Powder Cores MPP / High Flux / High Flux Prime / Sendust / Power Flux / Ultra Flux / Special Shape Core / SMD Metal Core 东部电子材料有限公司

www.dongbuem.com Powder Cores MPP / High Flux / High Flux Prime / Sendust / Power Flux / Ultra Flux / Special Shape Core / SMD Metal Core 东部电子材料有限公司

Introduction of our company. Since 1996, Dongbu has operated a powder production factory and a core production factory in Ansan, Korea. At the powder production factory, raw materials are weighed, melted and atomized to powders. The powders are pulverized to a desired particle distribution, heat-treated, and insulated. On the other hand, at the core production factory, the insulated powders are pressed to cores, stress-relieved, infiltrated and proceeded to the final coating and inspection. Through the factory operation we have set all the standard procedures up and it has led to the production of more consistent and more reliable products. We produce the magnetic core products of Moly-Permalloy Powder Cores (MPP), High Flux Powder Cores (HF), High Flux Prime Powder Cores (HF Prime), Ultra Flux Powder Cores (UF), Sendust Powder Cores (SDT), Power Flux Powder Cores (PF) which are made of metal alloy powders consisting of nickel, iron, aluminum, silicon, and molybdenum. Besides, new materials are possible at a customer s request. In addition to toroidal cores, special shape cores such as E cores, U cores, and Block cores are also available for the renewable energy market including the photovoltaic (PV) inverter market, and for the hybrid electric vehicle (HEV) and electric vehicle (EV) market. These products show the best performance in DC-superposition and core loss characteristics at high frequency and high current condition, which makes them quite suitable for a variety of power applications from simple chokes to sophisticated devices such as DC-DC converters and DC-AC inverters. It is our constant mission to try to meet customers needs in terms of quality, cost and delivery. In addition, we ll be the best, the only and the first in global magnetic powder core business by best practices based on six sigma methodology.

Contents General Information Application 6 Core Identification 7 -Name Code of Materials and Color of Toroidal Cores -Apparent Inductance in 1,000 turns Breakdown Voltage and Coating Materials 8 -Tolerance of Apparent Inductance -Unit Pack Quantity Core Dimension Table 9 Winding Data 10 Single Layer Winding Capacity 11 Wire Table 13 Technical Information Magnetic Design Formula 16 Conversion Table 18 Permeability vs. Frequency 20 Normal Magnetizing Curves 22 Permeability vs. AC Flux Density 24 Permeability vs. DC Bias Curves 26 Core Loss vs Temperature 29 Factors of Permeability vs. DC Bias Fit Formula, Factors of Percentage Permeability 30 Typical Core Loss of MPP 32 Typical Core Loss of High Flux 34 Typical Core Loss of High Flux Prime 36 Typical Core Loss of Ultra Flux 38 Typical Core Loss of Power Flux 40 Typical Core Loss of Sendust 42 Temperature Stability 44 Symbol and Units 46 Glossary of Terms 47 Dimension and Reference Table Standard MPC (Magnetic Powder Core) Toroidal Series Special Core Data Special Height UP/Down Core Series 106 Special Sendust 90μ Core Series 107 Dongbu Special Shape Core Data 108 EE Core series 109 EQ Core series 110 Block Core series 111 UU Core series 112 Cylinder Core series 113 CPI Core Data CDR Series 116 DR Series 117 T Series 118

1 General Information

Application MPP Cores Features High Resistivity Low Hysteresis and Eddy Current Loss Excellent Inductance Stability under High DC-Bias condition Excellent Temperature Stability Application Inductors for Q Low Loss Filter Circuits Loading Coils Transformers, Chokes and Inductors High Flux (Prime) Cores Features Excellent DC-Bias Characteristics High Bmax of 15,000 Gauss Compared to MPP or Ferrites Core Loss Significantly Lower than Iron Powder Cores Large Energy Storage Capacity In-line Noise Filters Application Switching Regulator Inductors Pulse Transformers, Fly-back Transformers, PFC Chokes Sendust Cores POWDER CORES Features Core Loss Lower than Iron Powder Cores Good DC-Bias Characteristics Low Core Loss / Good DC-Bias Power Flux Cores Application Switching Regulator Inductors In-line Noise Filters Pulse Transformers, Fly-back Transformers PFC Chokes Features Application Excellent DC-Bias Property Power choke for high current (over 50A) Good Temperature Stability Power inductor for energy storage (solar cell, wind energy) Core Loss Lower than Fe-Si Strip Cores Power output stage inductor Ultra Flux Cores Features Application Excellent Core Loss & DC-Bias characteristics Power choke for high current (over 50A) High Bmax of 14,000 Gauss Power inductor for energy storage (solar dell, wind energy.. etc) Excellent temperature stabillty Power inductor for miliatry & industries Basic Material Properties Core Material Permeability (μ) Flux Density(G) Perm. Vs. DC bias Core Loss Curie Temp. ( ) Temp. Stability Relative Cost MPP 26~160 7000 Better Lowest 450 Best High High Flux 26~160 15000 Best Low 500 Better Medium Sendust 26~125 10000 Good Medium 500 Good Low Power Flux 26~90 16000 Best Medium 500 Good Low Ultra Flux 26~125 14000 Best Medium 500 Good Medium 6 POWDER CORES

Core Identification Each alloy powder cores of Dongbu is coated with epoxy resin and marked with a part number. Sometimes, in the case of customer s special requirement, some cores are coated with parylene coating. A part number means core identification and it includes name code of materials, core outer diameter, apparent inductance code temperature stability code and inductance tolerance band code. Core identification for easy distinction is following as below. (example) MPC Toroidal Core Series M 106 157 A Temperature stability : inductance temperature stability Inductance : apparent inductance (mh) factor for 1,000 turns Size : outer diameter of core before coating (1/100Inch) Material : material code (M: MPP, H: High Flux, S: Sendust, W: Power Flux, U: Ultra Flux) Normally, name code of materials, outer diameter of bare core, apparent inductance in 1,000 turns and inductance temperature stability are stamped on the outside of the core. But, for customer order, tolerance band of apparent inductance is marked in packing label. Name Code of Materials and Color of Toroidal Cores General Information Brand Name Material Core Color Material Code MPP Fe-Ni-Mo alloy powder Grey M High Flux Fe-Ni alloy powder Khaki H Sendust Fe-Si-Al alloy powder Black S Power Flux Fe-Si alloy powder Bluish Green W Ultra Flux Ni-Fe-Si-Al powder Sky Blue U Apparent Inductance in 1000 turns Apparent inductance is value in mh/1000 turns. (AL value is the inductance(nh) per turn squared.) www.dongbuem.com 7

Breakdown Voltage and coating materials It means breakdown voltage of core and is as the below [Table 1] : [Table 1] Breakdown voltage Coating Material Guaranteed Breakdown Voltage UL Number Parylene coating 0.5kV (min.) - Epoxy coating 0.5kV (min.) UL94V-0 Tolerance of Apparent Inductance OD (1/100 inch) Tolerance POWDER CORES 014 ~ 015 018 ~ 038 040 ~ -15% ~ +15% -12% ~ +12% -8% ~ +8% 8 POWDER CORES

Core Dimension Table Window Area (cm 2 ) Cross Section Ae(cm 2 ) Magnetic Path Length (cm) Surface Area Ae(cm 2 ) After finish 40% winding factor Dimension(mm) OD(Max) x ID(Min) x HT(Max) Before Finish 40% winding factor 014 0.018 0.013 0.817 0.48 0.65 3.56 x 1.78 x 1.52 4.19 x 1.27 x 2.16 015 0.030 0.021 0.942 0.76 1.20 3.94 x 2.24 x 2.54 4.57 x 1.73 x 3.18 018 0.029 0.028 1.062 0.90 1.50 4.65 x 2.36 x 2.54 5.28 x 1.85 x 3.18 025 0.041 0.047 1.361 1.68 2.20 6.35 x 2.79 x 2.79 6.99 x 2.29 x 3.43 026 0.041 0.047 1.363 1.70 2.30 6.60 x 2.67 x 2.54 7.24 x 2.16 x 3.18 026 0.038 0.092 1.363 2.41 2.90 6.60 x 2.67 x 4.78 7.24 x 2.16 x 5.54 031 0.092 0.061 1.787 2.38 3.20 7.87 x 3.96 x 3.18 8.51 x 3.43 x 3.81 038 0.142 0.075 2.180 3.12 4.40 9.65 x 4.78 x 3.18 10.29 x 4.27 x 3.81 038 0.142 0.094 2.180 3.46 4.70 9.65 x 4.78 x 3.96 10.29 x 4.27 x 4.60 040 0.164 0.100 2.380 3.70 5.10 10.20 x 5.08 x 3.96 10.80 x 4.57 x 4.60 044 0.273 0.090 2.690 4.31 6.00 11.20 x 6.35 x 3.96 11.89 x 5.89 x 4.72 050 0.383 0.114 3.120 5.60 8.10 12.70 x 7.62 x 4.75 13.46 x 6.99 x 5.51 065 0.713 0.192 4.110 9.20 13.60 16.50 x 10.20 x 6.35 17.40 x 9.53 x 7.11 068 0.576 0.232 4.140 9.90 14.70 17.30 x 9.65 x 6.35 18.03 x 9.02 x 7.11 080 1.140 0.226 5.090 12.10 18.90 20.30 x 12.70 x 6.35 21.10 x 12.07 x 7.11 090 1.410 0.331 5.670 15.70 23.80 22.90 x 14.00 x 7.62 23.62 x 13.39 x 8.38 General Information 092 1.490 0.388 5.880 17.90 26.30 23.60 x 14.40 x 8.89 24.30 x 13.77 x 9.70 106 1.560 0.654 6.350 24.70 33.80 26.90 x 14.70 x 11.20 27.70 x 14.10 x 11.99 130 2.930 0.672 8.150 31.50 48.00 33.00 x 19.90 x 10.70 33.83 x 19.30 x 11.61 135 4.010 0.454 8.950 29.30 51.30 34.30 x 23.40 x 8.89 35.10 x 22.56 x 9.83 141 3.640 0.678 8.980 35.50 55.10 35.80 x 22.40 x 10.50 36.63 x 21.54 x 11.28 157 4.270 1.072 9.840 48.40 71.70 39.90 x 24.10 x 14.50 40.72 x 23.30 x 15.37 184 4.270 1.990 10.740 69.30 94.30 46.70 x 24.10 x 18.00 47.63 x 23.32 x 18.92 184 6.110 1.340 11.630 61.70 95.10 46.70 x 28.70 x 15.20 47.63 x 27.89 x 16.13 200 7.500 1.251 12.730 64.20 106.30 50.80 x 31.80 x 13.50 51.69 x 30.94 x 14.35 225 5.140 2.290 12.500 91.00 115.00 57.20 x 26.40 x 15.20 58.00 x 25.60 x 16.10 225 9.480 1.444 14.300 76.80 130.70 57.20 x 35.60 x 14.00 58.00 x 34.70 x 14.86 244 7.730 3.675 14.370 118.00 156.00 62.00 x 32.60 x 25.00 68.30 x 27.50 x 31.40 306 17.990 1.770 20.000 117.50 203.10 77.80 x 49.20 x 12.70 78.90 x 48.20 x 13.84 306 17.990 2.270 19.950 130.00 225.20 77.80 x 49.20 x 15.90 78.90 x 48.20 x 17.02 400 24.410 2.970 24.270 191.50 335.10 101.6 x 57.15 x 13.59 102.87 x 55.75 x 14.86 400 24.410 3.520 24.270 206.00 360.50 101.6 x 57.15 x 17.78 102.87 x 55.75 x 19.04 www.dongbuem.com 9

Winding Data POWDER CORES Core Size Window Area Wire Length / Turn Wound Dimension(unity) 100% (unity) 0% OD(max) HT(max) cm 2 Cir-Mils cm ft cm ft cm 014 0.02 3,600 0.70 0.023 0.59 0.020 0.50 0.20 0.27 0.11 015 0.03 6,080 1.05 0.034 0.89 0.029 0.58 0.23 0.48 0.19 018 0.03 5,780 1.14 0.038 0.99 0.032 0.67 0.26 0.49 0.20 025 0.04 8,100 1.35 0.044 1.16 0.038 0.88 0.35 0.54 0.21 026 0.04 8,100 1.33 0.044 1.13 0.037 0.19 0.36 0.51 0.20 026 0.04 7,570 1.75 0.058 1.62 0.053 0.92 0.36 0.74 0.29 031 0.09 18,200 1.60 0.052 1.27 0.042 1.10 0.43 0.67 0.27 038 0.14 28,200 1.79 0.059 1.37 0.045 1.34 0.53 0.74 0.29 038 0.14 28,200 1.93 0.063 1.52 0.050 1.34 0.53 0.82 0.32 040 0.16 32,400 1.99 0.065 1.54 0.050 1.41 0.55 0.85 0.33 044 0.27 53,800 2.20 0.072 1.55 0.051 1.57 0.62 0.90 0.35 050 0.38 75,600 2.49 0.082 1.75 0.057 1.82 0.72 1.15 0.45 065 0.71 140,600 3.22 0.106 2.20 0.072 2.37 0.93 1.52 0.60 068 0.58 126,000 3.67 0.120 2.33 0.076 2.49 0.98 1.63 0.64 080 1.14 225,600 3.67 0.120 2.33 0.076 2.92 1.15 1.74 0.68 090 1.41 277,700 4.29 0.141 2.70 0.089 3.26 1.28 1.98 0.78 092 1.49 293,800 4.49 0.147 3.00 0.098 3.35 1.32 2.14 0.84 106 1.56 308,000 5.23 0.171 3.76 0.123 3.73 1.47 2.40 0.94 130 2.93 577,600 5.93 0.194 3.78 0.124 4.67 1.84 2.80 1.10 135 4.01 788,500 5.87 0.192 3.23 0.106 5.01 1.97 2.90 1.14 141 3.64 719.100 6.22 0.204 3.78 0.124 5.11 2.01 2.96 1.17 157 4.27 842,700 7.38 0.242 4.81 0.158 5.64 2.22 3.52 1.39 184 4.27 842.700 8.66 0.284 6.22 0.204 6.38 2.51 3.87 1.53 184 6.11 1,206,000 8.34 0.273 5.20 0.171 6.63 2.61 3.98 1.57 200 7.50 1,484,000 8.51 0.279 4.95 0.162 7.24 2.85 4.06 1.60 225 5.14 1,014,000 9.02 0.296 6.46 0.212 7.57 2.98 3.40 1.34 225 9.48 1,871,000 9.33 0.306 5.30 0.074 8.13 3.20 4.44 1.75 225 7.73 1,525,535 13.31 0.437 8.73 0.277 6.98 2.75 3.28 1.29 306 17.99 3,550,000 10.40 0.340 5.90 0.193 11.20 4.40 5.43 2.14 306 17.99 3,550,000 11.00 0.361 6.52 0.124 11.30 4.45 5.77 2.27 400 24.41 4,818,025 13.21 0.433 7.68 0.252 15.20 5.98 5.53 2.18 400 24.41 4,818,025 14.24 0.467 8.27 0.271 15.20 5.98 6.15 2.42 in cm in A) Window Area = ID 2 2 B) Winding factor is the ratio of wire area to available window area 40% for toroids. 70~80% for rectangular windows C) 100% winding condition assumed 10 POWDER CORES

Single Layer Winding Capacity Core Size ID (mm) 014 015 018 025 026 026 031 038 040 044 050 065 068 080 1.27 1.73 1.85 2.29 2.16 2.16 3.45 4.27 4.57 5.89 6.99 9.53 9.02 12.07 Wire No. Wire Dia (mm) Turns / Single layer 8 3.34 9 2.98 10 2.67 10 11 2.38 12 12 2.13 14 13 1.90 12 11 16 14 1.71 14 13 18 15 1.53 16 15 21 16 1.37 10 12 18 17 24 17 1.22 11 14 21 19 27 18 1.09 13 16 24 22 31 19 0.98 10 10 15 19 27 25 35 20 0.88 12 13 17 21 30 29 39 21 0.78 13 15 20 24 34 32 45 22 0.70 12 15 17 23 28 39 37 50 23 0.57 13 18 19 26 31 44 41 56 24 0.56 15 20 22 29 35 49 46 63 25 0.46 18 23 25 33 40 56 52 71 26 0.45 12 12 12 20 26 28 37 45 63 59 80 27 0.36 12 11 14 13 13 23 29 31 42 50 70 66 89 28 0.36 13 13 16 16 16 26 33 36 47 56 78 74 100 29 0.29 11 15 15 18 17 17 29 37 40 52 63 87 82 30 0.29 13 17 17 21 20 20 33 42 45 59 71 98 92 31 0.25 14 20 19 23 22 22 37 47 50 66 79 32 0.24 16 22 22 26 25 25 41 52 56 73 87 33 0.18 18 25 24 30 28 28 46 58 63 82 98 34 0.19 21 29 28 34 33 33 53 67 72 93 112 35 0.14 24 33 32 38 37 37 60 75 81 36 0.15 28 37 36 44 42 42 67 84 37 0.14 31 41 40 48 46 46 73 38 0.12 35 43 45 54 52 52 39 0.11 40 53 52 62 60 60 40 0.10 46 61 59 71 68 68 General Information www.dongbuem.com 11

Single Layer Winding Capacity Core Size 090 092 106 130 135 141 157 184 184 200 225 225 244 306 400 POWDER CORES ID (mm) 13.39 13.77 14.10 19.30 22.60 21.50 23.30 23.32 27.90 30.94 25.60 34.7 31.37 48.2 55.75 Wire No. Wire Dia (mm) Turns / Single layer 8 3.34 15 18 17 18 18 23 25 20 29 26 41 47 9 2.98 11 11 17 20 19 21 21 26 29 23 33 38 47 54 10 2.67 12 13 13 19 23 22 24 24 29 33 26 37 33 53 63 11 2.38 14 15 15 22 26 25 27 27 33 37 30 42 38 60 72 12 2.13 16 17 17 25 30 28 31 31 37 42 34 48 43 67 81 13 1.90 18 19 20 28 34 32 35 35 42 47 39 54 48 76 91 14 1.71 21 22 22 32 38 36 39 39 47 53 43 60 54 84 103 15 1.53 24 25 25 36 43 41 44 44 54 60 49 68 61 95 117 16 1.37 27 28 29 41 48 46 50 50 60 67 55 76 68 106 132 17 1.22 31 32 33 46 54 52 56 56 68 76 62 85 77 119 147 18 1.09 35 36 37 52 61 58 63 63 76 85 70 96 87 134 167 19 0.98 39 40 42 58 69 65 71 71 86 95 78 108 97 150 187 20 0.88 44 46 47 65 77 73 80 80 96 107 88 120 108 268 210 21 0.78 50 51 53 74 87 82 90 90 108 120 99 135 123 188 239 22 0.70 56 58 60 83 98 93 101 101 121 135 111 152 137 211 268 23 0.57 63 65 66 92 109 103 112 112 135 150 124 169 169 235 24 0.56 71 73 75 103 122 116 126 126 152 168 138 189 172 263 25 0.46 80 82 84 26 0.45 89 92 94 27 0.36 99 102 105 28 0.36 111 29 0.29 30 0.29 31 0.25 32 0.24 33 0.18 34 0.19 35 0.14 36 0.15 37 0.14 38 0.12 39 0.11 40 0.10 12 POWDER CORES

Wire Table Wire Size Resistance Ohms/Foot Wire Area Current Capacity Amperes Circular Mils cm 2 (x10-3 ) (1) (2) 8 0.00063 18,000 91.2 22.0 44.0 9 0.00079 14,350 72.7 17.5 35.0 10 0.00100 11,500 58.2 13.8 27.6 11 0.00126 9,160 46.4 11.0 22.0 12 0.00159 7,310 37.0 8.71 17.4 13 0.00200 5,850 29.6 6.91 13.8 14 0.00252 4,680 23.7 5.48 10.9 15 0.00318 3,760 19.1 4.35 8.70 16 0.00402 3,000 15.2 3.44 6.88 17 0.00505 2,420 12.2 2.74 5.48 18 0.00639 1,940 9.83 2.17 4.34 19 0.00805 1,560 7.91 1.72 3.44 20 0.01013 1,250 6.34 1.37 2.74 21 0.0128 1,000 5.07 1.083 2.17 22 0.0162 810 4.11 0.853 1.71 23 0.0203 650 3.29 0.681 1.36 24 0.0257 525 2.66 0.539 1.08 25 0.0324 425 2.15 0.427 0.854 26 0.0410 340 1.72 0.337 0.674 27 0.0514 270 1.37 0.269 0.538 28 0.0653 220 1.11 0.212 0.424 29 0.0812 180 0.912 0.170 0.340 30 0.104 144 0.730 0.133 0.266 31 0.131 117 0.593 0.1056 0.211 32 0.162 96.0 0.487 0.0853 0.171 33 0.206 77.4 0.392 0.0672 0.134 34 0.261 60.8 0.308 0.0530 0.106 35 0.331 49.0 0.248 0.0418 0.0836 36 0.415 39.7 0.201 0.0333 0.0666 37 0.512 32.5 0.165 0.0270 0.0540 38 0.650 26.0 0.132 0.0213 0.0426 39 0.847 20.2 0.102 0.0163 0.0326 40 1.07 16.0 0.081 0.0128 0.0256 41 1.32 13.0 0.066 0.0105 0.0210 42 1.66 10.2 0.052 0.00833 0.0166 43 2.14 8.4 0.043 0.00645 0.0129 44 2.59 7.3 0.037 0.00533 0.0107 45 3.35 5.3 0.027 0.00412 0.00824 46 4.21 4.4 0.022 0.00330 0.00660 47 5.29 3.6 0.018 0.00259 0.00518 48 6.75 2.9 0.015 0.00533 0.00466 49 8.42 2.25 0.011 0.00200 0.00400 50 10.58 1.96 0.010 0.00130 0.00260 General Information Based on maximum diameter of heavy film magnet wire with insulation (1) Based on 750 cir mil/amperes. (2) Based on 375 cir mil/amperes. Current capacity will vary according to the core geometry and wire size, and can range from 375 to 1000 circular mils per ampere. www.dongbuem.com 13

2 Technical Information

Magnetic Design Formula The inductance of a core and the number of turns can be calculated by using the following formula. Inductance of Wourd Cores Where L = Inductance (μh) μ = core permeability N = number of turns A = core cross section area (cm 2 ) = mean magnetic path length (cm) LN = inductance for N turns (μh) AL = nominal inductance(nh/n 2 ) Example) M040066A POWDER CORES N = 10 turns (our standard wound turns for M040066A) A = 0.100cm 2 (please see the page 79 ) l = 2.380cm (please see the page 79 ) LN = 66 x 10 2 x 10-3 = 6.60(μH) The relations of Permeability-Flux Density(B)-Magnetizing Force(H) (Ampere s Law) (Faraday s Law) Where H = magnetizing force (Oersteds) N = number of turns I = peak magnetizing current (A) = mean magnetic path length (cm) Bmax = maximum flux density (Gauss) Erms = voltage across coil (V) A = core cross section area (cm 2 ) f = frequency (Hz) μ = material permeability Ampere s Law : The law is the magnetic equivalent of Gauss s law. It relates the circulating magnetic field in a closed loop to the electric current passing through the loop Faraday s Law : The law that defines the relationship of the voltage induced across the winding of a core to the flux density within the core 16 POWDER CORES

Inductance calculation by Permeability vs. DC bias curves Specification Core : M040066A Applied current : 3A 1) inductance Calculation at 0A N = 10 turns (our standard wound turns for M040066A) A = 0.100cm 2 (please see the page 79 ) = 2.380cm (please see the page 79 ) LN = 66 x 10 2 x 10-3 = 6.60(μH) 2) Magnetizing force (H : Oe) is calculated by Ampere law to achieve the roll off 3) When the magnetizing force(h) is 15.8 Oe, yielding 85% of initial permeability. Therefore, the Inductance at 3A is Technical Information L(3A) = 6.6 x 0.85 = 5.6(μH) Core Loss The total core losses are made up of three main components : Hysteresis, eddy current and residual losses. Eddy current loss Residual loss Hysteresis loss Total loss factor Where Rac = effective resistance (Ohm) a = hysteresis loss coefficient c = residual loss coefficient e = eddy current loss coefficient μ = same as before mentioned L = inductance Bmax = maximum flux density f = frequency www.dongbuem.com 17

Q Factor The Q factor is the ratio of reactance to the effective resistance and is often used as measure of performance. So, the Q factor represents the effect of electrical resistance. Where Q = quality factor ω = 2πf (Hz) L = inductance (H) Rdc = DC winding resistance (Ohm) Rac = resistance due to core losses (Ohm) Rd = resistance due to winding dielectric losses (Ohm) Physical Constant of Core POWDER CORES Le = effective mean magnetic path length (cm) Ae = effective core cross section area (cm 2 ) Ve = effective core volume (cm 3 ) OD = core outer diameter (cm) ID = core inner diamete (cm) HT = core height (cm) Conversion Table CGS (unit) By To obtain (unit) Factor Magnetic Flux Density (B) Gauss (G) 10-4 Tesla (T) 1T=10 4 G Magnetizing Force (H) Oersted (Oe) 79.58 Amperes per Meter (A/m) 1A/m=4π/10 3 Oe 18 POWDER CORES

Temperature Rising Calculation The increase in surface temperature of a component in free-standing air due to the total power dissipation (both copper and core loss). The following formula has been used to approximate temperature rise: Total Power Loss = Copper Loss + Core Loss Surface Area means in case of wound core Temperature Rising Calculation Nominal DC Resistance, in ohm/mh, at any given winding factor can be calculated by using the following equations: Where Ω/mhwf = Ω mh for chosen winding factor Ω/mhu = unity value, listed for each core size wf = chosen winding factor Kwf = length/turn for chosen wf * Ku = length/turn for unity(100%) wf * see winding Turn Length on core size pages Technical Information The value of Rdc for any given winding factor can be computed as follows: Where Rdcwf = Rdc for chosen winding factor Rdcu = unity value, listed for each core size(ohms) wf = chosen winding factor Kwf = length/turn for chosen wf* Ku = length/turn for unity(100%) wf* see winding Turn Length on core size pages www.dongbuem.com 19

Permeability vs. Frequency MPP Percent Permeability(%) 100 90 80 70 60 50 40 30 20 10 26μ 60μ 125 μ POWDER CORES 0 10 100 1000 10000 Frequency (khz) High Flux 100 Percent Permeability(%) 90 80 70 60 50 40 30 20 10 26μ 60μ 125 μ 0 10 100 1000 10000 Frequency (khz) 20 POWDER CORES

Power Flux 100 90 60μ 80 70 Percent Permeability(%) 60 50 40 30 20 10 0 10 100 1000 10000 Frequency (khz) Sendust Technical Information 100 98 26μ Percent Permeability(%) 96 94 92 90 88 86 40μ 60μ 75μ 90μ 125 μ 84 82 80 10 100 1000 10000 Frequency (khz) www.dongbuem.com 21

Normal Magnetizing Curves MPP 8000 7000 6000 125 μ 60μ 26μ Flux Density (Gauss) 5000 4000 3000 2000 1000 POWDER CORES 0 1 10 100 1000 Magnetizing Force (Oersteds) High Flux Flux Density (Gauss) 14000 13000 12000 11000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 1 10 100 1000 125 μ 60μ 26μ Magnetizing Force (Oersteds) 22 POWDER CORES

Power Flux 16000 14000 Flux Density (Gauss) Flux Density (Gauss) 12000 10000 8000 6000 4000 2000 0 Sendust 11000 10000 9000 8000 7000 6000 5000 4000 3000 10 100 1000 Magnetizing Force (Oersteds) 125 μ 60μ 90μ 75μ 60μ 26μ Technical Information 2000 1000 0 1 10 100 1000 Magnetizing Force (Oersteds) www.dongbuem.com 23

Permeability vs. AC Flux Density MPP 4 Percent Change of Permeability (%) 3 2 1 0 125 μ 60μ 26μ POWDER CORES -1 10 100 1000 10000 AC Flux Density (Gauss) High Flux 30 25 Percent Change of Permeability (%) 20 15 10 5 0-5 125 μ 60μ 26μ -10 10 100 1000 10000 AC Flux Density (Gauss) 24 POWDER CORES

Power Flux 4 Percent Change of Permeability (%) 3 2 1 0 60μ -1 10 100 1000 10000 AC Flux Density (Gauss) Sendust Technical Information 4 125 μ Percent Change of Permeability (%) 3 2 1 0 90μ 75μ 60μ 26μ -1 10 100 1000 10000 AC Flux Density (Gauss) www.dongbuem.com 25

Permeability vs. DC Bias Curves MPP 120 100 Percent Permeability (%) 80 60 40 125μ 60μ 26μ 20 POWDER CORES 0 1 10 100 1000 DC Mangnetizing Force (Oe) High Flux 120 100 Percent Permeability (%) 80 60 40 125μ 60μ 26μ 20 0 1 10 100 1000 DC Mangnetizing Force (Oe) 26 POWDER CORES

High Flux Prime 120 100 Percent Permeability (%) 80 60 40 125μ 60μ 26μ 20 0 1 10 100 1000 DC Mangnetizing Force (Oe) Ultra Flux Technical Information 120 100 Percent Permeability (%) 80 60 40 125μ 90μ 60μ 26μ 20 0 1 10 100 1000 DC Mangnetizing Force (Oe) www.dongbuem.com 27

Permeability vs. DC Bias Curves Power Flux 120 100 Percent Permeability (%) 80 60 40 60μ 50μ 40μ 26μ 20 POWDER CORES 0 11 0 100 1000 DC Mangnetizing Force (Oe) Sendust 120 100 Percent Permeability (%) 80 60 40 125μ 90μ 75μ 60μ 40μ 26μ 20 0 1 10 100 1000 DC Mangnetizing Force (Oe) 28 POWDER CORES

Core Loss vs Temperature 150.0 140.0 130.0 SDT Percent (%) 120.0 110.0 100.0 UF HF MPP PF 90.0 80.0-30 -10 10 30 50 70 90 110 130 Temperature ( ) Technical Information www.dongbuem.com 29

Factors of Permeability vs. DC Bias Fit Formula, Factors of Percentage Permeability % Permeability = 100 (1 + a x H b ) POWDER CORES MPP Permeability a b 26 1.74E-06 2.36 60 3.12E-06 2.65 125 1.78E-05 2.69 High Flux Permeability a b 26 2.81E-06 2.13 60 2.31E-06 2.49 125 1.45E-05 2.47 30 POWDER CORES

Ultra Flux Permeability a b 26 2.59E-05 1.79 60 1.88E-05 2.14 90 2.74E-05 2.23 125 1.14E-04 2.08 Power Flux Permeability a b 26 4.12E-06 1.99 50 8.55E-05 1.75 60 7.01E-05 1.85 75 1.75E-04 1.75 90 2.98E-04 1.74 Technical Information Sendust Permeability a b 26 1.67E-04 1.66 60 3.59E-04 1.78 75 5.93E-04 1.77 90 1.45E-03 1.65 125 1.99E-03 1.69 www.dongbuem.com 31

Typical Core Loss of MPP 10000 MPP 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 0.70 1.48 2.06 32 POWDER CORES

10000 MPP 60μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) MPP 125μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 60 0.68 1.51 2.13 125 0.44 1.58 2.09 www.dongbuem.com 33

Typical Core Loss of High Flux 10000 HIgh Flux 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 1.44 1.39 2.37 34 POWDER CORES

10000 HIgh Flux 60μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) HIgh Flux 125μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 60 0.91 1.44 2.25 125 0.77 1.50 2.35 www.dongbuem.com 35

Typical Core Loss of High Flux Prime 10000 High Flux Prime 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 1.61 1.31 2.24 36 POWDER CORES

10000 High Flux Prime 60μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) High Flux Prime 125μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 60 0.92 1.37 2.25 125 0.80 1.48 2.27 www.dongbuem.com 37

Typical Core Loss of Ultra Flux 10000 Ultra Flux 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES P L =4.51F 1.25 B 2.21 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 1.14 1.38 2.23 38 POWDER CORES

10000 Ultra Flux 60μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 P L =4.51F 1.25 B 2.21 0.1 10 100 1000 10000 Flux Density (Gauss) Ultra Flux 90μ, 125μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 60 1.54 1.34 2.19 90 1.03 1.42 2.28 www.dongbuem.com 39

Typical Core Loss of Power Flux 10000 Power Flux 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES 0.1 10 100 1000 10000 Flux Density (Gauss) Power Flux 40μ 10000 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 3.69 1.25 2.16 40 5.90 1.21 2.16 40 POWDER CORES

10000 Power Flux 50μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Power Flux 60μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 P L =2.00F 1.31 B 2.15 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 50 4.35 1.25 2.22 60 3.96 1.25 2.19 www.dongbuem.com 41

Typical Core Loss of Sendust 10000 Sendust 26μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 POWDER CORES 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 26 3.58 1.19 2.13 42 POWDER CORES

10000 Sendust 40μ 1000 Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Sendust 60,75,90,125μ 10000 1000 Technical Information Core Loss (mw/cm 3 ) 100 10 200KHz 100KHz 50KHz 25KHz 1 0.1 10 100 1000 10000 Flux Density (Gauss) Perm. C a b 40 2.15 1.28 2.15 125 2.38 1.24 2.30 www.dongbuem.com 43

Temperature Stability MPP 3.0 Percent Permeability (%) 2.0 1.0 0.0 125 μ 60μ 26μ -1.0 POWDER CORES -2.0-30 -20-10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 High Flux Temperature ( ) 5.0 4.0 Percent Permeability (%) 3.0 2.0 1.0 0.0-0.1-0.2 125 μ 60μ 26μ -0.3-0.4-0.5-30 -20-10 0 1 0 20 3 0 40 50 60 70 80 90 100 110 120 130 Temperature ( ) 44 POWDER CORES

Power Flux 5.0 4.0 3.0 Percent Permeability (%) 2.0 1.0 0.0-0.1-0.2 60μ -0.3-0.4-0.5-30 -20-10 0 10 20 30 40 50 60 70 80 9 0 100 110 120 130 Temperature ( ) Sendust Technical Information 2.0 1.0 0.0 Percent Permeability (%) -1.0-2.0-3.0-4.0 26μ 60μ 75μ 90μ -5.0 125 μ -6.0-7.0-30 -20-10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Temperature ( ) www.dongbuem.com 45

Symbol and Units Symbol Discription Unit Ae effective cross section area of a core cm 2 AL apparent inductance nh/n 2 B magnetic flux density T Br remanence flux density T Bmax maximum flux density T Erms sinusoidal rms voltage across winding V H magnetizing force A/m POWDER CORES Hc coercive force A/m Hmax maximum magnetizing force A/m le effective magnetic path length cm L inductance H N number of turns - PL core loss of a core mw/cm 3 Q quality factor - V volume of a core cm 3 Rdc DC winding resistance Ω μ absolute permeability - μe effective permeability - μi initial permeability - μr relative permeability - 46 POWDER CORES

Glossary of Terms AC flux density Number of flux lines per unit of cross-sectional area generated by an alternating magnetic field; Gauss Air Gap A non-magnetic discontinuity in a ferro-magnetic circuit. For example, the space between the poles of a magnet, although filled with brass of wood and other non-magnetic material, is nevertheless called an air gap. Core Losses Core losses are caused by an altering magnetic field in the core material. The losses are a function of the operating frequency and the total magnetic flux swing. The total core losses are made up of three main components: Hysteresis, eddy current and residual losses. These losses vary considerably from one magnetic material to another. Applications such as higher power and higher frequency switching regulators require careful core selection to yield the highest inductor performance by keeping the core losses to a minimum. Breakdown Voltage (1)The voltage at which an insulator or dielectric ruptures, or at which ionization and conduction take place in a gas or vapor. (2) The reverse voltage at which ava l a n che b reakdown occu rs i n a semiconductor. (3) Maximum AC or DC voltage that can be applied from the input to output (or chassis) of a converter without causing damage. Core Saturation The DC bias current flowing through an inductor which causes the inductance to drop by a specified amount from the initial zero DC bias inductance value. Common spec i f ied induc tance drop percentages include 10% for ferrite cores and 20% for iron powder cores in energy storage applications. Also referred to as saturation current. Technical Information Choke An inductor which is intended to filter, or 'choke', out unwanted signals. Copper Loss The power loss by current flowing through the winding. The power loss is equal to the square of the current multiplied by the resistance of the wire (i2xr). This power loss is transferred into heat. Core Losses The temperature at which a magnetic material loses its magnetic properties. The core's permeability typical ly increases dramat ical ly as the core temperature approaches the curie temperature, which causes the inductance to increase. The permeability drops to near unity at the curie temperature, which causes the inductance to drop dramatically. The curie point is the temperature at which the initial permeability (µi) has dropped to 10% of its value at room temperature. www.dongbuem.com 47

Glossary of Terms DC Bias Eddy Current Losses POWDER CORES Direct current (DC) applied to the winding of a core in addition to any time-varying current. Inductance with DC bias is a common specification for powder cores. The inductance will 'roll off' gradually and predictably with increasing DC bias. DCR Direct Current Resistance - The resistance of the inductor winding measured with no alternating current. The DCR is most often minimized in the design of an inductor. The unit of measure is ohms and it is usually specified as a maximum rating Distributed Capacitance (1) In the construction of an inductor, each turn of wire or conductor acts as a capacitor plate. The combined effects of each turn can be presented as a single capacitance known as the distributed capacitance. The capacitance is in parallel with the inductor. This parallel combination will resonate at some frequency, which is called the self-resonant frequency (SRF). Lower distributed capacitance for a given inductance will result in a higher SRF and vice versa. (2) Capacitance that is not concentrated within a lumped capacitor, but spread over a circuit or group of components. Core losses associated with the electrical resistivity of the magnetic material and induced voltages within the material. Eddy currents are inversely proportional to material resistivity and proportional to the rate of change of flux density. Eddy current losses are present in both the magnetic core and windings of an inductor. Eddy currents in the winding, or conductor, contribute to two main types of losses: losses due to proximity effects and skin effects. As for the core losses, an electric field around the flux lines in the magnetic field is generated by alternating magnetic flux. This will result in eddy currents if the magnetic core material has electrical conductivity. Losses result from this phenomenon since the eddy currents flow in a plane that is perpendicular to the magnetic flux lines. Eddy current and hysteresis losses are the two major core loss factors. Eddy current loss becomes dominant in powder cores as the frequency increases. Effective Permeability For a magnetic circuit constructed with an air gap, or gaps, the permeability of a hypothetical homogeneous material that would provide the same reluctance, or net permeability. EMC Electromagnetic compatibility. The ability of an elect ronic device to operate in i ts intended environment without its performance being affected by EMI and without generating EMI that will affect other equipment. EMI Electro-Magnetic Interference - An unwanted electrical energy in any form. EMI is often used interchangeably with 'noise' and 'interference'. 48 POWDER CORES

Flux Density (B) The corresponding parameter for the induced magnetic field in an area perpendicular to the flux path. Flux density is determined by the field strength and permeability of the medium in which it is measured. Hysteresis Loop A closed curve obtained for a material by plotting corresponding values of flux density for the ordinate and magnetizing force for the abscissa when the material is passing through a complete cycle between definite limits of either magnetizing force or flux density. If the material is not driven into saturation it is said to be on a minor loop. Full Winding A winding for toroidal cores that will result in 45% of the core's inside diameter remaining. Remanence Flux Density Maximum Permeability Maximum Flux Density Intial Permeability Harmonics Energy at integral multiples of the frequency of the fundamental signal. Normally expressed as THD (Total Harmonic Distortion) but can be specified for harmonics of interest in either a percentage of or decibels below the power level of the fundamental frequency signal. Coercive Force Magnetizing Force Technical Information Hysteresis Loss Hysteresis means to lag behind. This is the tendency of a magnetic material to retain its magnetization. Hysteresis causes the graph of magnetic flux density versus magnetizing force (B-H curve) to form a loop rather than a line. The area of the loop represents the difference between energy stored and energy released per unit of volume of material per cycle. This difference is called the hysteresis loss. High Q filters A filter circuit (inductor and/or capacitor) that exhibits high Q. It is very frequency-sensitive and filters out or allows to pass, only those frequencies within a narrow band. www.dongbuem.com 49

Glossary of Terms Impedance The total opposition offered by a component or circuit to the flow of alternating or varying current at a particular frequency, including both the AC and DC component.. Impedance is expressed in ohms and is similar to the actual resistance in a direct current circuit. In computations, impedance is handled as a complex ratio of voltage to current. The ohm is the unit of impedance. Impedance i s t ypi cally abbreviated as "z" or "Z". The frequency-invariant, real component of impedance is resistance. The f requency-var iant, imaginary component of impedance is reactance. The reciprocal of impedance is admittance. Magnetostriction The expansion and contraction of a magnetic material with changing magnetic flux density. The saturation magnetostriction coefficient has the symbols. It is change of length divided by original length (a dimensionless number) and is measured at the saturation flux density. Magnetostriction causes audible noise if the magnetostriction is sufficiently large and the applied field is AC and in the audible frequency range, e.g. 50 or 60 Hz. Mean Length Turn The average length of a single turn in the winding of the device. POWDER CORES Inductance Factor (AL) The inductance rating of a core in nanohenries per turn squared (nh/n2) based on a peak flux density of 10 gauss (1 mt) at a frequency of 10 khz. An AL value of 40 would produce 400µH of inductance for 100 turns and 40mH for 1000 turns. Oersted The unit of magnetizing force in cgs units. One Oersted equals a magneto-motive force of one Gilbert per centimeter of path length. 1 Oersted = 79.58 A/m= 0.7958 A/cm Initial Permeability That value of permeability at a peak AC flux density of 10 gauss (1 mt). Percent Permeability (%) Represents the percent change in permeability from the initial value. Magnetic Energy The product of the flux density (B) and the (de) magnetizing force (H) in a magnetic circuit required to reach that flux density. Q factor The Q factor or quality factor is a measure of the "quality" of a resonant system. Resonant systems respond to frequencies close to their natural frequency much more strongly than they respond to other frequencies. The Q factor indicates the amount of resistance to resonance in a system. Systems with a high Q factor resonate with a greater amplitude (at the resonant frequency) than systems with a low Q factor. Damping decreases the Q factor. 50 POWDER CORES

Search Coil A coil inductor, usually of known area and number of turns, that is used with a fluxmeter to measure the change of flux linkage with the coil. Single-Layer Winding Swing A term used to describe how inductance responds to changes in cur rent. Example: A 2:1 swing corresponds to an inductor which exhibits 2 times more inductance at very low current than it does at its maximum rated current. This would also correspond to the core operating at 50% of initial permeability (also 50% saturation) at maximum current. A winding for a toroidal core which will result in the full utilization of the inside circumference of the core without the overlapping of turns. The thickness of insulation and tightness of winding will affect results. Surface Area The effective surface area of a typical wound core available to dissipate heat. Skin Effect Skin effect is the tendency for alternating current to flow near the surface of the conductor in lieu of flowing in a manner as to utilize the entire crosssectional area of tile conductor. The phenomenon causes the resistance of the conductor to increase. The magnetic field associated with the current in the conductor causes eddy currents near the center of the conductor which opposes the flow of the main current flow near the center of the conductor. The main current flow is forced further to the surface as the frequency of the alternating current increasing Switch Mode Power Supply A power conversion technique that involves breaking the input power into pulses at a high frequency by switching it on and off and re-combining these pulses at the output stage. Using this technique, an unregulated input voltage can be converted to one or more regulated output voltages at relatively high efficiencies. Switching Frequency The rate at which the DC input to a switching regulator is switched on and off. Technical Information Stored Energy The amount of energy stored, in microjoules (10-6 joules), is the product of one-half the inductance (L) in microhenries (10-6 Henries), times the current (I) squared in amperes. Temperature rise Change in temperature of a terminal from a no-load condition to full-current load. Also called T rise. (2) The increase in surface temperature of a component in air due to the power dissipation in the component. The power dissipation for an inductor includes both copper and core losses. www.dongbuem.com 51

Glossary of Terms Temperature Coefficient A factor which describes the reversible change in a magnetic property with a change in temperature. The magnetic property spontaneously returns when the emperature is cycled to its original point. It usually is expressed as the percentage change per unit of temperature. Temperature Stabilization After manufacture, many types of soft and hard magnetic materials can be thermally cycled to make them less sensitive to subsequent temperature extremes. POWDER CORES Winding Factor The ratio of the total area of copper wire inside the center hole of a toroid to the window area of the toroid. Window Area The area in and around a magnetic core which can be used for the placement of windings. 52 POWDER CORES

Technical Information www.dongbuem.com 53

3Dimension and Reference Table

MPP Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm M014013A MP-014060-8 N/A CM035060 0.140 3.56 0.070 1.78 0.060 1.52 60 M014026A MP-014125-8 55140 CM035125 0.140 3.56 0.070 1.78 0.060 1.52 125 M015007A MP-015026-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 26 M015017A MP-015060-8 N/A CM039060 0.155 3.94 0.088 2.24 0.100 2.54 60 M015035A MP-015125-8 55150 CM039125 0.155 3.94 0.088 2.24 0.100 2.54 125 M018009A MP-018026-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 26 M018020A MP-018060-8 55181 CM046060 0.183 4.65 0.093 2.36 0.100 2.54 60 M018042A MP-018125-8 55180 CM046125 0.183 4.65 0.093 2.36 0.100 2.54 125 M025010A MP-025026-8 55022 N/A 0.250 6.35 0.110 2.79 0.110 2.79 26 M025024A MP-025060-8 55021 CM063060 0.250 6.35 0.110 2.79 0.110 2.79 60 M025050A MP-025125-8 55020 CM063125 0.250 6.35 0.110 2.79 0.110 2.79 125 M026011A MP-027026-8 55242 CM066026 0.260 6.60 0.105 2.67 0.100 2.54 26 M026026A MP-027060-8 55241 CM066060 0.260 6.60 0.105 2.67 0.100 2.54 60 M026054A MP-027125-8 55240 CM066125 0.260 6.60 0.105 2.67 0.100 2.54 125 M026021A MP-026026-8 55272 CM067026 0.260 6.60 0.105 2.67 0.188 4.78 26 M026050A MP-026060-8 55271 CM067060 0.260 6.60 0.105 2.67 0.188 4.78 60 M026103A MP-026125-8 55270 CM067125 0.260 6.60 0.105 2.67 0.188 4.78 125 M031011A MP-031026-8 55032 CM078026 0.310 7.87 0.156 3.96 0.125 3.18 26 M031025A MP-031060-8 55031 CM078060 0.310 7.87 0.156 3.96 0.125 3.18 60 M031052A MP-031125-8 55030 CM078125 0.310 7.87 0.156 3.96 0.125 3.18 125 M038011A MP-039026-8 55282 CM096026 0.380 9.65 0.188 4.78 0.125 3.18 26 M038025A MP-039060-8 55281 CM096060 0.380 9.65 0.188 4.78 0.125 3.18 60 M038053A MP-039125-8 55280 CM096125 0.380 9.65 0.188 4.78 0.125 3.18 125 M038014A MP-038026-8 55292 CM097026 0.380 9.65 0.188 4.78 0.156 3.96 26 M038032A MP-038060-8 55291 CM097060 0.380 9.65 0.188 4.78 0.156 3.96 60 M038066A MP-038125-8 55290 CM097125 0.380 9.65 0.188 4.78 0.156 3.96 125 M040014A MP-040026-2 55042 CM102026 0.400 10.16 0.200 5.08 0.156 3.96 26 M040032A MP-040060-2 55041 CM102060 0.400 10.16 0.200 5.08 0.156 3.96 60 M040066A MP-040125-2 55040 CM102125 0.400 10.16 0.200 5.08 0.156 3.96 125 M044011A MP-044026-2 55132 CM112026 0.440 11.18 0.250 6.35 0.156 3.96 26 M044026A MP-044060-2 55131 CM112060 0.440 11.18 0.250 6.35 0.156 3.96 60 M044053A MP-044125-2 55130 CM112125 0.440 11.18 0.250 6.35 0.156 3.96 125 M050012A MP-050026-2 55052 CM127026 0.500 12.70 0.300 7.62 0.187 4.75 26 M050027A MP-050060-2 55051 CM127060 0.500 12.70 0.300 7.62 0.187 4.75 60 M050056A MP-050125-2 55050 CM127125 0.500 12.70 0.300 7.62 0.187 4.75 125 M065015A MP-065026-2 55122 CM166026 0.650 16.51 0.400 10.16 0.250 6.35 26 M065035A MP-065060-2 55121 CM166060 0.650 16.51 0.400 10.16 0.250 6.35 60 M065072A MP-065125-2 55120 CM166125 0.650 16.51 0.400 10.16 0.250 6.35 125 M068019A MP-068026-2 55382 CM172026 0.680 17.27 0.380 9.65 0.250 6.35 26 M068043A MP-068060-2 55381 CM172060 0.680 17.27 0.380 9.65 0.250 6.35 60 M068089A MP-068125-2 55380 CM172125 0.680 17.27 0.380 9.65 0.250 6.35 125 M080014A MP-080026-2 55208 CM203026 0.800 20.32 0.500 12.70 0.250 6.35 26 M080032A MP-080060-2 55848 CM203060 0.800 20.32 0.500 12.70 0.250 6.35 60 M080068A MP-080125-2 55206 CM203125 0.800 20.32 0.500 12.70 0.250 6.35 125 M090019A MP-090026-2 55312 CM229026 0.900 22.86 0.550 13.97 0.300 7.62 26 M090043A MP-090060-2 55059 CM229060 0.900 22.86 0.550 13.97 0.300 7.62 60 M090090A MP-090125-2 55310 CM229125 0.900 22.86 0.550 13.97 0.300 7.62 125 M092022A MP-092026-2 55352 CM234026 0.920 23.60 0.567 14.40 0.350 8.89 26 56 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm M092051A MP-092060-2 55351 CM234060 0.920 23.60 0.567 14.40 0.350 8.89 60 M092105A MP-092125-2 55350 CM234125 0.920 23.60 0.567 14.40 0.350 8.89 125 M106032A MP-106026-2 55932 CM270026 1.060 26.92 0.580 14.73 0.440 11.18 26 M106075A MP-106060-2 55894 CM270060 1.060 26.92 0.580 14.73 0.440 11.18 60 M106157A MP-106125-2 55930 CM270125 1.060 26.92 0.580 14.73 0.440 11.18 125 M130028A MP-130026-2 55550 CM330026 1.300 33.02 0.785 19.94 0.420 10.67 26 M130061A MP-130060-2 55071 CM330060 1.300 33.02 0.785 19.94 0.420 10.67 60 M130127A MP-130125-2 55548 CM330125 1.300 33.02 0.785 19.94 0.420 10.67 125 M135016A MP-135026-2 55587 CM343026 1.350 34.29 0.580 14.73 0.440 11.18 26 M135038A MP-135060-2 55586 CM343060 1.350 34.29 0.580 14.73 0.440 11.18 60 M135079A MP-135125-2 55585 CM343125 1.350 34.29 0.580 14.73 0.440 11.18 125 M141024A MP-141026-2 55326 CM358026 1.410 35.81 0.880 22.35 0.412 10.46 26 M141056A MP-141060-2 55076 CM358060 1.410 35.81 0.880 22.35 0.412 10.46 60 M141127A MP-141125-2 55324 CM358125 1.410 35.81 0.880 22.35 0.412 10.46 125 M157035A MP-157026-2 55256 CM400026 1.570 39.38 0.950 24.13 0.570 14.48 26 M157081A MP-157060-2 55083 CM400060 1.570 39.38 0.950 24.13 0.570 14.48 60 M157168A MP-157125-2 55254 CM400125 1.570 39.38 0.950 24.13 0.570 14.48 125 M184059A MP-184026-2 55440 CM467026 1.840 46.72 0.950 24.13 0.710 18.03 26 M184135A MP-184060-2 55439 CM467060 1.840 46.72 0.950 24.13 0.710 18.03 60 M184281A MP-184125-2 55438 CM467125 1.840 46.72 0.950 24.13 0.710 18.03 125 M184037A MP-185026-2 55091 CM468026 1.840 46.72 1.130 28.70 0.600 15.24 26 M184086A MP-185060-2 55090 CM468060 1.840 46.72 1.130 28.70 0.600 15.24 60 M184178A MP-185125-2 55089 CM468125 1.840 46.72 1.130 28.70 0.600 15.24 125 M200032A MP-200026-2 55717 CM508026 2.000 50.80 1.250 31.75 0.530 13.46 26 M200073A MP-200060-2 55716 CM508060 2.000 50.80 1.250 31.75 0.530 13.46 60 M200152A MP-200125-2 55715 CM508125 2.000 50.80 1.250 31.75 0.530 13.46 125 M225060A MP-226026-2 55191 CM571026 2.250 57.15 1.039 26.39 0.600 15.24 26 M225138A MP-226060-2 55192 CM571060 2.250 57.15 1.039 26.39 0.600 15.24 60 M225287A MP-226125-2 55195 CM571125 2.250 57.15 1.039 26.39 0.600 15.24 125 M225033A MP-225026-2 55111 CM572026 2.250 57.15 1.400 35.56 0.550 13.97 26 M225075A MP-225060-2 55110 CM572060 2.250 57.15 1.400 35.56 0.550 13.97 60 M225156A MP-225125-2 55109 CM572125 2.250 57.15 1.400 35.56 0.550 13.97 125 M244084A N/A 55615 CM610026 2.441 62.00 1.283 32.60 0.984 25.00 26 M244193A N/A 55617 CM610060 2.441 62.00 1.283 32.60 0.984 25.00 60 M244402A N/A 55620 CM610125 2.441 62.00 1.283 32.60 0.984 25.00 125 M306030A MP-300026-2 55868 CM777026 3.063 77.80 1.938 49.23 0.500 12.70 26 M306068A MP-300060-2 55867 CM777060 3.063 77.80 1.938 49.23 0.500 12.70 60 M306142A MP-300125-2 55866 CM777125 3.063 77.80 1.938 49.23 0.500 12.70 125 M306037A MP-301026-2 55908 CM778026 3.063 77.80 1.938 49.23 0.625 15.88 26 M306085A MP-301060-2 55907 CM778060 3.063 77.80 1.938 49.23 0.625 15.88 60 M306178A MP-301125-2 55906 CM778125 3.063 77.80 1.938 49.23 0.625 15.88 125 M400021A MP-401026-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 14 M400040A MP-401060-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 26 M400092A MP-401125-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 60 M400025A MP-400026-2 55102 CM1016026 4.000 102.10 2.236 56.80 0.660 16.78 14 M400047A MP-400060-2 55099 CM1016060 4.000 102.10 2.236 56.80 0.660 16.78 26 M400112A MP-400125-2 55098 CM1016125 4.000 102.10 2.236 56.80 0.660 16.78 60 Dimension and Reference Table www.dongbuem.com 57

High Flux Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm H014013A HF-014060-8 N/A CH035060 0.140 3.56 0.070 1.78 0.060 1.52 60 H014026A HF-014125-8 N/A CH035125 0.140 3.56 0.070 1.78 0.060 1.52 125 H015007A HF-015026-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 26 H015017A HF-015060-8 N/A CH039060 0.155 3.94 0.088 2.24 0.100 2.54 60 H015035A HF-015125-8 N/A CH039125 0.155 3.94 0.088 2.24 0.100 2.54 125 H018009A HF-018026-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 26 H018020A HF-018060-8 N/A CH046060 0.183 4.65 0.093 2.36 0.100 2.54 60 H018042A HF-018125-8 N/A CH046125 0.183 4.65 0.093 2.36 0.100 2.54 125 H025010A HF-025026-8 58022 N/A 0.250 6.35 0.110 2.79 0.110 2.79 26 H025024A HF-025060-8 58021 CH063060 0.250 6.35 0.110 2.79 0.110 2.79 60 H025050A HF-025125-8 58020 CH063125 0.250 6.35 0.110 2.79 0.110 2.79 125 H026011A HF-027026-8 58242 CH066026 0.260 6.60 0.105 2.67 0.100 2.54 26 H026026A HF-027060-8 58241 CH066060 0.260 6.60 0.105 2.67 0.100 2.54 60 H026054A HF-027125-8 58240 CH066125 0.260 6.60 0.105 2.67 0.100 2.54 125 H026021A HF-026026-8 58272 CH067026 0.260 6.60 0.105 2.67 0.188 4.78 26 H026050A HF-026060-8 58271 CH067060 0.260 6.60 0.105 2.67 0.188 4.78 60 H026103A HF-026125-8 58270 CH067125 0.260 6.60 0.105 2.67 0.188 4.78 125 H031011A HF-031026-8 58032 CH078026 0.310 7.87 0.156 3.96 0.125 3.18 26 H031025A HF-031060-8 58031 CH078060 0.310 7.87 0.156 3.96 0.125 3.18 60 H031052A HF-031125-8 58030 CH078125 0.310 7.87 0.156 3.96 0.125 3.18 125 H038011A HF-039026-8 58282 CH096026 0.380 9.65 0.188 4.78 0.125 3.18 26 H038025A HF-039060-8 58281 CH096060 0.380 9.65 0.188 4.78 0.125 3.18 60 H038053A HF-039125-8 58280 CH096125 0.380 9.65 0.188 4.78 0.125 3.18 125 H038014A HF-038026-8 58292 CH097026 0.380 9.65 0.188 4.78 0.156 3.96 26 H038032A HF-038060-8 58291 CH097060 0.380 9.65 0.188 4.78 0.156 3.96 60 H038066A HF-038125-8 58290 CH097125 0.380 9.65 0.188 4.78 0.156 3.96 125 H040014A HF-040026-2 58042 CH102026 0.400 10.16 0.200 5.08 0.156 3.96 26 H040032A HF-040060-2 58041 CH102060 0.400 10.16 0.200 5.08 0.156 3.96 60 H040066A HF-040125-2 58040 CH102125 0.400 10.16 0.200 5.08 0.156 3.96 125 H044011A HF-044026-2 58132 CH112026 0.440 11.18 0.250 6.35 0.156 3.96 26 H044026A HF-044060-2 58131 CH112060 0.440 11.18 0.250 6.35 0.156 3.96 60 H044053A HF-044125-2 58130 CH112125 0.440 11.18 0.250 6.35 0.156 3.96 125 H050012A HF-050026-2 58052 CH127026 0.500 12.70 0.300 7.62 0.187 4.75 26 H050027A HF-050060-2 58051 CH127060 0.500 12.70 0.300 7.62 0.187 4.75 60 H050056A HF-050125-2 58050 CH127125 0.500 12.70 0.300 7.62 0.187 4.75 125 H065015A HF-065026-2 58122 CH166026 0.650 16.51 0.400 10.16 0.250 6.35 26 H065035A HF-065060-2 58121 CH166060 0.650 16.51 0.400 10.16 0.250 6.35 60 H065072A HF-065125-2 58120 CH166125 0.650 16.51 0.400 10.16 0.250 6.35 125 H068019A HF-068026-2 58382 CH172026 0.680 17.27 0.380 9.65 0.250 6.35 26 H068043A HF-068060-2 58381 CH172060 0.680 17.27 0.380 9.65 0.250 6.35 60 H068089A HF-068125-2 58380 CH172125 0.680 17.27 0.380 9.65 0.250 6.35 125 H080014A HF-080026-2 58208 CH203026 0.800 20.32 0.500 12.70 0.250 6.35 26 H080032A HF-080060-2 58848 CH203060 0.800 20.32 0.500 12.70 0.250 6.35 60 H080068A HF-080125-2 58206 CH203125 0.800 20.32 0.500 12.70 0.250 6.35 125 H090019A HF-090026-2 58312 CH229026 0.900 22.86 0.550 13.97 0.300 7.62 26 H090043A HF-090060-2 58059 CH229060 0.900 22.86 0.550 13.97 0.300 7.62 60 H090090A HF-090125-2 58310 CH229125 0.900 22.86 0.550 13.97 0.300 7.62 125 H092022A HF-092026-2 58352 CH234026 0.920 23.60 0.567 14.40 0.350 8.89 26 58 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm H092051A HF-092060-2 58351 CH234060 0.920 23.60 0.567 14.40 0.350 8.89 60 H092105A HF-092125-2 58350 CH234125 0.920 23.60 0.567 14.40 0.350 8.89 125 H106032A HF-106026-2 58932 CH270026 1.060 26.92 0.580 14.73 0.440 11.18 26 H106075A HF-106060-2 58894 CH270060 1.060 26.92 0.580 14.73 0.440 11.18 60 H106157A HF-106125-2 58930 CH270125 1.060 26.92 0.580 14.73 0.440 11.18 125 H130028A HF-130026-2 58550 CH330026 1.300 33.02 0.785 19.94 0.420 10.67 26 H130061A HF-130060-2 58071 CH330060 1.300 33.02 0.785 19.94 0.420 10.67 60 H130127A HF-130125-2 58548 CH330125 1.300 33.02 0.785 19.94 0.420 10.67 125 H135016A HF-135026-2 58587 CH343026 1.350 34.29 0.580 14.73 0.440 11.18 26 H135038A HF-135060-2 58586 CH343060 1.350 34.29 0.580 14.73 0.440 11.18 60 H135079A HF-135125-2 58585 CH343125 1.350 34.29 0.580 14.73 0.440 11.18 125 H141024A HF-141026-2 58326 CH358026 1.410 35.81 0.880 22.35 0.412 10.46 26 H141056A HF-141060-2 58076 CH358060 1.410 35.81 0.880 22.35 0.412 10.46 60 H141127A HF-141125-2 58324 CH358125 1.410 35.81 0.880 22.35 0.412 10.46 125 H157035A HF-157026-2 58256 CH400026 1.570 39.38 0.950 24.13 0.570 14.48 26 H157081A HF-157060-2 58083 CH400060 1.570 39.38 0.950 24.13 0.570 14.48 60 H157168A HF-157125-2 58254 CH400125 1.570 39.38 0.950 24.13 0.570 14.48 125 H184059A HF-184026-2 58440 CH467026 1.840 46.72 0.950 24.13 0.710 18.03 26 H184135A HF-184060-2 58439 CH467060 1.840 46.72 0.950 24.13 0.710 18.03 60 H184281A HF-184125-2 58438 CH467125 1.840 46.72 0.950 24.13 0.710 18.03 125 H184037A HF-185026-2 58091 CH468026 1.840 46.72 1.130 28.70 0.600 15.24 26 H184086A HF-185060-2 58090 CH468060 1.840 46.72 1.130 28.70 0.600 15.24 60 H184178A HF-185125-2 58089 CH468125 1.840 46.72 1.130 28.70 0.600 15.24 125 H200032A HF-200026-2 58717 CH508026 2.000 50.80 1.250 31.75 0.530 13.46 26 H200073A HF-200060-2 58716 CH508060 2.000 50.80 1.250 31.75 0.530 13.46 60 H200152A HF-200125-2 58715 CH508125 2.000 50.80 1.250 31.75 0.530 13.46 125 H225060A HF-226026-2 58191 CH571026 2.250 57.15 1.039 26.39 0.600 15.24 26 H225138A HF-226060-2 58192 CH571060 2.250 57.15 1.039 26.39 0.600 15.24 60 H225287A HF-226125-2 58195 CH571125 2.250 57.15 1.039 26.39 0.600 15.24 125 H225033A HF-225026-2 58111 CH572026 2.250 57.15 1.400 35.56 0.550 13.97 26 H225075A HF-225060-2 58110 CH572060 2.250 57.15 1.400 35.56 0.550 13.97 60 H225156A HF-225125-2 58109 CH572125 2.250 57.15 1.400 35.56 0.550 13.97 125 H244084A N/A 58615 CH610026 2.441 62.00 1.283 32.60 0.984 25.00 26 H244193A N/A 58617 CH610060 2.441 62.00 1.283 32.60 0.984 25.00 60 H244402A N/A 58620 CH610125 2.441 62.00 1.283 32.60 0.984 25.00 125 H306030A HF-300026-2 58868 CH777026 3.063 77.80 1.938 49.23 0.500 12.70 26 H306068A HF-300060-2 58867 CH777060 3.063 77.80 1.938 49.23 0.500 12.70 60 H306142A HF-300125-2 58866 CH777125 3.063 77.80 1.938 49.23 0.500 12.70 125 H306037A HF-301026-2 58908 CH778026 3.063 77.80 1.938 49.23 0.625 15.88 26 H306085A HF-301060-2 58907 CH778060 3.063 77.80 1.938 49.23 0.625 15.88 60 H306178A HF-301125-2 58906 CH778125 3.063 77.80 1.938 49.23 0.625 15.88 125 H400021A HF-401026-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 14 H400040A HF-401060-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 26 H400092A HF-401125-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 60 H400025A HF-400026-2 58102 CH1016026 4.000 102.10 2.236 56.80 0.660 16.78 14 H400047A HF-400060-2 58099 CH1016060 4.000 102.10 2.236 56.80 0.660 16.78 26 H400112A HF-400125-2 58098 CH1016125 4.000 102.10 2.236 56.80 0.660 16.78 60 Dimension and Reference Table www.dongbuem.com 59

Sendust Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm S014013A MS-014060-8 77141 CS035060 0.140 3.56 0.070 1.78 0.060 1.52 60 S014016A MS-014075-8 77445 CS035075 0.140 3.56 0.070 1.78 0.060 1.52 75 S014019A MS-014090-8 77444 CS035090 0.140 3.56 0.070 1.78 0.060 1.52 90 S014026A MS-014125-8 77140 CS035125 0.140 3.56 0.070 1.78 0.060 1.52 125 S015007A MS-015026-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 26 S015017A MS-015060-8 77151 CS039060 0.155 3.94 0.088 2.24 0.100 2.54 60 S015021A MS-015075-8 77155 CS039075 0.155 3.94 0.088 2.24 0.100 2.54 75 S015025A MS-015090-8 77154 CS039090 0.155 3.94 0.088 2.24 0.100 2.54 90 S015035A MS-015125-8 77150 CS039125 0.155 3.94 0.088 2.24 0.100 2.54 125 S018009A MS-018026-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 26 S018020A MS-018060-8 77181 CS046060 0.183 4.65 0.093 2.36 0.100 2.54 60 S018025A MS-018075-8 77185 CS046075 0.183 4.65 0.093 2.36 0.100 2.54 75 S018030A MS-018090-8 77184 CS046090 0.183 4.65 0.093 2.36 0.100 2.54 90 S018042A MS-018125-8 77180 CS046125 0.183 4.65 0.093 2.36 0.100 2.54 125 S025010A MS-025026-8 N/A N/A 0.250 6.35 0.110 2.79 0.110 2.79 26 S025024A MS-025060-8 77021 CS063060 0.250 6.35 0.110 2.79 0.110 2.79 60 S025030A MS-025075-8 77825 CS063075 0.250 6.35 0.110 2.79 0.110 2.79 75 S025036A MS-025090-8 77824 CS063090 0.250 6.35 0.110 2.79 0.110 2.79 90 S025050A MS-025125-8 77020 CS063125 0.250 6.35 0.110 2.79 0.110 2.79 125 S026011A MS-027026-8 N/A N/A 0.260 6.60 0.105 2.67 0.100 2.54 26 S026026A MS-027060-8 77241 CS066060 0.260 6.60 0.105 2.67 0.100 2.54 60 S026032A MS-027075-8 77245 CS066075 0.260 6.60 0.105 2.67 0.100 2.54 75 S026039A MS-027090-8 77244 CS066090 0.260 6.60 0.105 2.67 0.100 2.54 90 S026054A MS-027125-8 77240 CS066125 0.260 6.60 0.105 2.67 0.100 2.54 125 S026021A MS-026026-8 N/A N/A 0.260 6.60 0.105 2.67 0.188 4.78 26 S026050A MS-026060-8 77271 CS067060 0.260 6.60 0.105 2.67 0.188 4.78 60 S026062A MS-026075-8 77875 CS067075 0.260 6.60 0.105 2.67 0.188 4.78 75 S026074A MS-026090-8 77874 CS067090 0.260 6.60 0.105 2.67 0.188 4.78 90 S026103A MS-026125-8 77270 CS067125 0.260 6.60 0.105 2.67 0.188 4.78 125 S031011A MS-031026-8 N/A N/A 0.310 7.87 0.156 3.96 0.125 3.18 26 S031025A MS-031060-8 77031 CS078060 0.310 7.87 0.156 3.96 0.125 3.18 60 S031031A MS-031075-8 77835 CS078075 0.310 7.87 0.156 3.96 0.125 3.18 75 S031037A MS-031090-8 77834 CS078090 0.310 7.87 0.156 3.96 0.125 3.18 90 S031052A MS-031125-8 77030 CS078125 0.310 7.87 0.156 3.96 0.125 3.18 125 S038011A MS-039026-8 N/A N/A 0.380 9.65 0.188 4.78 0.125 3.18 26 S038025A MS-039060-8 77281 CS096060 0.380 9.65 0.188 4.78 0.125 3.18 60 S038032A MS-039075-8 77885 CS096075 0.380 9.65 0.188 4.78 0.125 3.18 75 S038038A MS-039090-8 77884 CS096090 0.380 9.65 0.188 4.78 0.125 3.18 90 S038053A MS-039125-8 77280 CS096125 0.380 9.65 0.188 4.78 0.125 3.18 125 S038014A MS-038026-8 N/A N/A 0.380 9.65 0.188 4.78 0.156 3.96 26 S038032A MS-038060-8 77291 CS097060 0.380 9.65 0.188 4.78 0.156 3.96 60 S038040A MS-038075-8 77295 CS097075 0.380 9.65 0.188 4.78 0.156 3.96 75 S038048A MS-038090-8 77294 CS097090 0.380 9.65 0.188 4.78 0.156 3.96 90 S038066A MS-038125-8 77290 CS097125 0.380 9.65 0.188 4.78 0.156 3.96 125 S040014A MS-040026-8 N/A N/A 0.400 10.16 0.200 5.08 0.156 3.96 26 S040032A MS-040060-8 77041 CS102060 0.400 10.16 0.200 5.08 0.156 3.96 60 S040040A MS-040075-8 77845 CS102075 0.400 10.16 0.200 5.08 0.156 3.96 75 S040048A MS-040090-8 77844 CS102090 0.400 10.16 0.200 5.08 0.156 3.96 90 60 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm S040066A MS-040125-8 77040 CS102125 0.400 10.16 0.200 5.08 0.156 3.96 125 S044011A MS-044026-8 N/A CS112026 0.440 11.18 0.250 6.35 0.156 3.96 26 S044026A MS-044060-8 77131 CS112060 0.440 11.18 0.250 6.35 0.156 3.96 60 S044032A MS-044075-8 77335 CS112075 0.440 11.18 0.250 6.35 0.156 3.96 75 S044038A MS-044090-8 77334 CS112090 0.440 11.18 0.250 6.35 0.156 3.96 90 S044053A MS-044125-8 77130 CS112125 0.440 11.18 0.250 6.35 0.156 3.96 125 S050012A MS-050026-2 N/A CS127026 0.500 12.70 0.300 7.62 0.187 4.75 26 S050027A MS-050060-2 77051 CS127060 0.500 12.70 0.300 7.62 0.187 4.75 60 S050034A MS-050075-2 77055 CS127075 0.500 12.70 0.300 7.62 0.187 4.75 75 S050040A MS-050090-2 77054 CS127090 0.500 12.70 0.300 7.62 0.187 4.75 90 S050056A MS-050125-2 77050 CS127125 0.500 12.70 0.300 7.62 0.187 4.75 125 S065015A MS-065026-2 N/A CS166026 0.650 16.51 0.400 10.16 0.250 6.35 26 S065035A MS-065060-2 77121 CS166060 0.650 16.51 0.400 10.16 0.250 6.35 60 S065043A MS-065075-2 77225 CS166075 0.650 16.51 0.400 10.16 0.250 6.35 75 S065052A MS-065090-2 77224 CS166090 0.650 16.51 0.400 10.16 0.250 6.35 90 S065072A MS-065125-2 77120 CS166125 0.650 16.51 0.400 10.16 0.250 6.35 125 S068019A MS-068026-2 N/A CS172026 0.680 17.27 0.380 9.65 0.250 6.35 26 S068043A MS-068060-2 77381 CS172060 0.680 17.27 0.380 9.65 0.250 6.35 60 S068053A MS-068075-2 77385 CS172075 0.680 17.27 0.380 9.65 0.250 6.35 75 S068064A MS-068090-2 77384 CS172090 0.680 17.27 0.380 9.65 0.250 6.35 90 S068089A MS-068125-2 77380 CS172125 0.680 17.27 0.380 9.65 0.250 6.35 125 S080014A MS-080026-2 N/A CS203026 0.800 20.32 0.500 12.70 0.250 6.35 26 S080032A MS-080060-2 77848 CS203060 0.800 20.32 0.500 12.70 0.250 6.35 60 S080041A MS-080075-2 77211 CS203075 0.800 20.32 0.500 12.70 0.250 6.35 75 S080049A MS-080090-2 77210 CS203090 0.800 20.32 0.500 12.70 0.250 6.35 90 S080068A MS-080125-2 77206 CS203125 0.800 20.32 0.500 12.70 0.250 6.35 125 S090019A MS-090026-2 77312 CS229026 0.900 22.86 0.550 13.97 0.300 7.62 26 S090043A MS-090060-2 77059 CS229060 0.900 22.86 0.550 13.97 0.300 7.62 60 S090054A MS-090075-2 77315 CS229075 0.900 22.86 0.550 13.97 0.300 7.62 75 S090065A MS-090090-2 77314 CS229090 0.900 22.86 0.550 13.97 0.300 7.62 90 S090090A MS-090125-2 77310 CS229125 0.900 22.86 0.550 13.97 0.300 7.62 125 S092022A MS-092026-2 77352 CS234026 0.920 23.60 0.567 14.40 0.350 8.89 26 S092051A MS-092060-2 77351 CS234060 0.920 23.60 0.567 14.40 0.350 8.89 60 S092062A MS-092075-2 77355 CS234075 0.920 23.60 0.567 14.40 0.350 8.89 75 S092076A MS-092090-2 77354 CS234090 0.920 23.60 0.567 14.40 0.350 8.89 90 S092105A MS-092125-2 77350 CS234125 0.920 23.60 0.567 14.40 0.350 8.89 125 S106032A MS-106026-2 77932 CS270026 1.060 26.92 0.580 14.73 0.440 11.18 26 S106075A MS-106060-2 77894 CS270060 1.060 26.92 0.580 14.73 0.440 11.18 60 S106094A MS-106075-2 77935 CS270075 1.060 26.92 0.580 14.73 0.440 11.18 75 S106113A MS-106090-2 77934 CS270090 1.060 26.92 0.580 14.73 0.440 11.18 90 S106157A MS-106125-2 77930 CS270125 1.060 26.92 0.580 14.73 0.440 11.18 125 S130028A MS-130026-2 77550 CS330026 1.300 33.02 0.785 19.94 0.420 10.67 26 S130061A MS-130060-2 77071 CS330060 1.300 33.02 0.785 19.94 0.420 10.67 60 S130076A MS-130075-2 77553 CS330075 1.300 33.02 0.785 19.94 0.420 10.67 75 S130091A MS-130090-2 77552 CS330090 1.300 33.02 0.785 19.94 0.420 10.67 90 S130127A MS-130125-2 77548 CS330125 1.300 33.02 0.785 19.94 0.420 10.67 125 S135016A MS-135026-2 77587 CS343026 1.350 34.29 0.580 14.73 0.440 11.18 26 S135038A MS-135060-2 77586 CS343060 1.350 34.29 0.580 14.73 0.440 11.18 60 Dimension and Reference Table www.dongbuem.com 61

Sendust Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm S135047A MS-135075-2 77590 CS343075 1.350 34.29 0.580 14.73 0.440 11.18 75 S135057A MS-135090-2 77589 CS343090 1.350 34.29 0.580 14.73 0.440 11.18 90 S135079A MS-135125-2 77585 CS343125 1.350 34.29 0.580 14.73 0.440 11.18 125 S141024A MS-141026-2 77326 CS358026 1.410 35.81 0.880 22.35 0.412 10.46 26 S141056A MS-141060-2 77076 CS358060 1.410 35.81 0.880 22.35 0.412 10.46 60 S141070A MS-141075-2 77329 CS358075 1.410 35.81 0.880 22.35 0.412 10.46 75 S141084A MS-141090-2 77328 CS358090 1.410 35.81 0.880 22.35 0.412 10.46 90 S141127A MS-141125-2 77324 CS358125 1.410 35.81 0.880 22.35 0.412 10.46 125 S157035A MS-157026-2 77256 CS400026 1.570 39.38 0.950 24.13 0.570 14.48 26 S157081A MS-157060-2 77083 CS400060 1.570 39.38 0.950 24.13 0.570 14.48 60 S157101A MS-157075-2 77259 CS400075 1.570 39.38 0.950 24.13 0.570 14.48 75 S157121A MS-157090-2 77258 CS400090 1.570 39.38 0.950 24.13 0.570 14.48 90 S157168A MS-157125-2 77254 CS400125 1.570 39.38 0.950 24.13 0.570 14.48 125 S184059A MS-184026-2 77440 CS467026 1.840 46.72 0.950 24.13 0.710 18.03 26 S184135A MS-184060-2 77439 CS467060 1.840 46.72 0.950 24.13 0.710 18.03 60 S184169A MS-184075-2 77443 CS467075 1.840 46.72 0.950 24.13 0.710 18.03 75 S184202A MS-184090-2 77442 CS467090 1.840 46.72 0.950 24.13 0.710 18.03 90 S184281A MS-184125-2 77438 CS467125 1.840 46.72 0.950 24.13 0.710 18.03 125 S184037A MS-185026-2 77091 CS468026 1.840 46.72 1.130 28.70 0.600 15.24 26 S184086A MS-185060-2 77090 CS468060 1.840 46.72 1.130 28.70 0.600 15.24 60 S184107A MS-185075-2 77094 CS468075 1.840 46.72 1.130 28.70 0.600 15.24 75 S184128A MS-185090-2 77093 CS468090 1.840 46.72 1.130 28.70 0.600 15.24 90 S184178A MS-185125-2 77089 CS468125 1.840 46.72 1.130 28.70 0.600 15.24 125 S200032A MS-200026-2 77717 CS508026 2.000 50.80 1.250 31.75 0.530 13.46 26 S200073A MS-200060-2 77716 CS508060 2.000 50.80 1.250 31.75 0.530 13.46 60 S200091A MS-200075-2 77720 CS508075 2.000 50.80 1.250 31.75 0.530 13.46 75 S200109A MS-200090-2 77719 CS508090 2.000 50.80 1.250 31.75 0.530 13.46 90 S200152A MS-200125-2 77715 CS508125 2.000 50.80 1.250 31.75 0.530 13.46 125 S225060A MS-226026-2 77191 CS571026 2.250 57.15 1.039 26.39 0.600 15.24 26 S225138A MS-226060-2 77192 CS571060 2.250 57.15 1.039 26.39 0.600 15.24 60 S225172A MS-226075-2 77193 CS571075 2.250 57.15 1.039 26.39 0.600 15.24 75 S225207A MS-226090-2 77194 CS571090 2.250 57.15 1.039 26.39 0.600 15.24 90 S225287A MS-226125-2 77195 CS571125 2.250 57.15 1.039 26.39 0.600 15.24 125 S225033A MS-225026-2 77111 CS572026 2.250 57.15 1.400 35.56 0.550 13.97 26 S225075A MS-225060-2 77110 CS572060 2.250 57.15 1.400 35.56 0.550 13.97 60 S225094A MS-225075-2 77214 CS572075 2.250 57.15 1.400 35.56 0.550 13.97 75 S225112A MS-225090-2 77213 CS572090 2.250 57.15 1.400 35.56 0.550 13.97 90 S225156A MS-225125-2 77109 CS572125 2.250 57.15 1.400 35.56 0.550 13.97 125 S244084A N/A 77615 CS610026 2.441 62.00 1.283 32.60 0.984 25.00 26 S244193A N/A 77617 CS610060 2.441 62.00 1.283 32.60 0.984 25.00 60 S244241A N/A 77618 CS610075 2.441 62.00 1.283 32.60 0.984 25.00 75 S244289A N/A 77619 CS610090 2.441 62.00 1.283 32.60 0.984 25.00 90 S244402A N/A N/A CS610125 2.441 62.00 1.283 32.60 0.984 25.00 125 S306030A MS-300026-2 77868 CS777026 3.063 77.80 1.938 49.23 0.500 12.70 26 S306068A MS-300060-2 77867 CS777060 3.063 77.80 1.938 49.23 0.500 12.70 60 S306085A MS-300075-2 N/A CS777075 3.063 77.80 1.938 49.23 0.500 12.70 75 S306102A MS-300090-2 N/A CS777090 3.063 77.80 1.938 49.23 0.500 12.70 90 S306142A MS-300125-2 N/A CS777125 3.063 77.80 1.938 49.23 0.500 12.70 125 62 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm S306037A MS-301026-2 77908 CS778026 3.063 77.80 1.938 49.23 0.625 15.88 26 S306085A MS-301060-2 77907 CS778060 3.063 77.80 1.938 49.23 0.625 15.88 60 S306107A MS-301075-2 N/A CS778075 3.063 77.80 1.938 49.23 0.625 15.88 75 S306128A MS-301090-2 N/A CS778090 3.063 77.80 1.938 49.23 0.625 15.88 90 S306178A MS-301125-2 77906 CS778125 3.063 77.80 1.938 49.23 0.625 15.88 125 S400021A MS-401014-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 14 S400040A MS-401026-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 26 S400054A N/A N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 35 S400092A MS-401060-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 60 S400025A MS-400014-2 N/A N/A 4.000 102.10 2.236 56.80 0.660 16.78 14 S400047A MS-400026-2 77102 CS1016026 4.000 102.10 2.236 56.80 0.660 16.78 26 S400063A N/A N/A N/A 4.000 102.10 2.236 56.80 0.660 16.78 35 S400112A MS-400060-2 77099 CS1016060 4.000 102.10 2.236 56.80 0.660 16.78 60 Dimension and Reference Table www.dongbuem.com 63

Power Flux Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm W014011A N/A N/A N/A 0.140 3.56 0.070 1.78 0.060 1.52 50 W014013A FS-014060-8 78141 CK035060 0.140 3.56 0.070 1.78 0.060 1.52 60 W014019A FS-014090-8 78444 CK035090 0.140 3.56 0.070 1.78 0.060 1.52 90 W015014A N/A N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 50 W015017A FS-015060-8 78151 CK390060 0.155 3.94 0.088 2.24 0.100 2.54 60 W015025A FS-015090-8 78154 CK390090 0.155 3.94 0.088 2.24 0.100 2.54 90 W018017A N/A N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 50 W018020A FS-018060-8 78181 CK046060 0.183 4.65 0.093 2.36 0.100 2.54 60 W018030A FS-018090-8 78184 CK046090 0.183 4.65 0.093 2.36 0.100 2.54 90 W025020A N/A N/A N/A 0.250 6.35 0.110 2.79 0.110 2.79 50 W025024A FS-025060-8 78021 CK063060 0.250 6.35 0.110 2.79 0.110 2.79 60 W025036A FS-025090-8 78824 CK063090 0.250 6.35 0.110 2.79 0.110 2.79 90 W026022A N/A N/A N/A 0.260 6.60 0.105 2.67 0.100 2.54 50 W026026A FS-027060-8 78241 CK066060 0.260 6.60 0.105 2.67 0.100 2.54 60 W026039A FS-027090-8 78244 CK066090 0.260 6.60 0.105 2.67 0.100 2.54 90 W026041A N/A N/A N/A 0.260 6.60 0.105 2.67 0.188 4.78 50 W026050A FS-026060-8 78271 CK067060 0.260 6.60 0.105 2.67 0.188 4.78 60 W026074A FS-026090-8 78874 CK067090 0.260 6.60 0.105 2.67 0.188 4.78 90 W031021A N/A N/A N/A 0.310 7.87 0.156 3.96 0.125 3.18 50 W031025A FS-031060-8 78031 CK078060 0.310 7.87 0.156 3.96 0.125 3.18 60 W031037A FS-031090-8 78834 CK078090 0.310 7.87 0.156 3.96 0.125 3.18 90 W038021A N/A N/A N/A 0.380 9.65 0.188 4.78 0.125 3.18 50 W038025A FS-039060-8 78281 CK096060 0.380 9.65 0.188 4.78 0.125 3.18 60 W038038A FS-039090-8 78884 CK096090 0.380 9.65 0.188 4.78 0.125 3.18 90 W038026A N/A N/A N/A 0.380 9.65 0.188 4.78 0.156 3.96 50 W038032A FS-038060-8 78291 CK097060 0.380 9.65 0.188 4.78 0.156 3.96 60 W038048A FS-038090-8 78294 CK097090 0.380 9.65 0.188 4.78 0.156 3.96 90 W040026A N/A N/A N/A 0.400 10.16 0.200 5.08 0.156 3.96 50 W040032A FS-040060-8 78041 CK102060 0.400 10.16 0.200 5.08 0.156 3.96 60 W040048A FS-040090-8 78844 CK102090 0.400 10.16 0.200 5.08 0.156 3.96 90 W044021A N/A N/A N/A 0.440 11.18 0.250 6.35 0.156 3.96 50 W044026A FS-044060-8 78131 CK112060 0.440 11.18 0.250 6.35 0.156 3.96 60 W044038A FS-044090-8 78334 CK112090 0.440 11.18 0.250 6.35 0.156 3.96 90 W050022A N/A N/A N/A 0.500 12.70 0.300 7.62 0.187 4.75 50 W050027A FS-050060-2 78051 CK127060 0.500 12.70 0.300 7.62 0.187 4.75 60 W050040A FS-050090-2 78054 CK127090 0.500 12.70 0.300 7.62 0.187 4.75 90 W065029A N/A N/A N/A 0.650 16.51 0.400 10.16 0.250 6.35 50 W065035A FS-065060-2 78121 CK166060 0.650 16.51 0.400 10.16 0.250 6.35 60 W065052A FS-065090-2 78224 CK166090 0.650 16.51 0.400 10.16 0.250 6.35 90 W068035A N/A N/A N/A 0.680 17.27 0.380 9.65 0.250 6.35 50 W068043A FS-068060-2 78381 CK172060 0.680 17.27 0.380 9.65 0.250 6.35 60 W068064A FS-068090-2 78384 CK172090 0.680 17.27 0.380 9.65 0.250 6.35 90 W080026A N/A N/A N/A 0.800 20.32 0.500 12.70 0.250 6.35 50 W080032A FS-080060-2 78848 CK203060 0.800 20.32 0.500 12.70 0.250 6.35 60 W080049A FS-080090-2 78210 CK203090 0.800 20.32 0.500 12.70 0.250 6.35 90 W090035A N/A N/A N/A 0.900 22.86 0.550 13.97 0.300 7.62 50 W090043A FS-090060-2 78059 CK229060 0.900 22.86 0.550 13.97 0.300 7.62 60 W090065A FS-090090-2 78314 CK229090 0.900 22.86 0.550 13.97 0.300 7.62 90 64 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm W092042A N/A N/A N/A 0.920 23.60 0.567 14.40 0.350 8.89 50 W092051A FS-092060-2 78351 CK234060 0.920 23.60 0.567 14.40 0.350 8.89 60 W092076A FS-092090-2 78354 CK234090 0.920 23.60 0.567 14.40 0.350 8.89 90 W106062A N/A N/A N/A 1.060 26.92 0.580 14.73 0.440 11.18 50 W106075A FS-106060-2 78894 CK270060 1.060 26.92 0.580 14.73 0.440 11.18 60 W106113A FS-106090-2 78934 CK270090 1.060 26.92 0.580 14.73 0.440 11.18 90 W130050A N/A N/A N/A 1.300 33.02 0.785 19.94 0.420 10.67 50 W130061A FS-130060-2 78071 CK330060 1.300 33.02 0.785 19.94 0.420 10.67 60 W130091A FS-130090-2 78522 CK330090 1.300 33.02 0.785 19.94 0.420 10.67 90 W135031A N/A N/A N/A 1.350 34.29 0.580 14.73 0.440 11.18 50 W135038A FS-135060-2 78586 CK343060 1.350 34.29 0.580 14.73 0.440 11.18 60 W135057A FS-135090-2 78589 CK343090 1.350 34.29 0.580 14.73 0.440 11.18 90 W141047A N/A N/A N/A 1.410 35.81 0.880 22.35 0.412 10.46 50 W141056A FS-141060-2 78076 CK358060 1.410 35.81 0.880 22.35 0.412 10.46 60 W141084A FS-141090-2 78328 CK358090 1.410 35.81 0.880 22.35 0.412 10.46 90 W157067A N/A N/A N/A 1.570 39.38 0.950 24.13 0.570 14.48 50 W157081A FS-157060-2 78083 CK400060 1.570 39.38 0.950 24.13 0.570 14.48 60 W157121A FS-157090-2 78258 CK400090 1.570 39.38 0.950 24.13 0.570 14.48 90 W184112A N/A N/A N/A 1.840 46.72 0.950 24.13 0.710 18.03 50 W184135A FS-184060-2 78439 CK467060 1.840 46.72 0.950 24.13 0.710 18.03 60 W184202A FS-184090-2 78442 CK467090 1.840 46.72 0.950 24.13 0.710 18.03 90 W184070A N/A N/A N/A 1.840 46.72 1.130 28.70 0.600 15.24 50 W184086A FS-185060-2 78090 CK468060 1.840 46.72 1.130 28.70 0.600 15.24 60 W184128A FS-185090-2 79093 CK468090 1.840 46.72 1.130 28.70 0.600 15.24 90 W200060A N/A N/A N/A 2.000 50.80 1.250 31.75 0.530 13.46 50 W200073A FS-200060-2 78716 CK508060 2.000 50.80 1.250 31.75 0.530 13.46 60 W200109A FS-200090-2 78719 CK508090 2.000 50.80 1.250 31.75 0.530 13.46 90 W225115A N/A N/A N/A 2.250 57.15 1.039 26.39 0.600 15.24 50 W225138A FS-226060-2 78192 CK571060 2.250 57.15 1.039 26.39 0.600 15.24 60 W225207A FS-226090-2 78194 CK571090 2.250 57.15 1.039 26.39 0.600 15.24 90 W225062A N/A N/A N/A 2.250 57.15 1.400 35.56 0.550 13.97 50 W225075A FS-225060-2 78110 CK572060 2.250 57.15 1.400 35.56 0.550 13.97 60 W225112A FS-225090-2 78213 CK572090 2.250 57.15 1.400 35.56 0.550 13.97 90 W244045A N/A N/A N/A 2.441 62.00 1.283 32.60 0.984 25.00 14 W244084A N/A N/A CK610026 2.441 62.00 1.283 32.60 0.984 25.00 26 W244193A N/A N/A CK610060 2.441 62.00 1.283 32.60 0.984 25.00 60 W244241A N/A N/A CK610075 2.441 62.00 1.283 32.60 0.984 25.00 75 W244289A N/A N/A CK610090 2.441 62.00 1.283 32.60 0.984 25.00 90 W306056A N/A N/A N/A 3.063 77.80 1.938 49.23 0.500 12.70 50 W306068A FS-300060-2 78867 CK777060 3.063 77.80 1.938 49.23 0.500 12.70 60 W306102A FS-300090-2 N/A CK777090 3.063 77.80 1.938 49.23 0.500 12.70 90 W306071A N/A N/A N/A 3.063 77.80 1.938 49.23 0.625 15.88 50 W306085A FS-301060-2 78907 CK778060 3.063 77.80 1.938 49.23 0.625 15.88 60 W306128A FS-301090-2 N/A CK778090 3.063 77.80 1.938 49.23 0.625 15.88 90 W400077A N/A N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 50 W400092A FS-401060-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 60 W400090A N/A N/A N/A 4.000 102.10 2.236 56.80 0.660 16.78 50 W400112A FS-400060-2 N/A CK1016060 4.000 102.10 2.236 56.80 0.660 16.78 60 Dimension and Reference Table www.dongbuem.com 65

Ultra Flux Cross Reference POWDER CORES Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm U014013A OP-014060-8 N/A N/A 0.140 3.56 0.070 1.78 0.060 1.52 60 U014026A OP-014125-8 N/A N/A 0.140 3.56 0.070 1.78 0.060 1.52 125 U015007A OP-015026-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 26 U015017A OP-015060-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 60 U015035A OP-015125-8 N/A N/A 0.155 3.94 0.088 2.24 0.100 2.54 125 U018009A OP-018026-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 26 U018020A OP-018060-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 60 U018042A OP-018125-8 N/A N/A 0.183 4.65 0.093 2.36 0.100 2.54 125 U025010A OP-025026-8 N/A N/A 0.250 6.35 0.110 2.79 0.110 2.79 26 U025024A OP-025060-8 N/A N/A 0.250 6.35 0.110 2.79 0.110 2.79 60 U025050A OP-025125-8 N/A N/A 0.250 6.35 0.110 2.79 0.110 2.79 125 U026011A OP-027026-8 N/A N/A 0.260 6.60 0.105 2.67 0.100 2.54 26 U026026A OP-027060-8 N/A N/A 0.260 6.60 0.105 2.67 0.100 2.54 60 U026054A OP-027125-8 N/A N/A 0.260 6.60 0.105 2.67 0.100 2.54 125 U026021A OP-026026-8 N/A N/A 0.260 6.60 0.105 2.67 0.188 4.78 26 U026050A OP-026060-8 N/A N/A 0.260 6.60 0.105 2.67 0.188 4.78 60 U026103A OP-026125-8 N/A N/A 0.260 6.60 0.105 2.67 0.188 4.78 125 U031011A OP-031026-8 N/A N/A 0.310 7.87 0.156 3.96 0.125 3.18 26 U031025A OP-031060-8 N/A N/A 0.310 7.87 0.156 3.96 0.125 3.18 60 U031052A OP-031125-8 N/A N/A 0.310 7.87 0.156 3.96 0.125 3.18 125 U038011A OP-039026-8 N/A HS096026 0.380 9.65 0.188 4.78 0.125 3.18 26 U038025A OP-039060-8 N/A HS096060 0.380 9.65 0.188 4.78 0.125 3.18 60 U038053A OP-039125-8 N/A N/A 0.380 9.65 0.188 4.78 0.125 3.18 125 U038014A OP-038026-8 N/A HS097026 0.380 9.65 0.188 4.78 0.156 3.96 26 U038032A OP-038060-8 N/A HS097060 0.380 9.65 0.188 4.78 0.156 3.96 60 U038066A OP-038125-8 N/A N/A 0.380 9.65 0.188 4.78 0.156 3.96 125 U040014A OP-040026-2 N/A HS102026 0.400 10.16 0.200 5.08 0.156 3.96 26 U040032A OP-040060-2 N/A HS102060 0.400 10.16 0.200 5.08 0.156 3.96 60 U040066A OP-040125-2 N/A N/A 0.400 10.16 0.200 5.08 0.156 3.96 125 U044011A OP-044026-2 N/A HS112026 0.440 11.18 0.250 6.35 0.156 3.96 26 U044026A OP-044060-2 N/A HS112060 0.440 11.18 0.250 6.35 0.156 3.96 60 U044053A OP-044125-2 N/A N/A 0.440 11.18 0.250 6.35 0.156 3.96 125 U050012A OP-050026-2 N/A HS127026 0.500 12.70 0.300 7.62 0.187 4.75 26 U050027A OP-050060-2 N/A HS127060 0.500 12.70 0.300 7.62 0.187 4.75 60 U050056A OP-050125-2 N/A N/A 0.500 12.70 0.300 7.62 0.187 4.75 125 U065015A OP-065026-2 N/A HS166026 0.650 16.51 0.400 10.16 0.250 6.35 26 U065035A OP-065060-2 N/A HS166060 0.650 16.51 0.400 10.16 0.250 6.35 60 U065072A OP-065125-2 N/A N/A 0.650 16.51 0.400 10.16 0.250 6.35 125 U068019A OP-068026-2 N/A HS172026 0.680 17.27 0.380 9.65 0.250 6.35 26 U068043A OP-068060-2 N/A HS172060 0.680 17.27 0.380 9.65 0.250 6.35 60 U068089A OP-068125-2 N/A N/A 0.680 17.27 0.380 9.65 0.250 6.35 125 U080014A OP-080026-2 N/A HS203026 0.800 20.32 0.500 12.70 0.250 6.35 26 U080032A OP-080060-2 0088848A7 HS203060 0.800 20.32 0.500 12.70 0.250 6.35 60 U080068A OP-080125-2 N/A N/A 0.800 20.32 0.500 12.70 0.250 6.35 125 U090019A OP-090026-2 N/A HS229026 0.900 22.86 0.550 13.97 0.300 7.62 26 U090043A OP-090060-2 0088059A7 HS229060 0.900 22.86 0.550 13.97 0.300 7.62 60 U090090A OP-090125-2 N/A N/A 0.900 22.86 0.550 13.97 0.300 7.62 125 U092022A OP-092026-2 N/A HS234026 0.920 23.60 0.567 14.40 0.350 8.89 26 66 POWDER CORES

Dongbu Arnold Mag-Inc CSC O.D I.D Height Inch mm Inch mm Inch mm Perm U092051A OP-092060-2 0088351A7 HS234060 0.920 23.60 0.567 14.40 0.350 8.89 60 U092105A OP-092125-2 N/A N/A 0.920 23.60 0.567 14.40 0.350 8.89 125 U106032A OP-106026-2 N/A HS270026 1.060 26.92 0.580 14.73 0.440 11.18 26 U106075A OP-106060-2 0088894A7 HS270060 1.060 26.92 0.580 14.73 0.440 11.18 60 U106157A OP-106125-2 N/A N/A 1.060 26.92 0.580 14.73 0.440 11.18 125 U130028A OP-130026-2 N/A HS330026 1.300 33.02 0.785 19.94 0.420 10.67 26 U130061A OP-130060-2 0088071A7 HS330060 1.300 33.02 0.785 19.94 0.420 10.67 60 U130127A OP-130125-2 N/A N/A 1.300 33.02 0.785 19.94 0.420 10.67 125 U135016A OP-135026-2 N/A HS343026 1.350 34.29 0.580 14.73 0.440 11.18 26 U135038A OP-135060-2 N/A HS343060 1.350 34.29 0.580 14.73 0.440 11.18 60 U135079A OP-135125-2 N/A N/A 1.350 34.29 0.580 14.73 0.440 11.18 125 U141024A OP-141026-2 N/A HS358026 1.410 35.81 0.880 22.35 0.412 10.46 26 U141056A OP-141060-2 N/A HS358060 1.410 35.81 0.880 22.35 0.412 10.46 60 U141127A OP-141125-2 N/A N/A 1.410 35.81 0.880 22.35 0.412 10.46 125 U157035A OP-157026-2 N/A HS400026 1.570 39.38 0.950 24.13 0.570 14.48 26 U157081A OP-157060-2 N/A HS400060 1.570 39.38 0.950 24.13 0.570 14.48 60 U157168A OP-157125-2 N/A N/A 1.570 39.38 0.950 24.13 0.570 14.48 125 U184059A OP-184026-2 N/A HS467026 1.840 46.72 0.950 24.13 0.710 18.03 26 U184135A OP-184060-2 N/A HS467060 1.840 46.72 0.950 24.13 0.710 18.03 60 U184281A OP-184125-2 N/A N/A 1.840 46.72 0.950 24.13 0.710 18.03 125 U184037A OP-185026-2 N/A HS468026 1.840 46.72 1.130 28.70 0.600 15.24 26 U184086A OP-185060-2 N/A HS468060 1.840 46.72 1.130 28.70 0.600 15.24 60 U184178A OP-185125-2 N/A N/A 1.840 46.72 1.130 28.70 0.600 15.24 125 U200032A OP-200026-2 N/A HS508026 2.000 50.80 1.250 31.75 0.530 13.46 26 U200073A OP-200060-2 N/A HS508060 2.000 50.80 1.250 31.75 0.530 13.46 60 U200152A OP-200125-2 N/A N/A 2.000 50.80 1.250 31.75 0.530 13.46 125 U225060A OP-226026-2 N/A HS571026 2.250 57.15 1.039 26.39 0.600 15.24 26 U225138A OP-226060-2 N/A HS571060 2.250 57.15 1.039 26.39 0.600 15.24 60 U225287A OP-226125-2 N/A N/A 2.250 57.15 1.039 26.39 0.600 15.24 125 U225033A OP-225026-2 N/A HS572026 2.250 57.15 1.400 35.56 0.550 13.97 26 U225075A OP-225060-2 N/A HS572060 2.250 57.15 1.400 35.56 0.550 13.97 60 U225156A OP-225125-2 N/A N/A 2.250 57.15 1.400 35.56 0.550 13.97 125 U244084A N/A N/A HS610026 2.441 62.00 1.283 32.60 0.984 25.00 26 U244193A N/A N/A HS610060 2.441 62.00 1.283 32.60 0.984 25.00 60 U244402A N/A N/A N/A 2.441 62.00 1.283 32.60 0.984 25.00 125 U306030A OP-300026-2 N/A HS777026 3.063 77.80 1.938 49.23 0.500 12.70 26 U306068A OP-300060-2 N/A HS777060 3.063 77.80 1.938 49.23 0.500 12.70 60 U306142A OP-300125-2 N/A N/A 3.063 77.80 1.938 49.23 0.500 12.70 125 U306037A OP-301026-2 N/A HS778026 3.063 77.80 1.938 49.23 0.625 15.88 26 U306085A OP-301060-2 N/A HS778060 3.063 77.80 1.938 49.23 0.625 15.88 60 U306178A OP-301125-2 N/A N/A 3.063 77.80 1.938 49.23 0.625 15.88 125 U400021A OP-401026-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 14 U400040A OP-401060-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 26 U400092A OP-401125-2 N/A N/A 4.000 102.10 2.236 56.80 0.535 13.59 60 U400025A OP-400026-2 N/A HS1016026 4.000 102.10 2.236 56.80 0.660 16.78 14 U400047A OP-400060-2 N/A HS1016060 4.000 102.10 2.236 56.80 0.660 16.78 26 U400112A OP-400125-2 N/A N/A 4.000 102.10 2.236 56.80 0.660 16.78 60 Dimension and Reference Table www.dongbuem.com 67

4Standard MPC Toroidal Series

0.140 0.070 0.060 (inch) 3.56 1.78 1.52 (mm) 0.140" 0.070" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M014026A 0.070" 26 - - - - - - 50 11 - - - - W014011A 60 13 M014013A H014013A S014013A W014013A U014013A 75 16 - - S014016A - - 90 19 - H014019A S014019A W014019A U014019A 125 26 M014026A H014026A S014026A - U014026A 147 31 M014031A H014031A - - - 160 33 M014033A H014033A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 4.19 mm 0.165 in I.D.(min.) 1.27 mm 0.050 in HT.(max.) 2.16 mm 0.085 in Physical Constant Window Area 0.018 cm 2 3552 c.mils Cross Section Area 0.013 cm 2 0.002 in 2 Path Length 0.817 cm 0.322 in Volume 0.011 cm 3 0.001 in 3 30 13 0.03191 4.78 2.75 31 14 0.04328 4.72 2.69 32 16 0.06232 4.67 2.64 33 18 0.08849 4.62 2.59 34 21 0.13015 4.57 2.54 35 24 0.18766 4.53 2.50 36 28 0.27570 4.49 2.46 37 31 0.38604 4.47 2.44 38 35 0.54734 4.44 2.41 39 40 0.79061 4.41 2.38 40 46 1.14566 4.38 2.35 41 52 1.63392 4.36 2.33 42 59 2.33657 4.34 2.31 43 66 3.29710 4.33 2.30 44 72 4.53514 4.32 2.29 45 84 6.68976 4.30 2.27 AL value vs. DC Bias 40 AL (nh/n 2 ) 35 30 25 20 15 H014026A U014026A M014026A S014026A 10 5 0 10 20 30 40 50 60 70 80 NI(AT) H014013A U014013A W014013A M014013A S014013A 70 POWDER CORES

0.155 0.088 0.100 (inch) 3.94 2.24 2.54 (mm) 0.155" 0.088" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M015035A 0.100" 26 7 M015007A H015007A - - - 50 14 - - - - W015014A 60 17 M015017A H015017A S015017A W015017A U015017A 75 21 - - S015021A - - 90 25 - H015025A S015025A W015025A U015025A 125 35 M015035A H015035A S015035A - U015035A 147 41 M015041A H015041A - - - 160 45 M015045A H015045A - - - Core Dimensions (after Finish) O.D.(max.) 4.57 mm 0.180 in I.D.(min.) 1.73 mm 0.068 in HT.(max.) 3.18 mm 0.125 in Physical Constant Window Area 0.030 cm 2 5921 c.mils Cross Section Area 0.021 cm 2 0.003 in 2 Path Length 0.942 cm 0.371 in Volume 0.019 cm 3 0.001 in 3 28 13 0.02547 5.30 3.91 29 15 0.03698 5.23 3.84 30 17 0.05302 5.16 3.77 31 20 0.07857 5.10 3.71 32 22 0.10889 5.05 3.66 33 25 0.15617 5.00 3.61 34 29 0.22838 4.95 3.56 35 33 0.32789 4.91 3.52 36 37 0.46294 4.87 3.48 37 41 0.64878 4.85 3.46 38 43 0.85450 4.82 3.43 39 53 1.33115 4.79 3.40 40 61 1.93053 4.76 3.37 41 68 2.71510 4.74 3.35 42 78 3.92527 4.72 3.33 43 87 5.52276 4.71 3.32 Standard MPC Toroidal Series AL value vs. DC Bias 45 40 AL (nh/n 2 ) 35 30 25 20 15 H015035A U015035A M015035A S015035A 10 5 H015017A U015017A W015017A M015017A S015017A 0 10 20 30 40 50 60 70 80 90 100 NI(AT) www.dongbuem.com 71

0.183 0.093 0.100 (inch) 4.65 2.36 2.54 (mm) 0.183" 0.093" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M018042A 0.100" 26 9 M018009A H018009A S018009A W018009A U018009A 50 17 - - - W018017A - 60 20 M018020A H018020A S018020A W018020A U018020A 75 25 - - S018025A - - 90 30 - H018030A S018030A W018030A U018030A 125 42 M018042A H018042A S018042A - U018042A 147 49 M018049A H018049A - - - 160 53 M018053A M018053A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 5.28 mm 0.208 in I.D.(min.) 1.85 mm 0.073 in HT.(max.) 3.18 mm 0.125 in Physical Constant Window Area 0.029 cm 2 5723 c.mils Cross Section Area 0.028 cm 2 0.004 in 2 Path Length 1.062 cm 0.418 in Volume 0.030 cm 3 0.002 in 3 27 14 0.02735 7.81 4.25 28 16 0.03940 7.72 4.16 29 18 0.05577 7.65 4.09 30 21 0.08230 7.58 4.02 31 23 0.11353 7.52 3.96 32 26 0.16170 7.47 3.91 33 30 0.23548 7.42 3.86 34 34 0.33644 7.37 3.81 35 38 0.47442 7.33 3.77 36 44 0.69175 7.29 3.73 37 48 0.95439 7.27 3.71 38 54 1.34836 7.24 3.68 39 62 1.95665 7.21 3.65 40 71 2.82341 7.18 3.62 41 80 4.01363 7.16 3.60 42 91 5.75422 7.14 3.58 AL value vs. DC Bias 45 40 35 30 H018042A U018042A M018042A S018042A AL (nh/n 2 ) 25 20 15 10 5 H018020A U018020A W018020A M018020A S018020A 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 NI(AT) 72 POWDER CORES

0.250 0.110 0.110 (inch) 6.35 2.79 2.79 (mm) 0.250" 0.110" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M025050A 0.110" 26 10 M025010A H025010A S025010A W025010A U025010A 50 20 - - - W025020A - 60 24 M025024A H025024A S025024A W025024A U025024A 75 30 - - S025030A - - 90 36 - H025036A S025036A W025036A U025036A 125 50 M025050A H025050A S025050A - U025050A 147 59 M025059A H025059A - - - 160 64 M025064A H025064A - - - Core Dimensions (after Finish) O.D.(max.) 6.99 mm 0.275 in I.D.(min.) 2.29 mm 0.090 in HT.(max.) 3.43 mm 0.135 in Physical Constant Window Area 0.041 cm 2 8091 c.mils Cross Section Area 0.047 cm 2 0.007 in 2 Path Length 1.361 cm 0.536 in Volume 0.064 cm 3 0.004 in 3 27 14 0.02735 7.81 4.25 28 16 0.03940 7.72 4.16 29 18 0.05577 7.65 4.09 30 21 0.08230 7.58 4.02 31 23 0.11353 7.52 3.96 32 26 0.16170 7.47 3.91 33 30 0.23548 7.42 3.86 34 34 0.33644 7.37 3.81 35 38 0.47442 7.33 3.77 36 44 0.69175 7.29 3.73 37 48 0.95439 7.27 3.71 38 54 1.34836 7.24 3.68 39 62 1.95665 7.21 3.65 40 71 2.82341 7.18 3.62 41 80 4.01363 7.16 3.60 42 91 5.75422 7.14 3.58 Standard MPC Toroidal Series AL value vs. DC Bias 55 50 45 40 35 H025050A U025050A M025050A S025050A AL (nh/n 2 ) 30 25 20 15 10 5 H025024A U025024A W025024A M025024A S025024A 0 20 40 60 80 100 120 140 160 180 200 NI(AT) www.dongbuem.com 73

0.260 0.105 0.100 (inch) 6.60 2.67 2.54 (mm) 0.260" 0.105" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M026054A 0.100" 26 11 M026011A H026011A S026011A W026011A U026011A 50 22 - - - W026022A - 60 26 M026026A H026026A S026026A W026026A U026026A 75 32 - - S026032A - - 90 39 - H026039A S026039A W026039A U026039A 125 54 M026054A H026054A S026054A - U026054A 147 64 M026064A H026064A - - - 160 69 M026069A H026069A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 7.24 mm 0.285 in I.D.(min.) 2.16 mm 0.085 in HT.(max.) 3.18 mm 0.125 in Physical Constant Window Area 0.038 cm 2 7499 c.mils Cross Section Area 0.048 cm 2 0.0074 in 2 Path Length 1.363 cm 0.537 in Volume 0.064 cm 3 0.004 in 3 26 12 0.01840 8.14 4.08 27 13 0.02513 8.06 4.00 28 16 0.03899 7.97 3.91 29 17 0.05212 7.90 3.84 30 20 0.07756 7.83 3.77 31 22 0.10747 7.77 3.71 32 25 0.15387 7.72 3.66 33 28 0.21750 7.67 3.61 34 33 0.32316 7.62 3.56 35 37 0.45714 7.58 3.52 36 42 0.65345 7.54 3.48 37 46 0.90513 7.52 3.46 38 52 1.28494 7.49 3.43 39 60 1.87387 7.46 3.40 40 68 2.67604 7.43 3.37 - - - - - AL value vs. DC Bias 60 55 50 AL (nh/n 2 ) 45 40 35 30 25 H026054A U026054A M026054A S026054A 20 15 10 5 H026026A U026026A W026026A M026026A S026026A 0 20 40 60 80 100 120 140 160 180 200 220 NI(AT) 74 POWDER CORES

0.260 0.105 0.188 (inch) 6.60 2.67 4.78 (mm) 0.260" 0.105" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M026103A 0.188" 26 21 M026021A H026021A S026021A W026021A U026021A 50 41 - - - W026041A - 60 50 M026050A H026050A S026050A W026050A U026050A 75 62 - - S026062A - - 90 74 - H026074A S026074A W026074A U026074A 125 103 M026103A H026103A S026103A - U026103A 147 122 M026122A H026122A - - - 160 132 M026132A H026122A - - - Core Dimensions (after Finish) O.D.(max.) 7.24mm 0.285 in I.D.(min.) 2.16 mm 0.085 in HT.(max.) 5.54 mm 0.218 in Physical Constant Window Area 0.038 cm 2 7499 c.mils Cross Section Area 0.092 cm 2 0.014 in 2 Path Length 1.363 cm 0.537 in Volume 0.125 cm 3 0.008 in 3 26 12 0.02599 8.14 6.44 27 13 0.03550 8.06 6.36 28 16 0.05507 7.97 6.27 29 17 0.07362 7.90 6.20 30 20 0.10956 7.83 6.13 31 22 0.15181 7.77 6.07 32 25 0.21735 7.72 6.02 33 28 0.30723 7.67 5.97 34 33 0.45649 7.62 5.92 35 37 0.64575 7.58 5.88 36 42 0.92306 7.54 5.84 37 46 1.27858 7.52 5.82 38 52 1.81509 7.49 5.79 39 60 2.64701 7.46 5.76 40 68 3.78015 7.43 5.73 - - - - - Standard MPC Toroidal Series AL value vs. DC Bias 110 100 AL (nh/n 2 ) 90 80 70 60 50 40 30 20 10 H026103A U026103A M026103A S026103A H026050A U026050A W026050A M026050A S026050A 0 20 40 60 80 100 120 140 160 180 200 220 NI(AT) www.dongbuem.com 75

0.310 0.156 0.125 (inch) 7.87 3.96 3.18 (mm) 0.310" 0.156" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M031052A 0.125" 26 11 M031011A H031011A S031011A W031011A U031011A 50 21 - - - W031021A - 60 25 M031025A H031025A S031025A W031025A U031025A 75 31 - - S031031A - - 90 37 - H031037A S031037A W031037A U031037A 125 52 M031052A H031052A S031052A - U031052A 147 62 M031062A H031062A - - - 160 66 M031066A H031066A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 8.51 mm 0.335 in I.D.(min.) 3.43 mm 0.135 in HT.(max.) 3.81 mm 0.150 in Physical Constant Window Area 0.092 cm 2 18156 c.mils Cross Section Area 0.061 cm 2 0.009 in 2 Path Length 1.787 cm 0.704 in Volume 0.109 cm 3 0.007 in 3 23 13 0.01103 9.77 5.07 24 15 0.01604 9.64 4.94 25 18 0.02423 9.52 4.82 26 20 0.03404 9.41 4.71 27 23 0.04936 9.33 4.63 28 26 0.07033 9.24 4.54 29 29 0.09870 9.17 4.47 30 33 0.14207 9.10 4.40 31 37 0.20065 9.04 4.34 32 41 0.28014 8.99 4.29 33 46 0.39667 8.94 4.24 34 53 0.57617 8.89 4.20 35 60 0.82296 8.85 4.15 36 67 1.15722 8.81 4.11 37 73 1.59461 8.79 4.09 38 83 2.27686 8.76 4.06 AL value vs. DC Bias 55 50 AL (nh/n 2 ) 45 40 35 30 25 20 15 10 5 H031052A U031052A M031052A S031052A H031025A U031025A W031025A M031025A S031025A 0 20 40 60 80 100 120 140 160 180 200 220 240 260 NI(AT) 76 POWDER CORES

0.380 0.188 0.125 (inch) 9.65 4.78 3.18 (mm) 0.380" 0.188" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M038053A 0.125" 26 11 M038011A H038011A S038011A W038011A U038011A 50 21 - - - W038021A - 60 25 M038025A H038025A S038025A W038025A U038025A 75 32 - - S038032A - - 90 38 - H038038A S038038A W038038A U038038A 125 53 M038053A H038053A S038053A - U038053A 147 63 M038063A H038063A - - - 160 68 M038068A H038068A - - - Core Dimensions (after Finish) O.D.(max.) 10.29mm 0.405 in I.D.(min.) 4.27 mm 0.168 in HT.(max.) 3.81 mm 0.150 in Physical Constant Window Area 0.142 cm 2 28024 c.mils Cross Section Area 0.075 cm 2 0.012 in 2 Path Length 2.180 cm 0.858 in Volume 0.163 cm 3 0.010 in 3 20 12 0.00545 12.05 5.57 21 13 0.00745 11.86 5.38 22 15 0.01084 11.69 5.21 23 18 0.01640 11.55 5.07 24 20 0.02297 11.42 4.94 25 23 0.03325 11.30 4.82 26 26 0.04752 11.19 4.71 27 29 0.06685 11.11 4.63 28 33 0.09588 11.02 4.54 29 37 0.13525 10.95 4.47 30 42 0.19421 10.88 4.40 31 47 0.27347 10.82 4.34 32 52 0.38159 10.77 4.29 33 58 0.53717 10.72 4.24 34 67 0.78228 10.67 4.19 35 75 1.10484 10.63 4.15 Standard MPC Toroidal Series AL value vs. DC Bias 60 55 50 45 AL (nh/n 2 ) 40 35 30 25 H038053A U038053A M038053A S038053A 20 15 10 5 H038025A U038025A W038025A M038025A S038025A 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 NI(AT) www.dongbuem.com 77

0.380 0.188 0.156 (inch) 9.65 4.78 3.96 (mm) 0.380" 0.188" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M038066A 0.156" 26 14 M038014A H038014A S038014A W038014A U038014A 50 26 - - - W038026A - 60 32 M038032A H038032A S038032A W038032A U038032A 75 40 - - S038040A - - 90 48 - H038048A S038048A W038048A U038048A 125 66 M038066A H038066A S038066A - U038066A 147 78 M038078A H038078A - - - 160 84 M038084A H038084A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 10.29 mm 0.405 in I.D.(min.) 4.27 mm 0.168 in HT.(max.) 4.60 mm 0.181 in Physical Constant Window Area 0.142 cm 2 28024 c.mils Cross Section Area 0.094 cm 2 0.015 in 2 Path Length 2.180 cm 0.858 in Volume 0.206 cm 3 0.013 in 3 20 12 0.00608 12.05 6.36 21 13 0.00831 11.86 6.17 22 15 0.01210 11.69 6.00 23 18 0.01830 11.55 5.86 24 20 0.02563 11.42 5.73 25 23 0.03711 11.30 5.61 26 26 0.05303 11.19 5.50 27 29 0.07459 11.11 5.42 28 33 0.10698 11.02 5.33 29 37 0.15092 10.95 5.26 30 42 0.21670 10.88 5.19 31 47 0.30545 10.82 5.13 32 52 0.42579 10.77 5.08 33 58 0.59940 10.72 5.03 34 67 0.87290 10.67 4.98 35 75 1.23282 10.63 4.94 AL value vs. DC Bias 70 65 60 AL (nh/n 2 ) 55 50 45 40 35 30 25 20 15 10 5 H038066A U038066A M038066A S038066A H038032A U038032A W038032A M038032A S038032A 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 NI(AT) 78 POWDER CORES

0.400 0.200 0.156 (inch) 10.16 5.08 3.96 (mm) 0.400" 0.200" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M040066A 0.156" 26 14 M040014A H040014A S040014A W040014A U040014A 50 26 - - - W040026A - 60 32 M040032A H040032A S040032A W040032A U040032A 75 40 - - S040040A - - 90 48 - H040040A S040040A W040040A U040040A 125 66 M040066A H040066A S040066A - U040066A 147 78 M040078A H040078A - - - 160 84 M040084A H040084A - - - Core Dimensions (after Finish) O.D.(max.) 10.80mm 0.425 in I.D.(min.) 4.57 mm 0.180 in HT.(max.) 4.60 mm 0.181 in Physical Constant Window Area 0.164 cm 2 32366 c.mils Cross Section Area 0.100 cm 2 0.016 in 2 Path Length 2.380 cm 0.937 in Volume 0.238 cm 3 0.015 in 3 20 13 0.00668 12.56 6.36 21 15 0.00972 12.37 6.17 22 17 0.01390 12.20 6.00 23 19 0.01958 12.06 5.86 24 22 0.02858 11.93 5.73 25 25 0.04089 11.81 5.61 26 28 0.05789 11.70 5.50 27 31 0.08084 11.62 5.42 28 36 0.11832 11.53 5.33 29 40 0.16541 11.46 5.26 30 45 0.23538 11.39 5.19 31 50 0.32943 11.33 5.13 32 56 0.46488 11.28 5.08 33 63 0.66005 11.23 5.03 34 72 0.95098 11.18 4.98 35 81 1.34982 11.14 4.94 Standard MPC Toroidal Series AL value vs. DC Bias 70 65 60 55 AL (nh/n 2 ) 50 45 40 35 30 25 H040066A U040066A M040066A S040066A 20 15 10 5 H040032A U040032A W040032A M040032A S040032A 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 NI(AT) www.dongbuem.com 79

0.440 0.250 0.156 (inch) 11.18 6.35 3.96 (mm) 0.440" 0.250" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M044053A 0.156" 26 11 M044011A H044011A S044011A W044011A U044011A 50 21 - - - W044021A - 60 26 M044026A H044026A S044026A W044026A U044026A 75 32 - - S044032A - - 90 38 - H044038A S044038A W044038A U044038A 125 53 M044053A H044053A S044053A - U044053A 147 63 M044063A H044063A - - - 160 68 M044068A H044068A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 11.89 mm 0.468 in I.D.(min.) 5.89 mm 0.232 in HT.(max.) 4.72 mm 0.186 in Physical Constant Window Area 0.273 cm 2 53877 c.mils Cross Section Area 0.090 cm 2 0.014 in 2 Path Length 2.690 cm 1.059 in Volume 0.243 cm 3 0.015 in 3 17 11 0.00282 14.34 7.17 18 13 0.00420 14.08 6.91 19 15 0.00611 13.89 6.68 20 17 0.00874 13.65 6.48 21 20 0.01297 13.46 6.29 22 23 0.01882 13.29 6.12 23 26 0.02682 13.15 5.98 24 29 0.03770 13.02 5.85 25 33 0.05401 12.90 5.73 26 37 0.07655 12.79 5.62 27 42 0.10959 12.71 5.54 28 47 0.15457 12.62 5.45 29 52 0.21517 12.55 5.38 30 59 0.30882 12.48 5.31 31 66 0.43513 12.42 5.25 32 73 0.60639 12.37 5.20 AL value vs. DC Bias 55 50 45 AL (nh/n 2 ) 40 35 30 25 20 15 10 5 H044053A U044053A M044053A S044053A H044026A U044026A W044026A M044026A S044026A 0 40 80 120 160 200 240 280 320 360 NI(AT) 80 POWDER CORES

0.500 0.300 0.187 (inch) 12.70 7.62 4.75 (mm) 0.500" 0.300" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M050056A 0.187" 26 12 M050012A H050012A S050012A W050012A U050012A 50 22 - - - W050022A - 60 27 M050027A H050027A S050027A W050027A U050027A 75 34 - - S050034A - - 90 40 - H050040A S050040A W050040A U050040A 125 56 M050056A H050056A S050056A - U050056A 147 67 M050067A H050067A - - - 160 72 M050072A H050072A - - - Core Dimensions (after Finish) O.D.(max.) 13.46 mm 0.530 in I.D.(min.) 6.99 mm 0.275 in HT.(max.) 5.51 mm 0.217 in Physical Constant Window Area 0.383 cm 2 75586 c.mils Cross Section Area 0.114 cm 2 0.018 in 2 Path Length 3.120 cm 1.228 in Volume 0.356 cm 3 0.022 in 3 17 14 0.00406 15.91 7.96 18 16 0.00585 15.65 7.70 19 19 0.00877 15.42 7.47 20 21 0.01223 15.22 7.27 21 24 0.01763 15.03 7.08 22 28 0.02596 14.86 6.91 23 31 0.03622 14.72 6.77 24 35 0.05154 14.59 6.64 25 40 0.07416 14.47 6.52 26 45 0.10546 14.36 6.41 27 50 0.14779 14.28 6.33 28 56 0.20862 14.19 6.24 29 63 0.29530 14.12 6.17 30 71 0.42097 14.05 6.10 31 79 0.58999 13.99 6.04 32 87 0.81864 13.94 5.99 Standard MPC Toroidal Series AL value vs. DC Bias 60 55 50 AL (nh/n 2 ) 45 40 35 30 25 H050056A U050056A M050056A S050056A 20 15 10 5 H050027A U050027A W050027A M050027A S050027A 0 50 100 150 200 250 300 350 400 450 500 NI(AT) www.dongbuem.com 81

0.650 0.400 0.250 (inch) 16.51 10.16 6.35 (mm) 0.650" 0.400" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M065072A 0.250" 26 15 M065015A H065015A S065015A W065015A U065015A 50 29 - - - W065029A - 60 35 M065035A H065035A S065035A W065035A U065035A 75 43 - - S065043A - - 90 52 - H065052A S065052A W065052A U065052A 125 72 M065072A H065072A S065072A - U065072A 147 88 M065088A H065088A - - - 160 92 M065092A H065092A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 17.40 mm 0.685 in I.D.(min.) 9.53 mm 0.375 in HT.(max.) 7.11 mm 0.280 in Physical Constant Window Area 0.713 cm 2 140712 c.mils Cross Section Area 0.192 cm 2 0.030 in 2 Path Length 4.110 cm 1.618 in Volume 0.789 cm 3 0.048 in 3 14 14 0.00256 20.83 10.54 15 16 0.00368 20.46 10.17 16 18 0.00525 20.14 9.85 17 21 0.00770 19.85 9.56 18 24 0.01108 19.53 9.30 19 27 0.01575 19.36 9.07 20 30 0.02207 19.16 8.87 21 34 0.03154 18.97 8.68 22 39 0.04566 18.80 8.51 23 44 0.06493 18.66 8.37 24 49 0.09114 18.53 8.24 25 56 0.13113 18.41 8.12 26 63 0.18648 18.30 8.01 27 70 0.26132 18.22 7.93 28 78 0.36700 18.13 7.84 29 87 0.51505 18.06 7.77 AL value vs. DC Bias 75 70 65 60 AL (nh/n 2 ) 55 50 45 40 35 30 25 20 15 10 5 H065072A U065072A M065072A S065072A H065035A U065035A W065035A M065035A S065035A 0 50 100 150 200 250 300 350 400 450 500 550 600 NI(AT) 82 POWDER CORES

0.680 0.380 0.250 (inch) 17.27 9.65 6.35 (mm) 0.680" 0.380" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M068089A 0.250" 26 19 M068019A H068019A S068019A W068019A U068019A 50 35 - - - W068035A - 60 43 M068043A H068043A S068043A W068043A U068043A 75 53 - - S068053A - - 90 64 - H068064A S068064A W068064A U068064A 125 89 M068089A H068089A S068089A - U068089A 147 105 M068105A H068105A - - - 160 114 M068114A H068114A - - - Core Dimensions (after Finish) O.D.(max.) 18.03 mm 0.710 in I.D.(min.) 9.02 mm 0.355 in HT.(max.) 7.11 mm 0.280 in Physical Constant Window Area 0.576 cm 2 113675 c.mils Cross Section Area 0.232 cm 2 0.036 in 2 Path Length 4.140 cm 1.630 in Volume 0.960 cm 3 0.059 in 3 14 13 0.00250 21.46 10.54 15 15 0.00362 21.09 10.17 16 17 0.00521 20.77 9.85 17 19 0.00733 20.48 9.56 18 22 0.01068 20.22 9.30 19 25 0.01533 19.99 9.07 20 29 0.02243 19.79 8.87 21 32 0.03122 19.60 8.68 22 37 0.04555 19.43 8.51 23 41 0.06362 19.29 8.37 24 46 0.08997 19.16 8.24 25 52 0.12804 19.04 8.12 26 59 0.18366 18.93 8.01 27 66 0.25911 18.85 7.93 28 74 0.36615 18.76 7.84 29 82 0.51050 18.69 7.77 Standard MPC Toroidal Series AL value vs. DC Bias 90 80 70 60 H068089A U068089A M068089A S068089A AL (nh/n 2 ) 50 40 30 20 10 H068043A U068043A W068043A M068043A S068043A 0 50 100 150 200 250 300 350 400 450 500 550 600 NI(AT) www.dongbuem.com 83

0.800 0.500 0.250 (inch) 20.32 12.70 6.35 (mm) 0.800" 0.500" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M080068A 0.250" 26 14 M080014A H080014A S080014A W080014A U080014A 50 26 - - - W080026A - 60 32 M080032A H080032A S080032A W080032A U080032A 75 41 - - S080041A - - 90 49 - H080049A S080049A W080049A U080049A 125 68 M080068A H080068A S080068A - U080068A 147 81 M080081A H080081A - - - 160 87 M080087A H080087A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 21.10 mm 0.831 in I.D.(min.) 12.07 mm 0.475 in HT.(max.) 7.11 mm 0.280 in Physical Constant Window Area 1.140 cm 2 224982 c.mils Cross Section Area 0.226 cm 2 0.035 in 2 Path Length 5.090 cm 2.004 in Volume 1.150 cm 3 0.070 in 3 11 12 0.00115 25.86 11.87 12 14 0.00170 25.36 11.37 13 16 0.00244 24.90 10.91 14 18 0.00347 24.53 10.54 15 21 0.00508 24.16 10.17 16 24 0.00737 23.84 9.85 17 27 0.01042 23.55 9.56 18 31 0.01506 23.29 9.30 19 35 0.02148 23.06 9.07 20 39 0.03019 22.86 8.87 21 45 0.04394 22.67 8.68 22 50 0.06161 22.50 8.51 23 56 0.08697 22.36 8.37 24 63 0.12333 22.23 8.24 25 71 0.17498 22.11 8.12 26 80 0.24924 22.00 8.01 AL value vs. DC Bias 70 65 60 AL (nh/n 2 ) 55 50 45 40 35 30 25 20 15 10 5 H080068A U080068A M080068A S080068A H080032A U080032A W080032A M080032A S080032A 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 NI(AT) 84 POWDER CORES

0.900 0.550 0.300 (inch) 22.86 13.97 7.62 (mm) 0.900" 0.550" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M090090A 0.300" 26 19 M090019A H090019A S090019A W090019A U090019A 50 35 - - - W090035A - 60 43 M090043A H090043A S090043A W090043A U090043A 75 54 - - S090054A - - 90 65 - H090065A S090065A W090065A U090065A 125 90 M090090A H090090A S090090A - U090090A 147 106 M090106A H090106A - - - 160 115 M090115A H090115A - - - Core Dimensions (after Finish) O.D.(max.) 23.62 mm 0.930 in I.D.(min.) 13.39 mm 0.527 in HT.(max.) 8.38 mm 0.330 in Physical Constant Window Area 1.410 cm 2 278267 c.mils Cross Section Area 1.2510.331 cm 2 0.051 in 2 Path Length 5.670 cm 2.232 in Volume 1.880 cm 3 0.115 in 3 11 14 0.00156 28.38 13.14 12 16 0.00225 27.88 12.64 13 18 0.00319 27.42 12.18 14 21 0.00470 27.05 11.81 15 24 0.00674 26.68 11.44 16 27 0.00962 26.36 11.12 17 31 0.01389 26.07 10.83 18 35 0.01974 25.81 10.57 19 39 0.02779 25.58 10.34 20 44 0.03955 25.38 10.14 21 50 0.05668 25.19 9.95 22 56 0.08011 25.02 9.78 23 63 0.11358 24.88 9.64 24 71 0.16135 24.75 9.51 25 80 0.22888 24.63 9.39 26 89 0.32188 24.52 9.28 Standard MPC Toroidal Series AL value vs. DC Bias AL (nh/n 2 ) 100 90 80 70 60 50 40 H090090A U090090A M090090A S090090A 30 20 10 H090043A U090043A W090043A M090043A S090043A 0 50 150 200 250 300 350 400 450 500 550 600 650 700 750 NI(AT) www.dongbuem.com 85

0.920 0.567 0.350 (inch) 23.60 14.40 8.89 (mm) 0.920" 0.567" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M092105A 0.350" 26 22 M092022A H092022A S092022A W092022A U092022A 50 42 - - - W092042A - 60 51 M092051A H092051A S092051A W092051A U092051A 75 63 - - S092063A - - 90 76 - H092076A S092076A W092076A U092076A 125 105 M092105A H092105A S092105A - U092105A 147 124 M092124A H092124A - - - 160 135 M092135A H092135A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 24.30 mm 0.957 in I.D.(min.) 13.77 mm 0.542 in HT.(max.) 9.70 mm 0.382 in Physical Constant Window Area 1.490 cm 2 294055 c.mils Cross Section Area 0.388 cm 2 0.060 in 2 Path Length 5.880 cm 2.315 in Volume 2.280 cm 3 0.139 in 3 10 13 0.00128 29.64 15.04 11 15 0.00185 29.06 14.46 12 17 0.00265 28.56 13.96 13 19 0.00374 28.10 13.50 14 22 0.00546 27.73 13.13 15 25 0.00778 27.36 12.76 16 28 0.01106 27.04 12.44 17 32 0.01590 26.75 12.15 18 36 0.02252 26.49 11.89 19 40 0.03161 26.26 11.66 20 46 0.04585 26.06 11.46 21 51 0.06411 25.87 11.27 22 58 0.09200 25.70 11.10 23 65 0.12996 25.56 10.96 24 73 0.18397 25.43 10.83 25 82 0.26015 25.31 10.71 AL value vs. DC Bias AL (nh/n 2 ) 110 100 90 80 70 60 50 H092105A U092105A M092105A S092105A 40 30 20 10 H092051A U092051A W092051A M092051A S092051A 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 NI(AT) 86 POWDER CORES

1.060 0.580 0.440 (inch) 26.92 14.73 11.18 (mm) 1.060" 0.580" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M106157A 0.440" 26 32 M106032A H106032A S106032A W106032A U106032A 50 62 - - - W106062A - 60 75 M106075A H106075A S106075A W106075A U106075A 75 94 - - S106094A - - 90 113 - H106113A S106113A W106113A U106113A 125 157 M106157A H106157A S106157A - U106157A 147 185 M106185A H106185A - - - 160 201 M106201A H106201A - - - Core Dimensions (after Finish) O.D.(max.) 27.70 mm 1.091 in I.D.(min.) 14.10 mm 0.555 in HT.(max.) 11.99 mm 0.472 in Physical Constant Window Area 1.560 cm 2 307870 c.mils Cross Section Area 0.654 cm 2 0.101 in 2 Path Length 6.350 cm 2.500 in Volume 4.150 cm 3 0.253 in 3 10 13 0.00160 33.04 17.33 11 15 0.00233 32.46 16.75 12 17 0.00333 31.96 16.25 13 20 0.00494 31.50 15.79 14 22 0.00685 31.13 15.42 15 25 0.00977 30.76 15.05 16 29 0.01439 30.44 14.73 17 33 0.02059 30.15 14.44 18 37 0.02906 29.89 14.18 19 42 0.04167 29.66 13.95 20 47 0.05882 29.46 13.75 21 53 0.08365 29.27 13.65 22 60 0.11950 29.10 13.39 23 66 0.16568 28.96 13.25 24 75 0.23732 28.83 13.12 25 84 0.33461 28.71 13.00 Standard MPC Toroidal Series AL value vs. DC Bias AL (nh/n 2 ) 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H106157A U106157A M106157A S106157A H106075A U106075A W106075A M106075A S106075A 0 100 200 300 400 500 600 700 800 900 1000 NI(AT) www.dongbuem.com 87

1.300 0.785 0.420 (inch) 33.02 19.94 10.67 (mm) 1.300" 0.785" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M130127A 0.420" 26 28 M130028A H130028A S130028A W130028A U130028A 50 50 - - - W130050A - 60 61 M130061A H130061A S130061A W130061A U130061A 75 76 - - S130076A - - 90 91 - H130091A S130091A W130091A U130091A 125 127 M130127A H130127A S130127A - U130127A 147 150 M130150A H130150A - - - 160 163 M130163A H130163A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 33.83 mm 1.332 in I.D.(min.) 19.30 mm 0.760 in HT.(max.) 11.61 mm 0.457 in Physical Constant Window Area 2.930 cm 2 578243 c.mils Cross Section Area 0.672 cm 2 0.104 in 2 Path Length 8.150 cm 3.209 in Volume 5.480 cm 3 0.334 in 3 8 15 0.00117 40.51 18.29 9 17 0.00167 39.79 17.57 10 19 0.00235 39.17 16.95 11 22 0.00343 38.59 16.37 12 25 0.00492 38.09 15.87 13 28 0.00694 37.63 15.41 14 32 0.01001 37.26 15.04 15 36 0.01413 36.89 14.67 16 41 0.02043 36.57 14.35 17 46 0.02883 36.28 14.06 18 52 0.04103 36.02 13.80 19 58 0.05780 35.79 13.57 20 65 0.08171 35.59 13.37 21 74 0.11733 35.40 13.18 22 83 0.16606 35.23 13.01 23 92 0.23200 35.09 12.87 AL value vs. DC Bias 130 120 110 AL (nh/n 2 ) 100 90 80 70 60 50 H130127A U130127A M130127A S130127A 40 30 20 10 H130061A U130061A W130061A M130061A S130061A 0 100 200 300 400 500 600 700 800 900 1000 1200 1300 NI(AT) 88 POWDER CORES

1.350 0.580 0.440 (inch) 34.29 23.37 8.89 (mm) 1.350" 0.580" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M135079A 0.440" 26 16 M135016A H135016A S135016A W135016A U135016A 50 31 - - - W135031A - 60 38 M135038A H135038A S135038A W135038A U135038A 75 47 - - S135047A - - 90 57 - H135057A S135057A W135057A U135057A 125 79 M135079A H135079A S135079A - U135079A 147 93 M135093A H135093A - - - 160 101 M135101A H135101A - - - Core Dimensions (after Finish) O.D.(max.) 35.10 mm 1.382 in I.D.(min.) 22.56 mm 0.888 in HT.(max.) 9.83 mm 0.387 in Physical Constant Window Area 4.010 cm 2 791384 c.mils Cross Section Area 0.454 cm 2 0.070 in 2 Path Length 8.950 cm 3.524 in Volume 4.060 cm 3 0.248 in 3 8 18 0.00119 41.78 16.51 9 20 0.00167 41.06 15.79 10 23 0.00243 40.44 15.17 11 26 0.00346 39.86 14.59 12 30 0.00503 39.36 14.09 13 34 0.00719 38.90 13.63 14 38 0.01014 38.53 13.26 15 43 0.01440 38.16 12.89 16 48 0.02040 37.84 12.57 17 54 0.02886 37.55 12.28 18 61 0.04105 37.22 12.02 19 69 0.05866 37.06 11.79 20 77 0.08256 36.86 11.59 21 87 0.11766 36.67 11.40 22 98 0.16725 36.50 11.23 23 109 0.23445 36.36 11.09 Standard MPC Toroidal Series AL value vs. DC Bias 80 70 AL (nh/n 2 ) 60 50 40 30 H135079A U135079A M135079A S135079A 20 10 H135038A U135038A W135038A M135038A S135038A 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 NI(AT) www.dongbuem.com 89

1.410 0.880 0.412 (inch) 35.81 22.35 10.46 (mm) 1.410" 0.880" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M141117A 0.412" 26 24 M141024A H141024A S141024A W141024A U141024A 50 47 - - - W141047A - 60 56 M141056A H141056A S141056A W141056A U141056A 75 70 - - S141070A - - 90 84 - H141084A S141084A W141084A U141084A 125 117 M141117A H141117A S141117A - U141117A 147 138 M141138A H141138A - - - 160 150 M141150A H141150A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 36.63 mm 1.442 in I.D.(min.) 21.54 mm 0.848 in HT.(max.) 11.28 mm 0.447 in Physical Constant Window Area 3.640 cm 2 718363 c.mils Cross Section Area 0.678 cm 2 0.105 in 2 Path Length 8.980 cm 3.535 in Volume 6.088 cm 3 0.372 in 3 9 19 0.00187 42.59 17.31 10 22 0.00273 41.97 16.69 11 25 0.00390 41.39 16.11 12 28 0.00551 40.89 15.61 13 32 0.00794 40.43 15.15 14 36 0.01128 40.06 14.78 15 41 0.01611 39.69 14.41 16 46 0.02295 39.37 14.09 17 52 0.03262 39.08 13.80 18 58 0.04581 38.82 13.54 19 65 0.06485 38.59 13.31 20 73 0.09186 38.39 13.11 21 82 0.13015 38.20 12.92 22 93 0.18627 38.03 12.75 23 103 0.26001 37.89 12.61 24 116 0.36910 37.76 12.48 AL value vs. DC Bias 120 110 100 AL (nh/n 2 ) 90 80 70 60 50 H141117A U141117A M141117A S141117A 40 30 20 10 H141056A U141056A W141056A M141056A S141056A 0 100 200 300 400 500 600 700 800 900 1000 1200 1300 1400 NI(AT) 90 POWDER CORES

1.570 0.950 0.570 (inch) 39.88 24.13 14.48 (mm) 1.570" 0.950" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M135079A 0.570" 26 35 M157035A H157035A S157035A W157035A U157035A 50 67 - - - W157067A - 60 81 M157081A H157081A S157081A W157081A U157081A 75 101 - - S157101A - - 90 121 - H157121A S157121A W157121A U157121A 125 168 M157168A H157168A S157168A - U157168A 147 198 M157198A H157198A - - - 160 215 M157215A H157215A - - - Core Dimensions (after Finish) O.D.(max.) 40.72mm 1.603 in I.D.(min.) 23.30 mm 0.917 in HT.(max.) 15.37 mm 0.605 in Physical Constant Window Area 4.270 cm 2 842695 c.mils Cross Section Area 1.072 cm 2 0.166 in 2 Path Length 9.840 cm 3.874 in Volume 10.500 cm 3 0.641 in 3 9 21 0.00263 46.68 21.33 10 24 0.00379 46.06 20.71 11 27 0.00537 45.48 20.13 12 31 0.00778 44.98 19.63 13 35 0.01107 44.52 19.17 14 39 0.01557 44.15 18.80 15 44 0.02204 43.78 18.43 16 50 0.03179 43.46 18.11 17 56 0.04477 43.17 17.82 18 63 0.06341 42.91 17.56 19 71 0.09027 42.68 17.33 20 80 0.12830 42.48 17.13 21 90 0.18204 42.29 16.94 22 101 0.25780 42.12 16.77 23 112 0.36031 41.98 16.63 24 126 0.51094 41.85 16.50 Standard MPC Toroidal Series AL value vs. DC Bias AL (nh/n 2 ) 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H157168A U157168A M157168A S157168A H157081A U157081A W157081A M157081A S157081A 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 NI(AT) www.dongbuem.com 91

1.840 0.950 0.710 (inch) 46.74 24.13 18.03 (mm) 1.840" 0.950" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M184281A 0.710" 26 59 M184059A H184059A S184059A W184059A U184059A 50 112 - - - W184112A - 60 135 M184135A H184135A S184135A W184135A U184135A 75 169 - - S184169A - - 90 202 - H184202A S184202A W184202A U184202A 125 281 M184281A H184281A S184281A - U184281A 147 330 M184330A H184330A - - - 160 360 M184360A H184360A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 47.63 mm 1.875 in I.D.(min.) 23.32 mm 0.918 in HT.(max.) 18.92 mm 0.745 in Physical Constant Window Area 4.270 cm 2 842695 c.mils Cross Section Area 1.990 cm 2 0.308 in 2 Path Length 10.740 cm 4.228 in Volume 21.300 cm 3 1.300 in 3 9 21 0.00339 53.59 24.88 10 24 0.00489 52.97 24.26 11 27 0.00693 52.39 23.68 12 31 0.01004 51.89 23.18 13 35 0.01429 51.43 22.72 14 39 0.02009 51.06 22.35 15 44 0.02844 50.69 21.98 16 50 0.04102 50.37 21.66 17 56 0.05777 50.08 21.37 18 63 0.08183 49.82 21.11 19 71 0.11649 49.59 20.88 20 80 0.16557 49.39 20.68 21 90 0.23493 49.20 20.49 22 101 0.33269 49.03 20.32 23 112 0.46498 48.89 20.18 24 126 0.65936 48.76 20.05 AL value vs. DC Bias 300 280 260 240 AL (nh/n 2 ) 220 200 180 160 140 120 100 80 60 40 20 H184281A U184281A M184281A S184281A H184135A U184135A W184135A M184135A S184135A 0 150 300 450 600 750 900 1050 1200 1350 1500 1650 NI(AT) 92 POWDER CORES

1.840 1.130 0.600 (inch) 46.74 28.70 15.24 (mm) 1.840" 1.130" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M184178A 0.600" 26 37 M184037A H184037A S184037A W184037A U184037A 50 70 - - - W184070A - 60 86 M184086A H184086A S184086A W184086A U184086A 75 107 - - S184107A - - 90 128 - H184128A S184128A W184128A U184128A 125 178 M184178A H184178A S184178A - U184178A 147 210 M184210A H184210A - - - 160 228 M184228A H184228A - - - Core Dimensions (after Finish) O.D.(max.) 47.63mm 1.875 in I.D.(min.) 27.89 mm 1.098 in HT.(max.) 16.13 mm 0.635 in Physical Constant Window Area 6.110 cm 2 1205824 c.mils Cross Section Area 1.340 cm 2 0.208 in 2 Path Length 11.630 cm 4.579 in Volume 15.580 cm 3 0.951 in 3 9 26 0.00352 53.59 22.09 10 29 0.00495 52.97 21.47 11 33 0.00709 52.39 20.89 12 37 0.01002 51.89 20.39 13 42 0.01435 51.43 19.93 14 47 0.02026 51.06 19.56 15 54 0.02920 50.69 19.19 16 60 0.04118 50.37 18.87 17 68 0.05870 50.08 18.58 18 76 0.08260 49.82 18.32 19 86 0.11806 49.59 18.09 20 96 0.16623 49.39 17.89 21 108 0.23587 49.20 17.70 22 121 0.33348 49.03 17.53 23 135 0.46894 48.89 17.39 24 152 0.66552 48.76 17.26 Standard MPC Toroidal Series AL value vs. DC Bias AL (nh/n 2 ) 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H184178A U184178A M184178A S184178A H184086A U184086A W184086A M184086A S184086A 0 150 300 450 600 750 900 1050 1200 1350 1500 1650 1800 NI(AT) www.dongbuem.com 93

2.000 12.50 0.530 (inch) 50.80 31.75 13.46 (mm) 2.000" 12.50" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M200152A 0.530" 26 32 M200032A H200032A S200032A W200032A U200032A 50 60 - - - W200060A - 60 73 M200073A H200073A S200073A W200073A U200073A 75 91 - - S200091A - - 90 109 - H200109A S200109A W200109A U200109A 125 152 M200152A H200152A S200152A - U200152A 147 179 M200179A H200179A - - - 160 195 M200195A H200195A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 51.69 mm 2.035 in I.D.(min.) 30.94 mm 1.218 in HT.(max.) 14.35 mm 0.565 in Physical Constant Window Area 7.500 cm 2 1480144 c.mils Cross Section Area 1.251 cm 2 0.194 in 2 Path Length 12.730 cm 5.012 in Volume 15.930 cm 3 0.972 in 3 9 29 0.00373 57.65 20.31 10 33 0.00535 57.03 19.69 11 37 0.00756 56.45 19.11 12 42 0.01082 55.95 18.61 13 47 0.01527 55.49 18.15 14 53 0.02173 55.12 17.78 15 60 0.03086 54.75 17.41 16 67 0.04373 54.43 17.09 17 76 0.06239 54.14 16.80 18 85 0.08785 53.88 16.54 19 95 0.12402 53.65 16.31 20 107 0.17620 53.45 16.11 21 120 0.24923 53.26 15.92 22 135 0.35381 53.09 15.75 23 150 0.49549 52.95 15.61 24 168 0.69950 52.82 15.48 AL value vs. DC Bias AL (nh/n 2 ) 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H184281A U184281A M184281A S184281A H184135A U184135A W184135A M184135A S184135A 0 150 300 450 600 750 900 1050 1200 1350 1500 1650 1800 1950 NI(AT) 94 POWDER CORES

2.250 10.39 0.600 (inch) 57.15 26.39 15.24 (mm) 2.250" 10.39" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M225287A 0.600" 26 60 M225060A H225060A S225060A W225060A U225060A 50 115 - - - W225115A - 60 138 M225138A H225138A S225138A W225138A U225138A 75 172 - - S225172A - - 90 207 - H225207A S225207A W225207A U225207A 125 287 M225287A H225287A S225287A - U225287A 147 306 M225306A H225306A - - - 160 333 M225333A H225333A - - - Core Dimensions (after Finish) O.D.(max.) 58.00 mm 2.283 in I.D.(min.) 25.60 mm 1.008 in HT.(max.) 16.10 mm 0.634 in Physical Constant Window Area 5.140 cm 2 1014392 c.mils Cross Section Area 2.290 cm 2 0.355 in 2 Path Length 12.500 cm 4.921 in Volume 28.600 cm 3 1.745 in 3 9 23 0.00386 63.96 22.06 10 26 0.00551 63.34 21.44 11 30 0.00800 62.76 20.86 12 34 0.01144 62.26 20.36 13 39 0.01655 61.80 19.90 14 43 0.02303 61.43 19.53 15 49 0.03292 61.06 19.16 16 55 0.04690 60.74 18.84 17 62 0.06649 60.45 18.55 18 70 0.09451 60.19 18.29 19 78 0.13302 59.96 18.06 20 88 0.18930 59.76 17.86 21 99 0.26861 59.57 17.67 22 111 0.38004 59.40 17.50 23 124 0.53509 59.26 17.36 24 138 0.75063 59.13 17.23 Standard MPC Toroidal Series AL value vs. DC Bias 300 280 260 AL (nh/n 2 ) 240 220 200 180 160 140 120 100 80 60 40 20 H225287A U225287A M225287A S225287A H225138A U225138A W225138A M225138A S225138A 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 NI(AT) www.dongbuem.com 95

2.250 14.00 0.550 (inch) 57.15 35.56 13.97 (mm) 2.250" 14.00" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M225156A 0.550" 26 33 M225033A H225033A S225033A W225033A U225033A 50 62 - - - W225062A - 60 75 M225075A H225075A S225075A W225075A U225075A 75 94 - - S225094A - - 90 112 - H225112A S225112A W225112A U225112A 125 156 M225156A H225156A S225156A - U225156A 147 185 M225185A H225185A - - - 160 200 M225200A H225200A - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 58.00 mm 2.283 in I.D.(min.) 34.70 mm 1.366 in HT.(max.) 14.86 mm 0.585 in Physical Constant Window Area 9.480 cm 2 1870902 c.mils Cross Section Area 1.444 cm 2 0.224 in 2 Path Length 14.300 cm 5.630 in Volume 20.650 cm 3 1.260 in 3 8 29 0.00317 64.68 21.54 9 33 0.00455 63.96 20.82 10 37 0.00643 63.34 20.20 11 42 0.00920 62.76 19.62 12 48 0.01326 62.26 19.12 13 54 0.01881 61.80 18.66 14 60 0.02637 61.43 18.29 15 68 0.03750 61.06 17.92 16 76 0.05319 60.74 17.60 17 85 0.07481 60.45 17.31 18 96 0.10638 60.19 17.05 19 108 0.15117 59.96 16.82 20 120 0.21187 59.76 16.62 21 135 0.30060 59.57 16.43 22 152 0.42713 59.40 16.26 23 169 0.59855 59.26 16.12 AL value vs. DC Bias AL (nh/n 2 ) 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H225156A U225156A M225156A S225156A H225075A U225075A W225075A M225075A S225075A 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 NI(AT) 96 POWDER CORES

2.441 1.283 0.984 (inch) 62.00 32.60 25.00 (mm) 2.441" 1.283" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M244402A 0.984" 26 83 M244083A H244083A S244083A W244083A U244083A 50 161 - - - W244161A - 60 192 M244192A H244192A S244192A W244192A U244192A 75 241 - - S244241A - - 90 289 - H244289A S244289A W244289A U244289A 125 402 M244402A H244402A S244402A - U244402A 147 - - - - - - 160 - - - - - - Core Dimensions (after Finish) O.D.(max.) 63.10 mm 2.484 in I.D.(min.) 31.37 mm 1.235 in HT.(max.) 26.27 mm 1.034 in Physical Constant Window Area 7.730 cm 2 1525535 c.mils Cross Section Area 3.675 cm 2 0.570 in 2 Path Length 14.370 cm 5.657 in Volume 52.800 cm 3 3.222 in 3 8 26 0.00454 69.78 32.95 9 30 0.00656 69.06 32.23 10 33 0.00914 68.44 31.61 11 38 0.01326 67.86 31.03 12 43 0.01894 67.36 30.53 13 48 0.02659 66.90 30.07 14 54 0.03769 66.52 29.69 15 61 0.05373 66.16 29.33 16 68 0.07572 65.84 29.01 17 77 0.10771 65.54 28.71 18 87 0.15399 65.28 28.45 19 97 0.21630 65.06 28.23 20 108 0.30305 64.86 28.03 21 123 0.35739 64.66 27.83 22 137 0.61477 64.50 27.67 - - - - - Standard MPC Toroidal Series AL value vs. DC Bias 450 400 AL (nh/n 2 ) 350 300 250 200 H244402A U244402A M244402A S244402A 150 100 50 H244192A U244192A W244192A M244192A S244192A 0 200 400 600 800 1000 1200 1600 1800 2000 2200 NI(AT) www.dongbuem.com 97

2.917 1.783 1.378 (inch) 74.10 49.30 35.00 (mm) 2.917" 1.783" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M292429A 1.378" 26 89 M292089A H292089A S292089A W292089A U292089A 50 171 - - - W292171A - 60 204 M292204A H292204A S292204A W292204A U292204A 75 257 - - S292257A - - 90 309 - H292309A S292309A W292309A U292309A 125 429 M292429A H292429A S292429A - U292429A 147 - - - - - - 160 - - - - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 75.20 mm 2.961 in I.D.(min.) 44.07 mm 1.735 in HT.(max.) 36.27 mm 1.428 in Physical Constant Window Area 15.250 cm 2 3009310 c.mils Cross Section Area 5.040 cm 2 0.781 in 2 Path Length 18.380 cm 7.24 in Volume 92.640 cm 3 5.653 in 3 10 48 0.00165 80.55 41.62 11 54 0.00234 79.97 41.04 12 61 0.00330 79.47 40.54 13 69 0.00469 79.01 40.08 14 77 0.00646 78.63 39.70 15 86 0.00901 78.27 39.34 16 97 0.01268 77.95 39.02 17 109 0.01797 77.64 38.71 18 123 0.02540 77.38 38.45 19 137 0.03500 77.16 38.23 20 153 0.04848 76.96 38.03 21 173 0.06977 76.76 37.83 22 194 0.09715 76.60 37.67 23 239 0.18051 76.34 37.41 24 243 0.19014 76.32 37.39 25 297 0.34442 76.12 37.19 AL value vs. DC Bias 450 400 AL (nh/n 2 ) 350 300 250 200 H292429A U292429A M292429A S292429A 150 100 50 H292429A U292429A M292429A S292429A 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 NI(AT) 98 POWDER CORES

3.063 1.938 0.500 (inch) 77.80 49.23 12.70 (mm) 3.063" 1.938" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M306142A 0.500" 26 30 M306030A H306030A S306030A W306030A U306030A 50 56 - - - W306056A - 60 68 M306068A H306068A S306068A W306068A U306068A 75 84 - - S306084A - - 90 102 - H306102A S306102A W306102A U306102A 125 142 M306142A H306142A S306142A - U306142A 147 - - - - - - 160 - - - - - - Core Dimensions (after Finish) O.D.(max.) 78.90 mm 3.106 in I.D.(min.) 48.20 mm 1.898 in HT.(max.) 13.84 mm 0.545 in Physical Constant Window Area 17.990 cm 2 3550371 c.mils Cross Section Area 1.777 cm 2 0.275 in 2 Path Length 19.600 cm 7.717 in Volume 34.700 cm 3 2.118 in 3 8 41 0.00493 109.55 24.46 9 47 0.00713 108.83 23.74 10 53 0.01015 108.21 23.12 11 60 0.01447 107.63 22.54 12 67 0.02038 107.13 22.04 13 76 0.02915 106.67 21.58 14 84 0.04065 106.30 21.21 15 95 0.05768 105.93 20.84 16 106 0.08169 105.61 20.52 17 119 0.11532 105.32 20.23 18 134 0.16350 105.06 19.97 19 150 0.23118 104.83 19.74 20 168 0.32660 104.63 19.54 21 188 0.46097 104.44 19.35 22 211 0.65286 104.27 19.18 23 235 0.91645 104.13 19.04 Standard MPC Toroidal Series AL value vs. DC Bias 150 140 130 AL (nh/n 2 ) 120 110 100 90 80 70 60 50 40 30 20 10 H306142A U306142A M306142A S306142A H306142A U306142A M306142A S306142A 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 NI(AT) www.dongbuem.com 99

3.063 1.938 0.625 (inch) 77.80 49.23 15.88 (mm) 3.063" 1.938" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M306178A 0.625" 26 37 M306037A H306037A S306037A W306037A U306037A 50 71 - - - W184112A - 60 85 M306085A H306085A S306085A W306085A U306085A 75 107 - - S306107A - - 90 128 - H306128A S306128A W306128A U306128A 125 178 M306178A H306178A S306178A - U306178A 147 - - - - - - 160 - - - - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 78.90 mm 3.106 in I.D.(min.) 48.20 mm 1.898 in HT.(max.) 17.02 mm 0.670 in Physical Constant Window Area 17.990 cm 2 3550371 c.mils Cross Section Area 2.270 cm 2 0.352 in 2 Path Length 19.600 cm 7.717 in Volume 45.300 cm 3 2.764 in 3 8 41 0.00547 85.58 23.70 9 47 0.00791 84.86 22.98 10 53 0.01125 84.24 22.36 11 60 0.01604 83.66 21.78 12 67 0.02260 83.16 21.28 13 76 0.03233 82.70 20.82 14 84 0.04508 82.33 20.45 15 95 0.06396 81.96 20.08 16 106 0.09058 81.64 19.76 17 119 0.12789 81.35 19.47 18 134 0.18131 81.09 19.21 19 150 0.25637 80.86 18.98 20 168 0.36218 80.66 18.78 21 188 0.51119 80.47 18.59 22 211 0.72399 80.30 18.42 23 235 1.01629 80.16 18.28 AL value vs. DC Bias AL (nh/n 2 ) 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 H306178A U306178A M306178A S306178A H306085A U306085A W306085A M306085A S306085A 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 NI(AT) 100 POWDER CORES

4.000 2.250 0.535 (inch) 101.60 57.15 13.59 (mm) 4.000" 2.250" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M400092A 0.535" 26 40 M400040A H400040A S400040A W400040A U400040A 50 77 - - - W400077A - 60 92 M400092A H400092A S400092A W400092A U400092A 75 - - - - - - 90 - - - - - - 125 - - - - - - 147 - - - - - - 160 - - - - - - Core Dimensions (after Finish) O.D.(max.) 102.87 mm 4.050 in I.D.(min.) 55.75 mm 2.195 in HT.(max.) 14.86 mm 0.585 in Physical Constant Window Area 24.410 cm 2 4817375 c.mils Cross Section Area 2.970 cm 2 0.460 in 2 Path Length 24.270 cm 9.555 in Volume 72.120 cm 3 4.401 in 3 8 47 0.00744 109.55 21.54 9 54 0.01079 108.83 20.82 10 63 0.01588 108.21 20.20 11 72 0.02285 107.63 19.62 12 81 0.03243 107.13 19.12 13 91 0.04594 106.67 18.66 14 103 0.06561 106.30 18.29 15 117 0.09350 105.93 17.92 16 132 0.13389 105.61 17.60 17 147 0.18750 105.32 17.31 18 167 0.26819 105.06 17.05 19 187 0.37934 104.83 16.82 20 210 0.53734 104.63 16.62 21 239 0.77132 104.44 16.43 22 268 1.09144 104.27 16.26 - - - - - Standard MPC Toroidal Series AL value vs. DC Bias AL (nh/n 2 ) 120 110 100 90 80 70 60 50 40 30 20 10 H400092A U400092A W400092A M400092A S400092A 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 NI(AT) www.dongbuem.com 101

4.000 2.250 0.650 (inch) 101.60 57.15 16.51 (mm) 4.000" 2.250" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux M400112A 0.650" 26 47 M400047A H400047A S400047A W400047A U400047A 50 90 - - - W400090A - 60 112 M400112A H400112A S400112A W400112A U400112A 75 - - - - - - 90 - - - - - - 125 - - - - - - 147 - - - - - - 160 - - - - - - POWDER CORES Core Dimensions (after Finish) O.D.(max.) 102.87 mm 4.050 in I.D.(min.) 55.75 mm 2.195 in HT.(max.) 17.8 mm 0.750 in Physical Constant Window Area 24.410 cm 2 4817375 c.mils Cross Section Area 3.520 cm 2 0.546in 2 Path Length 24.270 cm 9.555 in Volume 85.500 cm 3 5.218 in 3 8 47 0.00801 109.55 24.46 9 54 0.01161 108.83 23.74 10 63 0.01708 108.21 23.12 11 72 0.02459 107.63 22.54 12 81 0.03489 107.13 22.04 13 91 0.04943 106.67 21.58 14 103 0.07060 106.30 21.21 15 117 0.10061 105.93 20.84 16 132 0.14406 105.61 20.52 17 147 0.20176 105.32 20.23 18 167 0.28858 105.06 19.97 19 187 0.40817 104.83 19.74 20 210 0.57818 104.63 19.54 21 239 0.82994 104.44 19.35 22 268 1.17439 104.27 19.1 - - - - - AL value vs. DC Bias AL (nh/n 2 ) 120 110 100 90 80 70 60 50 40 30 20 10 H400112A U400112A W400112A M400112A S400112A 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 NI(AT) 102 POWDER CORES

5.218 3.094 0.800 (inch) 132.54 78.58 20.32 (mm) 5.218" 3.094" Core Information Perm. (μ) AL value (nh/n2) MPP High Flux Sendust Power Flux Ultra Flux 0.800" 26 54 M522054A H522054A S522054A W522054A U522054A 50 - - - - - - 1 60 112 M522124A H522124A S522124A W522124A U522124A 75 - - - - - - M522124A 90 - - - - - - 125 259 M522259A H522259A S522259A - U522259A 147 - - - - - - 160 - - - - - - Core Dimensions (after Finish) O.D.(max.) 133.96 mm 5.274 in I.D.(min.) 77.04 mm 3.033 in HT.(max.) 21.72 mm 0.855 in Physical Constant Window Area 46.61 cm 2 9199089 c.mils Cross Section Area 5.34 cm 2 0.828 in 2 Path Length 32.42 cm 12.77 in Volume 173.12 cm 3 10.566 in 3 8 9 10 11 N/A 12 13 14 15 16 17 18 19 N/A 20 21 22 Standard MPC Toroidal Series AL value vs. DC Bias 280 260 240 220 200 180 H522259A U522259A M522259A S522259A AL (nh/n 2 ) 160 140 120 100 80 60 40 20 H522124A U522124A W522124A M522124A S522124A 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 NI(AT) www.dongbuem.com 103

5 Special Core Data

Special Height Up/Down Core Series Introduction (3.56mm x 1.78mm x 1.52mm) 0.140" 0.070" POWDER CORES Increase H.T.(mm) 0.060" Decrease H.T.(mm) We, Dongbu can supply various special height core series depending on our customer request. Actually, a lot of customers would like to get increasing height cores or decreasing height cores in order to design their drawing. It is very useful in the case of replacing two pieces core by one cores which is the increasing height core. As increasing height, customer can get low-cost cores and also we can get much profit than common cores. If you need more information on it, please feel free to contact us. 106 POWDER CORES

Special Sendust 90μ Core Series OD ID HT Features 1. Low Core Losses 2. Excellent DC - Bias Characteristics 3. Excellent Frequency Characteristics 4. Low Price Permeability (μ) AL-Value (nh/n 2 ) Magnetic Path length (cm) Cross Section Area (cm 2 ) OD(max.) (mm) Core Dimension ID(min.) (mm) HT(max.) (mm) S041055A 90 55 2.285 0.102 10.15 5.00 4.20 S054060A 90 60 3.200 0.171 13.72 7.32 5.40 S070070A 90 70 4.205 0.281 17.90 9.70 7.10 Special Core Data S082070A 90 70 5.095 0.278 20.75 12.40 6.90 S082120A 90 120 5.095 0.484 20.75 12.40 12.30 S084070A 90 70 5.671 0.358 21.40 11.70 7.60 S109090A 90 90 6.307 0.509 27.70 14.00 7.60 S109150A 90 150 6.307 0.850 27.70 14.00 12.70 S136146A 90 146 8.105 1.055 34.59 18.64 13.50 S136183A 90 183 8.105 1.328 34.59 18.64 17.00 Above mentioned core dimensions are for nominal bare core before coating Cores are supplied with 0.04mm~0.06mm nominal epoxy coating. Finish coating material : Epoxy(UL94V-0), All core colors are black Inductance tolerance are 8% from nominal inductance In addition to cores listed above, customer specifications are also available www.dongbuem.com 107

Dongbu Special Shape Core Data High Flux Sendust POWDER CORES Power Flux Special Shape Core Series Features 1. Large energy storage capacity 2. Low core losses at elevated frequency 3. Exellent DC-Bias inductance features 4. Good temperature stability Applications 1. Choke coils for large current 2. Flyback transformers 3. PFC reactors 4. High inductance choke coils 5.PV, UPS 6.EV, Telecom 108 POWDER CORES

EE Core series Identification of EE Core Series S 43 21 150 C EE Core shape : EE means EE type cores Perm.(u) : permeability code(b:26, J:40, C:60, E:90) Inductance : apparent inductance [mh] factor for 1000turns Size : horizontal axis of cores [mm] Size : vertical axis of cores [mm] Material : material code(w, H, S, U) Where, S : Sendust Material [Fe / Al / Si] 43 : 43mm 21 : 21mm 150 : 150mH/N 2 at 1000turns Dimension specification of EE Core series [Fig.1] mechanical out lines [unit : mm] about EE core series B A F E C M Special Core Data L D [Table 2] shows out dimension specification of EE core series P/N 1908 EE Dimensions [mm] Cross Path AL value(nh/n 2 )±12% section Length Area A B C D (min) E (min) F M (min) (cm) (cm 2 ) 26μ 40μ 60μ 90μ 19.3 8.1 4.8 5.5 13.9 4.8 4.7 4.01 0.23 26 35 48 69 2510 EE 25.1 9.6 6.5 6.2 18.8 6.1 6.3 4.85 0.39 39 52 70 100 3515 EE 34.5 14.1 9.3 9.6 25.3 9.3 7.9 6.94 0.84 56 75 102 146 4117 EE 40.9 16.5 12.5 10.4 28.3 12.5 7.9 7.75 1.52 88 119 163 234 4321 EE 42.8 21.1 10.8 15 30.4 11.7 9.5 9.84 1.28 56 76 105 151 4321 EE 42.8 21.1 15.4 15 30.4 11.7 9.5 9.84 3.5 80 108 150 217 5528 EE 54.9 27.6 20.6 18.5 37.5 16.8 10.3 12.3 3.5 116 157 219-6533 EE 65.1 32.5 27 22.2 44.2 19.7 12.1 14.7 5.4 162 230 300-7228 EE 72.4 27.9 19 17.8 52.6 19.1 16.9 13.7 3.68 130 173 236-8038 EE 80 38.1 19.8 28.1 59.3 19.8 19.8 18.5 3.89 103 145 190 - www.dongbuem.com 109

EQ Core series Identification of EQ Core Series H 26 19 165 C EQ Core shape : EQ means EQ type cores Perm.(u) : permeability code(b:26, J:40, C:60) Inductance : apparent inductance [mh] factor for 1000turns Size : horizontal axis of cores [mm] Size : vertical axis of cores [mm] Material : material code(w, H, S, U) Where, H : High Flux Material [Fe / Ni] 26 : 26mm 19 : 19mm 165 : 165mH/N 2 at 1000turns Dimension specification of EQ Core series [Fig.1] mechanical out lines [unit : mm] about EQ core series POWDER CORES A ΦD B C F ΦE [Table 2] shows out dimension specification of EQ core series P/N 2014 EQ Dimensions [mm] Cross Path AL value(nh/n 2 )±12% section Length Area A B C D (min) E F (cm) (cm 2 ) 26μ 40μ 60μ 20.5 14 8.1 8.8 18 5.7 4.52 0.608 44 68 101 2014 EQ 20.5 14 10.1 8.8 18 7.7 5.32 0.608 37 57 86 2619 EQ 26.5 19 10.1 12 22.6 6.8 5.47 1.198 72 110 165 2619 EQ 26.5 19 12.4 12 22.6 9.1 6.39 1.198 61 94 141 3222 EQ 32 22 10.3 13.5 27.6 6.6 6.03 1.523 83 127 190 3222 EQ 32 22 15.2 13.5 27.6 11.5 7.99 1.523 62 96 144 3626 EQ 36 26 17.4 14.4 32 13.4 9.47 1.808 62 96 144 4128 EQ 41.5 28 19.9 14.9 36.5 15.4 11.52 1.997 57 87 131 5032 EQ 50 32 25 20 44 19.5 13.34 3.141 77 118 178 6542 EQ 65 42 30 26 57.2 22.8 16.53 5.309 105 161 242 110 POWDER CORES

Block Core series Identification of Block Core Series W 80 30 20 C Dimension specification of Block Core series [Fig.1] mechanical out lines [unit : mm] about Block core series Perm.(u) : permeability code(b:26, J:40, C:60 E:90) Size : height of cores [mm] Size : horizontal axis of cores [mm] Size : vertical axis of cores [mm] Material : material code(w, H, S, U) Where, W : Power Flux Material [Fe / Si] 80 : 80mm 30 : 30mm 20 : 20mm C : permeability 60 A B C Special Core Data [Table 2] shows out dimension specification of Block core series P/N 503015 A 50.5 Dimensions [mm] Cross Path AL value(nh/n 2 )±12% section Length Area B C (cm) (cm 2 ) 26μ 40μ 60μ 90μ 30.3 15 18.71 4.5 95 121 181 272 503020 50.5 30.3 20 18.28 6 130 165 247 371 603015 60.5 30.3 15 22.71 4.5 79 100 149 224 603020 60.5 30.3 20 22.28 6 107 135 203 305 703015 70.5 30.3 15 26.71 4.5 67 85 127 191 703020 70.5 30.3 20 26.28 6 91 115 172 258 704015 70.5 40.3 15 26.71 6 73 113 169 254 704020 70.5 40.3 20 26.28 8 99 153 230 344 803015 80.5 30.3 15 30.71 4.5 58 74 110 166 803020 80.5 30.3 20 30.28 6 78 100 149 224 804015 80.5 40.3 15 30.71 6 64 98 147 221 804020 80.5 40.3 20 30.28 8 86 133 199 299 www.dongbuem.com 111

UU Core series Identification of UU Core Series S 55 28 108 C UU Core shape : UU means UU type cores Perm.(u) : permeability code(b:26, J:40, C:60, E:90) Inductance : apparent inductance [mh] factor for 1000turns Size : horizontal axis of cores [mm] Size : vertical axis of cores [mm] Material : material code(w, H, S, U) Where, S : Sendust Material [Fe / Al / Si] 55 : 55mm 28 : 28mm 108 : 108mH/N 2 at 1000turns Dimension specification of UU Core series [Fig.1] mechanical out lines [unit : mm] about UU core series POWDER CORES A B L E C D [Table 2] shows out dimension specification of UU core series P/N 3111 UU Dimensions [mm] Cross Path AL value(nh/n 2 )±12% section Length Area A B C D E L (cm) (cm 2 ) 26μ 40μ 60μ 90μ 31.2 11.2 12.1 2.8 14.2 8.3 6.65 1 49 75 113 170 4111 UU 40.6 11.2 12.1 2.8 23.9 8.4 8.51 1.01 38 60 90 134 5528 UU 54.9 27.6 23.2 17 33.9 10.5 16.87 2.43 47 72 108 163 6533 UU 65.1 32.5 27 22.2 44.2 10 21 2.7 42 64 96 145 6533 UU 65.1 32.5 20 20 40.1 12.5 19.94 2.5 41 63 94 142 7236 UU 72.4 35.6 20.9 21.7 44.6 13.9 21.96 2.9 43 66 99 149 7965 UU 79 65 35 42.5 35 22 30.71 7.7 82 126 189 283 8038 UU 80 38.1 23 22.7 49.3 15.4 23.75 3.54 49 75 112 268 112 POWDER CORES

Cylinder Core series Identification of Cylinder Core Series W 30 30 C CD Core shape : CD means Cylinder type cores Perm.(u) : permeability code(b:26, J:40, C:60) Size : height of cores [mm] Size : diameter of cores [mm] Material : material code(w, H, S, U) Where, W : Power Flux Material [Fe / Si] 30 : 30mm 30 : 30mm C : permeability 60 Dimension specification of Cylinder Core series [Fig.1] mechanical out lines [unit : mm] about Cylinder core series ΦOD ΦOD Special Core Data HT HT [Table 2] shows out dimension specification of Cylinder Core series P/N A Dimensions [mm] B Cross section Area (cm 2 ) 2430 24 30 4.51 2625 26 25 5.31 3030 30 30 7.07 5625 56 25 24.36 7838 78 38 47.78 8430 84 38 55.42 10420 104 20 84.95 www.dongbuem.com 113

5CPI Core Data

CDR series Identification of CPI Core CDR Series CDR 65 65 15 Size : height of cores [mm] Size : horizontal axis of cores [mm] Size : vertical axis of cores [mm] Core shape : CDR means Octagon type cores Where, CDR : Octagon Shape 65 : 6.5mm 65 : 6.5mm 15 : 1.5mm Dimension specification of CPI Core CDR Series [Fig.1] mechanical out lines [unit : mm] about CDR core series D H POWDER CORES C A B E F G [Table 2] shows out dimension specification of CDR core series [Size D, E, H : Customized] Model Width(A) Size(mm) Length(B) Height(D) Permeability (ui) CDR303009 2.9(±0.1) 2.9(±0.1) 0.9(±0.05) 45 CDR303010 2.9(±0.1) 2.9(±0.1) 1.0(±0.05) 45 CDR404009 3.9(±0.1) 3.9(±0.1) 0.9(±0.05) 45 CDR404010 3.9(±0.1) 3.9(±0.1) 1.0(±0.05) 45 CDR404015 3.9(±0.1) 3.9(±0.1) 1.5(±0.05) 45 CDR656510 6.5(±0.1) 6.5(±0.1) 1.05(±0.05) 45 CDR656515 6.5(±0.1) 6.5(±0.1) 1.40(±0.05) 45 CDR656518 6.5(±0.1) 6.5(±0.1) 1.65(±0.05) 45 CDR656530 6.5(±0.1) 6.5(±0.1) 2.85(±0.05) 45 CDR808030 8.0(±0.1) 8.0(±0.1) 2.80(±0.05) 45 CDR808040 8.0(±0.1) 8.0(±0.1) 3.80(±0.05) 45 116 POWDER CORES

DR series Identification of CPI Core DR Series DR 13 40 Where, DR : Drum Shape 13 : Φ13mm 40 : 4.0mm Size : height of cores [mm] Size : diameter of cores [mm] Core shape : DR means Drum type cores Dimension specification of CPI Core DR Series [Fig.1] mechanical out lines [unit : mm] about DR core series D E(I.D.) E A CPI Core Data A(I.D.) B F C [Table 2] shows out dimension specification of DR core series [Size D, E, F : Customized] Model Outside Diameter(A) Size(mm) Inside Diameter(E) Height(D) Permeability (ui) DR4010 4.0(±0.1) 1.5(±0.1) 0.82(±0.05) 45 DR5010 4.8(±0.1) 2.3(±0.1) 1.05(±0.05) 45 DR6010 6.2(±0.1) 3.0(±0.1) 0.90(±0.05) 45 DR6012 6.2(±0.1) 3.0(±0.1) 1.05(±0.05) 45 DR6015 6.2(±0.1) 3.0(±0.1) 1.35(±0.05) 45 DR8040 8.0(±0.1) 3.0(±0.1) 3.75(±0.05) 45 DR1040 10.0(±0.1) 3.5(±0.1) 3.70(±0.05) 45 DR1340 12.5(±0.1) 3.3(±0.1) 3.70(±0.05) 45 www.dongbuem.com 117

T series Identification of CPI Core T Series T 60 20 Where, T : T Shape 60 : 6.0mm 20 : 2.0mm Size : height of cores [mm] Size : horizontal axis of cores [mm] Core shape : T means T type cores Dimension specification of CPI Core T Series [Fig.1] mechanical out lines [unit : mm] about T core series B E POWDER CORES A C D H F G [Table 2] shows out dimension specification of T core series [Size F, G, H : Customized] Model Width(A) Size(mm) Length(B) Height(H) Permeability (ui) T6525 6.31(±0.1) 6.51(±0.1) 2.5(±0.1) 50 T7525 7.75(±0.1) 7.75(±0.1) 2.5(±0.1) 50 118 POWDER CORES