MAGNETIC POWDER CORES

Transcription

1 Ver.13 MAGNETIC POWDER CORES Innovative Technological Advancements Move forward with Chang Sung Corporation. We are one of the main suppliers of cutting edge products to all our customers at the forefront of the next generation in energy solutions.

2 01 ::: Chang Sung Corporation

3 CSC soft magnetic powder cores are at the forefront of advanced industries We deliver excellence in performance by always keeping our customers specific needs in mind. Chang Sung Corporation has been producing magnetic powder cores with sophisticated technological expertise in manufacturing metal powders since 80. We have steadfastly made investments into our research and development program as well as our manufacturing facilities to increase our range of products and production capacity in line with the growing needs of our customers. This has enabled Chang Sung Corporation to become a leading global player in producing soft magnetic powder cores. Today, we are well positioned to offer reliable product quality at competitive prices to meet the diverse requirements of all our clients. Moving forward with Chang Sung Corporation to the Next Generation in Energy Solutions. Magnetic Powder Cores ::: 02

4 What are Powder Cores? 03 ::: Chang Sung Corporation

5 MAGNETIC POWDER CORES PRODUCT LINE UP Chang Sung Corporation s advanced technology enables us to fulfill the diverse needs of our clients for soft magnetic powder cores. Powder cores are distributed air gap cores made from ferrous alloy powders for low losses at high frequencies. Small air gaps distributed evenly throughout the cores increase the amount of Direct Current (DC) that can be passed through the winding before core saturation occurs. Molybdenum Permalloy Powder (MPP) cores are ideal for low loss inductors such as switching regulators and noise filters. High Flux, Sendust and Mega Flux cores are the preferred choices for Power Factor Correction (PFC), switching regulator inductors, inline noise filters, pulse and flyback transformers and many other applications requiring low losses at high frequencies. Product Summary Cross Sectional View Magnetic Powder Ceramic Layer Core Materials MPP Core : NiFeMo alloy High Flux Core : FeNi alloy Sendust Core : FeSiAl alloy Mega Flux Core : FeSi alloy Core Shapes Toroids : From 3.5mm to 5mm OD Special : Ellipse, Block, Cylinder Washer, ER, U, EE, EER, EQ Permeability MPP :,, 1, 7, 1, 3, 0μ High Flux :,, 1, 7, 1μ Sendust :,,,, 1μ Mega Flux :, 50,,, μ Core Finishes Finish : Epoxy, ParyleneC, Plastic Case Color MPP : Gray High Flux : Khaki Sendust : Black Mega Flux : Dark Brown BreakDown Voltage : 500V min. Magnetic Powder Cores ::: 04

6 MAGNETIC POWDER CORES PRODUCT DESCRIPTION Outstanding products begin with a standardized production line and a strict quality control process Chang Sung Corporation manufactures four types of soft magnetic powder cores including the Molybdenum Permalloy (MPP), High Flux, Sendust and Mega Flux, which are mainly used for inductors and transformers requiring low losses and inductance stability under high DC bias conditions. A fully standardized production management system under strict quality control of the raw materials (nickel, iron, molybdenum, aluminum and silicon) enables CSC to guarantee consistent quality and thus build greater confidence in our company s product line. MPP NiFeMo alloy powder cores are made from alloy powders of nickel, iron and molybdenum. MPP cores exhibit a highly sustainable stability in temperature and inductance under high DC magnetization or high DC Bias conditions. They offer the highest permeability among our materials and the lowest core loss compared to any other core material. MPP cores are also considered to be a premium material for direct current output inductors for SMPS including high Q filters, loading coils and EMI/RFI filters. Finished toroid cores are coated with a gray epoxy to provide dielectric protection and added physical strength. HIGH FLUX NiFe alloy powder cores are made from alloy powders of nickel and iron. The,000 Gauss saturation level of High Flux cores has a higher energy storage capability and more effective permeability when compared to the performance of gapped ferrite or powdered iron cores of a similar size. The excellent DC bias characteristics and low core losses of High Flux cores offer a reduction in size and the number of winding turns as well as superior magnetic properties. CSC High Flux cores are excellent choices for applications such as PFC reactors, switching regulator inductors, inline noise filters, pulse transformers and flyback transformers. Finished High Flux cores are coated with a Khaki epoxy and come in a variety of shapes and sizes. SENDUST FeSiAl alloy powder cores are made from alloy powders of iron, silicon and aluminum. Nearzero magnetostriction makes Sendust cores ideal for eliminating audible noise in filter inductors. Core losses of Sendust cores are significantly lower than those of powdered iron cores. Especially Sendust E shapes provide a higher energy storage capability than gapped Ferrite E cores. Gap losses and eddy current losses are minimized with Sendust E cores compared to gapped ferrite E shapes. Sendust cores are a smart choice for PFC circuits. Other major applications include switching regulator inductors, Inline noise filters, pulse transformers and flyback transformers. Finished Sendust cores are coated in a black epoxy. MEGA FLUX FeSi alloy powder cores are made from an alloy of iron and silicon. CSC has developed new magnetic alloy powder cores for the first time in the world under the name of Mega Flux. The innovative design of these unique cores includes a smaller size, higher current and higher energy storage capability. Mega Flux cores have higher flux density than any other magnetic material,,000gauss compared to,000gauss for High Flux cores and 10,000 Gauss for Sendust cores. The extremely good DC bias characteristics provide the best solution for high end applications such as buck/boost inductors for high power supply systems, smoothing chokes for inverters and reactors for electric vehicles. Mega Flux cores pressed with no organic binder have significantly lower core losses than powdered iron cores and FeSi strip cores. They also present excellent thermal properties with no thermal aging effects. Finished Mega Flux cores are coated with a dark brown epoxy. 05 ::: Chang Sung Corporation

7 MAGNETIC POWDER CORES TECHNICAL DATA Comparison of Core materials Materials Perm. ( ) Bs (G) Core Loss DC Bias Relative Cost Temp. Stability Curie Temp ( ) MPP 0 7,000 Lower Better High Best 450 High Flux 1,000 Low Best Medium Better 500 Powder Sendust 1 10,000 Low Good Low Good 500 Mega Flux,000 Medium Best Low Better 700 Iron ,000 High Poor Lowest Poor 770 Strip Fesi (Gapped),000 High Best Lowest Good 740 Amorphous (Gapped),000 Low Better Medium Good 400 Ferrite (Gapped) 4,500 Lowest Poor Lowest Poor 100~0 Permeability vs DC Bias Core Loss (at 50kHz) Magnetic Powder Cores ::: 06

8 MAGNETIC POWDER CORES TECHNICAL DATA CSC s Core Designation Toroidal Core Designation CM 0 1 E Epoxy coated Permeability :1μ OD size:.0mm MPP core Core finish E : Epoxy, P : ParyleneC, C : Plastic Case Available perm., 50,,,, 1, 7, 1, 3, 0μ Available size 3.5mm~5.0mm(OD) Core material CM : MPP, CH : High Flux, CS : Sendust, CK : Mega Flux Nominal Inductance Table (AL Value) (nh/n 2 ) Permeability μ 0 μ 0 μ 0 μ 0 1μ 1 7μ 7 1μ 1 3μ 3 0μ 0 C 0 C 039 C C 063 C 066 C C 068 C 078 C C 097 C 102 C C 7 C 6 C C 3 C 9 C C 0 C 3 C C 8 C 400 C C 468 C 508 C C 572 C 610 C C 777 C 778 C 888 C 10 C 13 C example) AL value of CM01 is 7(nH/N 2 ) 07 ::: Chang Sung Corporation

9 MAGNETIC POWDER CORES TECHNICAL DATA Core Dimension Table (milimeters) Part Number C 0 C 039 C 046 Magnetic Path Length (cm) Cross Section A(cm 2 ) Window Area (cm 2 ) Surface Area(cm 2 ) Dimensions(mm) Weight(gm) OD(max) X ID(min) X HT(max) after finish 40% winding factor CM CH CS CK Before Finish After Finish Package Unit (pcs/box) 40k 40k 40k C 063 C 066 C k k k C 068 C 078 C k k 8k C 097 C 102 C k 8k 6k C 7 C 6 C K 1,9 1,9 C 3 C 9 C , C 0 C 3 C C 8 C 400 C C 468 C 508 C C 572 C 610 C C 777 C 778 C C 10 C 13 C CM : MPP Core, CH : High Flux Core, CS : Sendust Core, CK : Mega Flux Core Window area : area of inner diameter. In addition to the cores listed above, customized specifications are also available. Magnetic Powder Cores ::: 08

10 MAGNETIC POWDER CORES TECHNICAL DATA Magnetic Design Formulas Inductance of a Wound Core The inductance of a wound core at a given number of turns is calculated using the following formula. L LN = 0.4 μ N 2 A 10 2 = AL N L = inductance( μh) μ = core permeability N = number of turns A = effective cross section area(cm 2 ) = mean magnetic path length(cm) LN = Inductance at N turns( μh) AL = nominal Inductance(nH/N 2 ) Permeability Flux Density Magnetizing Force Ampere s Law and Faraday s Law show the relations of permeability, flux density and magnetizing force of a wound core. H Bmax μ = 0.4 Nl = E rms fAN = B H Ampere s Law Faraday s Law H = magnetizing force(oersteds) N = number of turns l = peak magnetizing current(amperes) = mean magnetic path length(cm) Bmax = maximum flux density(gausses) Erms = voltage across coil(volts) f = frequency(hertz) Inductance Calculation by Permeability vs DC Bias Curves Inductor specification Core : CM01 Number of Windings : Turns Current : DC 10Amperes solution a) Formula to calculate L at 0Ampere LN = AL N The Nominal inductance table on page 7 shows the AL value of CM01 to be 7. Therefore, L ( 0A) = = 76 ( μh) b) Determine DC magnetizing force (H) by using Ampere s law to achieve the roll off. H = 0.4 Nl / H = / 6. = 43.5(Oe) The magnetizing force(dc bias) is 43.5 oersteds, yielding 64% of initial permeability. See on page. The inductance at 10Ampere will decrease the inductance by 64% compared with 0Ampere. Therefore, L( 10A) = = 48.6 ( μh) Inductance calculation by AL vs Nl Curve is also available on page. 09 ::: Chang Sung Corporation

11 MAGNETIC POWDER CORES TECHNICAL DATA Mean Magnetic Path Length For toroidal powder cores, the effective area(a) is the same as the cross sectional area. By definition and Ampere s Law, the effective magnetic path length is the ratio of ampereturns(ni) to the average magnetizing force. Using Ampere s Law and averaging the magnetizing force gives the formula for effective path length. = (OD ID) OD ln( ID ) OD = outside diameter of core (cm) ID = inside diameter of core (cm) A = core cross section (effective area) = mean magnetic path length (cm) Q Factor The Q factor is defined as the ratio of reactance to the effective resistance for an inductor and thus indicates its quality. The Q of wound core can be calculated using the following formula, when neglecting the effects of selfresonance caused by the distributed capacitance resulting from the differential voltage between adjacent turns. Q = L Rdc Rac Rd Q = quality factor = 2 frequency (hertz) L = inductance (henries) Rdc = DC winding resistance (ohms) Rac = resistance due to core loss (ohms) Rd = resistance due to winding dielectric loss (ohms) Core Loss Powder cores have low hysteresis loss, minimizing signal distortion, and low residual loss. The total core loss at low flux densities is the sum of three frequency dependent losses of hysteresis loss, residual loss, and eddy current loss. The core loss is calculated from the following Legg s equation. Rac L = abmaxf cf ef 2 Eddy current loss Where Rac = core loss resistance (ohms) a = hysteresis loss coefficient c = residual loss coefficient e = eddy current loss coefficient, L, Bmax, f = same as mentioned before Residual loss Hysteresis loss Total loss factor When a varying magnetic field passes through the core, eddy currents are induced in it. Joule heat loss by these currents is called eddy current loss. Hysteresis loss is due to the irreversible behavior in the hysteresis curve and equal to the enclosed area of the loop. The other core loss is called residual loss. Magnetic Powder Cores ::: 10

12 MAGNETIC POWDER CORES TECHNICAL DATA Permeability vs DC Bias Curves MPP %perm = μ a a+b b 1.42E07 1.E E E07 8.E E06 1.E06 H c c High Flux %perm = μ a a+b b 3.41E E E07 1.E E07 H c c ::: Chang Sung Corporation

13 MAGNETIC POWDER CORES TECHNICAL DATA %perm = μ 1 a a+b b 1.E06 2.E E E E05 H c c Sendust %perm = μ 50 a a+b b 9.96E08 7.E08 3.E07 1.E E06 H c c Mega Flux Magnetic Powder Cores :::

14 MAGNETIC POWDER CORES TECHNICAL DATA Permeability vs Frequency Curves Mega Flux Sendust High Flux MPP 13 ::: Chang Sung Corporation

15 MAGNETIC POWDER CORES TECHNICAL DATA MPP Core Loss MPP μ, μ MPP μ, μ P L = 0. B 1.99 f 1.68 (B : kilogauss, f : khz) MPP 1μ MPP 1μ Magnetic Powder Cores :::

16 MAGNETIC POWDER CORES TECHNICAL DATA MPP Core Loss MPP 7μ, 1μ, 3μ 3 Core Loss (mw/cm ) kHz 10kHz khz 50kHz 100kHz 0kHz 0kHz MPP 7μ, 1μ, 3μ P=B 2.0 (0.865f+0.34f 1.7 ) P:mW/cc, B:kGauss, f:khz Flux Density (Gauss) MPP 0μ MPP 0μ Core Loss (mw/cm 3 ) kHz 10kHz khz 50kHz 100kHz 0kHz 0kHz P=B (0.848f+0.13f 1.7 ) P:mW/cc, B:kGauss, f:khz Flux Density (Gauss) ::: Chang Sung Corporation

17 MAGNETIC POWDER CORES TECHNICAL DATA High Flux Core Loss High Flux μ High Flux μ High Flux μ High Flux μ Magnetic Powder Cores :::

18 MAGNETIC POWDER CORES TECHNICAL DATA High Flux Core Loss High Flux 1μ High Flux 7μ, 1μ High Flux 1μ High Flux 7μ, 1μ ::: Chang Sung Corporation

19 MAGNETIC POWDER CORES TECHNICAL DATA Sendust Core Loss Sendust μ Sendust μ, μ, μ, 1μ Sendust μ Sendust μ, μ, μ, 1μ Magnetic Powder Cores :::

20 MAGNETIC POWDER CORES TECHNICAL DATA Mega Flux Core Loss Mega Flux μ Mega Flux 50μ, μ, μ, μ Mega Flux μ Mega Flux 50μ, μ, μ, μ ::: Chang Sung Corporation

21 MAGNETIC POWDER CORES TECHNICAL DATA Temperature Stability Mega Flux Sendust High Flux MPP Magnetic Powder Cores :::

22 ::: Chang Sung Corporation MAGNETIC POWDER CORES TECHNICAL DATA inch cm cm 2 ( 10 3 ) CirMil Area Diameter gm/cm Weight cm at CirMil cm 2 ( 10 3 ) AWG Wire No Bare Area Resistivity Heavy Synthetics Current Capacity Amps (listed by columns of amps/cm 2 ) Wire Table

23 MAGNETIC POWDER CORES TECHNICAL DATA Winding Data Core Size Wire Length / Turn Wound Dimension c Window Area a 100 (unity) b 0 OD HT(Max) CirMils cm 2 ft cm ft cm inch mm 3,0 6,080 5,780 8,100 8,100 7,570,500,0 28,0 28,0,400 53,800,0 0,0 1,000 2,0 7, ,800 8, ,0 788,500 7, , ,700 1,6,000 1,484,000 1,0,049 1,871,000 3,550,000 a : Window Area (= / ID 2 : Core inside diameter), b : Winding Factor ( k= Usable window area/total window area), c : 100% Winding Assumed Single Layer Winding Capacity Core Size ID(mm) Wire No. Wire Dia Turns / Single Layer Magnetic Powder Cores :::

24 MAGNETIC POWDER CORES NOTES ::: Chang Sung Corporation

25 TOROIDAL MAGNETIC POWDER CORES Tolerance of AL value Core Size Sendust MPP High Flux Mega Flux OD 0~OD 046 OD 063~OD 1 OD 7~OD % % 8% % 8% 8% % 8% 8% NA 8% 8% Inductance Calculation by AL vs NI Curves; Inductor specification Core : CM01 Number of Winding : Turns Current : DC 10Amperes Solution a) Calculate NI (Ampere Turns) NI = Turns X 10Ampere = 2 b) Read the AL value of CM01 using the AL vs NI curve on page 43. AL value of CM01 yields when NI is 2. c) Calculate L at 10Ampere by using formula; LN = AL x N 2 X 10 3 (μh) Therefore, L( 10A) = = 48.6(μH) Inductance calculation by Permeability vs DC Bias Curve is also available on Page. Magnetic Powder Cores :::

26 TOROIDAL MAGNETIC POWDER CORES OD0 OD 3.56mm / 0.0inch ID 1.78mm HT 1.52mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (parylenec) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm 2 0.8cm 0.0cm cm in 2 0.3in 3,0cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM00 CM01 CM07 CM01 CH00 CH01 CS00 CS00 CS00 CS01 CK00 CK00 CK Single layer winding with 1 inch leads AL vs NI Curve (1μ) ::: Chang Sung Corporation

27 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (ParyleneC) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.01cm cm 0.08cm cm in inch 6,080cmil in 3 OD039 OD 3.94mm / 0.5inch ID 2.mm HT 2.54mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads MPP High Flux Sendust Mega Flux CM03 CM0391 CM0397 CM0391 CH03 CH0391 CS03 CS03 CS03 CS0391 CK03 CK03 CK03 AL (nh/n 2 ) Perm. (μ) AL vs NI Curve (1μ) Magnetic Powder Cores :::

28 TOROIDAL MAGNETIC POWDER CORES OD046 OD 4.65mm / 0.3inch ID 2.36mm HT 2.54mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (parylenec) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm 2 1.0cm 0.029cm cm in 2 0.4in 5,780cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM04 CM0461 CM0467 CM0461 CH04 CH0461 CS04 CS04 CS04 CS0461 CK04 CK04 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) ::: Chang Sung Corporation

29 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (parylenec) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm cm 0.04cm cm in in 8,100cmil in 3 OD063 OD 6.mm / 0.0inch ID 2.79mm HT 2.79mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM06 CM0631 CM0637 CM0631 CM0633 CM06 CH06 CH0631 CH0637 CH0631 CS06 CS06 CS06 CS0631 CK06 CK06 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 28

30 TOROIDAL MAGNETIC POWDER CORES OD066 OD 6.6mm / 0.0inch ID 2.67mm HT 2.54mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm cm 0.04cm cm in in 8,100cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM06 CM06 CM0661 CM0667 CM0661 CM0663 CM06 CH06 CH06 CH0661 CH0667 CH0661 CS06 CS06 CS06 CS0661 CK06 CK06 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 29 ::: Chang Sung Corporation

31 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.09cm cm cm 2 0.cm 3 0.0in in 7,570cmil in 3 OD067 OD 6.6mm / 0.0inch ID 2.67mm HT 4.78mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM0670 CM0670 CM0671 CM0677 CM0671 CM0673 CM0670 CH0670 CH0670 CH0671 CH0677 CH0671 CS0670 CS0670 CS0670 CS0671 CK0670 CK0670 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores :::

32 TOROIDAL MAGNETIC POWDER CORES OD068 OD 6.86mm / 0.0inch ID 3.96mm HT 5.08mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.07cm cm cm cm 3 0.0in in,500cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM0680 CM0680 CM0681 CM0687 CM0681 CM0683 CM0680 CH0680 CH0680 CH0681 CH0687 CH0681 CS0680 CS0680 CS0680 CS0681 CK0680 CK0680 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 31 ::: Chang Sung Corporation

33 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.06cm cm 0.09cm cm in in,0cmil in 3 OD078 OD 7.87mm / 0.310inch ID 3.96mm HT 3.mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM0780 CM0780 CM0781 CM0787 CM0781 CM0783 CM0780 CH0780 CH0780 CH0781 CH0787 CH0781 _ CS0780 CS0780 CS0780 CS0781 _ CK0780 CK0780 CK0780 _ AL vs NI Curve (μ, 1μ) Magnetic Powder Cores :::

34 TOROIDAL MAGNETIC POWDER CORES OD096 OD 9.65mm / 0.380inch ID 4.78mm HT 3.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.02cm 2 2.cm 0.29cm cm in in 28,0cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux CM09 CM09 CM0961 CM0967 CM0961 CM0963 CM09 CH09 CH09 CH0961 CH0967 CH0961 CS09 CS09 CS09 CS0961 CK09 CK09 CK09 AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 33 ::: Chang Sung Corporation

35 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm 2 2.cm 0.29cm 2 0.cm in in 28,0cmil 0.0in 3 OD097 OD 9.65mm / 0.380inch ID 4.78mm HT 3.96mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM0970 CM0970 CM0971 CM0977 CM0971 CM0973 CM0970 CH0970 CH0970 CH0971 CH0977 CH0971 _ CS0970 CS0970 CS0970 CS0971 _ CK0970 CK0970 CK0970 _ AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 34

36 TOROIDAL MAGNETIC POWDER CORES OD102 OD 10.mm / 0.400inch ID 5.08mm HT 3.96mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm cm 0.4cm cm in 2 0.6in,400cmil 0.00in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM10 CM10 CM10 CM10 CM10 CM1073 CM1020 CH10 CH10 CH10 CH10 CH10 CS10 CS10 CS10 CS10 CK10 CK10 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) ::: Chang Sung Corporation

37 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.06cm cm 0.3cm cm in in 53,800cmil 0.0in 3 OD1 OD.mm / 0.440inch ID 6.mm HT 3.96mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM CM CM CM CM CM13 CM10 CH CH CH CH CH CS CS CS CS10 CS CK CK CK CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 36

38 TOROIDAL MAGNETIC POWDER CORES OD7 OD.70mm / 0.500inch ID 7.62mm HT 4.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.1cm 2 3.cm 0.383cm cm in 2 1.9in,0cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux CM70 CM70 CM71 CM77 CM71 CM73 CM70 CH70 CH70 CH71 CH77 CH71 CS70 CS70 CS70 CS70 CS71 CK70 CK70 CK70 CK70 AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 37 ::: Chang Sung Corporation

39 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.cm 2 4.cm 0.713cm cm in 2 1,6in 0,0cmil in 3 OD6 OD.51mm / 0.650inch ID 10.mm HT 6.mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads MPP High Flux Sendust Mega Flux CM CM CM61 CM67 CM61 CM63 CM CH CH CH61 CH67 CH61 CS CS CS CS CS61 CK CK CK CK AL (nh/n 2 ) Perm. (μ) AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 38

40 TOROIDAL MAGNETIC POWDER CORES OD2 OD.mm / 0.680inch ID 9.65mm HT 6.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.2cm 2 4.cm 0.683cm cm in in 1,000cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux CM CM CM CM CM CM73 CM20 CH CH CH CH CH CS CS CS CS CS CK CK CK CK AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 39 ::: Chang Sung Corporation

41 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.2cm cm 1.cm cm 3 0.0in in 2,0cmil 0.070in 3 OD3 OD.mm / 0.800inch ID.70mm HT 6.mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads MPP High Flux Sendust Mega Flux CM CM CM31 CM37 CM31 CM33 CM CH CH CH31 CH37 CH31 CS CS CS CS CS31 CK CK CK CK AL (nh/n 2 ) Perm. (μ) AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 40

42 TOROIDAL MAGNETIC POWDER CORES OD9 OD.86mm / 0.0inch ID 13.97mm HT 7.62mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.331cm cm 1.41cm cm in 2 2.in 7,700cmil 0.5in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM CM CM91 CM97 CM91 CM93 CM CH CH CH91 CH97 CH91 CS CS CS CS CS91 CK CK CK CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 41 ::: Chang Sung Corporation

43 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.388cm cm 1.49cm cm in 2 2.in 293,800cmil 0.in 3 OD4 OD.57mm / 0.928inch ID.40mm HT 8.89mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads MPP High Flux Sendust Mega Flux CM40 CM40 CM41 CM47 CM41 CM43 CM40 CH40 CH40 CH41 CH47 CH41 CS40 CS40 CS40 CS40 CS41 CK40 CK40 CK40 CK40 AL (nh/n 2 ) Perm. (μ) AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 42

44 TOROIDAL MAGNETIC POWDER CORES OD0 OD.92mm / 1.0inches ID.73mm HT.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.654cm 2 6.cm 1.56cm 2 4.4cm in in 8,000cmil 0.36in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM00 CM00 CM01 CM07 CM01 CM03 CM00 CH00 CH00 CH01 CH07 CH01 CS00 CS00 CS00 CS00 CS01 CK00 CK00 CK00 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 43 ::: Chang Sung Corporation

45 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) cm 2 8.cm 2.93cm cm in 2 3.in 577,0cmil in 3 OD3 OD 33.02mm / 1.0inches ID.94mm HT 10.67mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM30 CM30 CM31 CM37 CM31 CM33 CH30 CH30 CH31 CH37 CH31 CS30 CS30 CS30 CS30 CS31 CK30 CK30 CK30 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 44

46 TOROIDAL MAGNETIC POWDER CORES OD343 OD 34.29mm / 1.0inches ID.37mm HT 8.89mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.454cm cm 4.01cm cm in in 788,500cmil 0.85in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM34 CM34 CM3431 CM3437 CM3431 CM3433 CH34 CH34 CH3431 CH3437 CH3431 CS34 CS34 CS34 CS34 CS3431 CK34 CK34 CK34 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 45 ::: Chang Sung Corporation

47 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 0.678cm cm 3.64cm cm in in 7,100cmil 0.37in 3 OD8 OD.81mm / 1.410inches ID.mm HT 10.46mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM80 CM80 CM81 CM87 CM81 CM83 CH80 CH80 CH81 CH87 CH81 CS80 CS80 CS80 CS80 CS81 CK80 CK80 CK80 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 46

48 TOROIDAL MAGNETIC POWDER CORES OD400 OD 39.88mm / 1.570inches ID.13mm HT.48mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.072cm cm 4.cm cm in in 842,700cmil in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM4000 CM4000 CM4001 CM4007 CM4001 CM4003 CH4000 CH4000 CH4001 CH4007 CH4001 CS4000 CS4000 CS4000 CS4000 CS4001 CK4000 CK4000 CK4000 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 47 ::: Chang Sung Corporation

49 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.9cm cm 4.cm 2.373cm 3 0.8in 2 4.in 842,700cmil 1.3in 3 OD467 OD 46.74mm / 1.840inches ID.13mm HT.03mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM4670 CM4670 CM4671 CM4677 CM4671 CH4670 CH4670 CH4671 CS4670 CS4670 CS4670 CS4670 CS4671 CK4670 CK4670 CK4670 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 48

50 TOROIDAL MAGNETIC POWDER CORES OD468 OD 46.74mm / 1.840inches ID 28.70mm HT.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.340cm 2.63cm 6.cm 2.584cm 3 0.8in in 1,6,000cmil 0.95in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM4680 CM4680 CM4681 CM4687 CM4681 CH4680 CH4680 CH4681 CS4680 CS4680 CS4680 CS4680 CS4681 CK4680 CK4680 CK4680 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 49 ::: Chang Sung Corporation

51 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.1cm 2.73cm 7.50cm 2.929cm 3 0.4in in 1,484,000cmil in 3 OD508 OD 50.80mm / 2.000inches ID 31.mm HT 13.46mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM5080 CM5080 CM5081 CM5087 CM5081 CH5080 CH5080 CH5081 CS5080 CS5080 CS5080 CS5080 CS5081 CK5080 CK5080 CK5080 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 50

52 TOROIDAL MAGNETIC POWDER CORES OD571 OD 57.mm / 2.0inches ID.39mm HT.mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 2.29cm 2.5cm 5.cm cm 3 0.5in in 1,0,049cmil 1.in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM5710 CM5710 CM57 CM57 CM57 CH5710 CH5710 CH57 CS5710 CS5710 CS5710 CS5710 CS57 CK5710 CK5710 CK5710 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 51 ::: Chang Sung Corporation

53 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.444cm 2.cm 9.48cm 2.65cm 3 0.4in in 1,871,000cmil 1.1in 3 OD572 OD 57.mm / 2.0inches ID.56mm HT 13.97mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) Single layer winding with 1 inch leads CM57 CM57 CM57 CM57 CM57 CH57 CH57 CH57 CS57 CS57 CS57 CS57 CS57 CK57 CK57 CK57 CK AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 52

54 TOROIDAL MAGNETIC POWDER CORES OD610 OD 62.0mm / 2.441inches ID.6mm HT.0mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 3.6cm 2.37cm 7.73cm cm in in 1,5,610cmil 3.3in 3 Available Cores MPP High Flux Sendust Mega Flux CM6100 CM6100 CM6101 CH6100 CH6100 CH6101 CS6100 CS6100 CS6100 CS6100 CS6101 CK6100 CK6100 CK6100 CK6100 AL (nh/n 2 ) Perm. (μ) Winding Information AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads N A N A AL vs NI Curve (μ, 1μ) 53 ::: Chang Sung Corporation

55 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 5.040cm 2.38cm.cm cm in 2 7.in 3,009,310cmil 5.653in 3 OD740 OD 74.1mm / 2.9inches ID 45.3mm HT.0mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer AL Perm. No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux (nh/n 2 ) (μ) N A N A CM7400 CM7400 CM7401 CH7400 CH7400 CH7401 CS7400 CS7400 CS7400 CS7400 CS7401 CK7400 CK7400 CK7400 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 54

56 TOROIDAL MAGNETIC POWDER CORES OD777 OD 77.8mm / 3.063inches ID 49.mm HT.70mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.770cm 2.0cm.99cm cm 3 0.4in in 3,550,000cmil 2.1in 3 Available Cores Winding Information MPP High Flux Sendust Mega Flux AL (nh/n 2 ) Perm. (μ) AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, CM7770 CM7770 CM7771 CH7770 CH7770 CH7771 CS7770 CS7770 CS7770 CS7770 CS7771 CK7770 CK7770 CK7770 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) 55 ::: Chang Sung Corporation

57 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 2.0cm 2.0cm.99cm cm 3 0.2in in 3,550,000cmil 2.656in 3 OD778 OD 77.8mm / 3.063inches ID 49.mm HT.9mm TOROIDAL MAGNETIC POWDER CORES Winding Information Available Cores AWG Wire Single Layer AWG Wire Single Layer AL Perm. No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, MPP High Flux Sendust Mega Flux (nh/n 2 ) (μ) N A N A CM7780 CM7780 CM7781 CH7780 CH7780 CH7781 CS7780 CS7780 CS7780 CS7780 CS7781 CK7780 CK7780 CK7780 CK Single layer winding with 1 inch leads AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 56

58 TOROIDAL MAGNETIC POWDER CORES OD888 OD 88.9mm / 3.500inches ID 66.0mm HT.9mm Core Dimensions Magnetic Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 1.83cm 2.10cm.92cm 2 44,103cm in in 6,00,0cmil 2.691in 3 Available Cores MPP High Flux Sendust Mega Flux CM8880 CM8880 CM8881 CH8880 CH8880 CH8881 CS8880 CS8880 CS8880 CS8880 CS8881 CK8880 CK8880 CK8880 CK8880 AL Perm. (nh/n 2 ) (μ) Winding Information AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads N A N A AL vs NI Curve (μ, 1μ) 57 ::: Chang Sung Corporation

59 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 3.5cm 2.cm.36cm cm in in 4,807,4cmil 5.7in 3 OD10 OD 101.6mm / 3.980inches ID 57.2mm HT.5mm TOROIDAL MAGNETIC POWDER CORES Winding Information AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads N A N A Available Cores MPP High Flux Sendust Mega Flux CM101 CM101 CM101 CH101 CH101 CH101 CS101 CS101 CS101 CK101 CK101 AL (nh/n 2 ) Perm. (μ) AL vs NI Curve (μ, 1μ) Magnetic Powder Cores ::: 58

60 TOROIDAL MAGNETIC POWDER CORES OD13 OD 1.5mm / 5.7inches ID 78.6mm HT.4mm Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 6.71cm 2.42cm 46.61cm cm in 2.77in 9,9,089cmil 13.28in 3 Available Cores MPP High Flux Sendust Mega Flux CM1 CM1 CM131 CH1 CH1 CH131 CS1 CS1 CS131 CK1 CK1 AL Perm. (nh/n 2 ) (μ) Winding Information AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads N A N A AL vs NI Curve (μ, 1μ) 59 ::: Chang Sung Corporation

61 Core Dimensions OD(max) ID(min) HT(max) Before coating (mm) (inch) After coating (mm) (Epoxy) (inch) Magnetic Dimensions Cross Section Path Length Window Area Volume (A) ( ) (Wa) (V) 9.46cm cm 59.31cm cm in 2.in,704,978cmil.31in 3 OD OD 5.0mm / 6.496inches ID 88.9mm HT.4mm TOROIDAL MAGNETIC POWDER CORES Winding Information AWG Wire Single Layer AWG Wire Single Layer No. Dia(cm) Turn Rdc, No. Dia(cm) Turn Rdc, Single layer winding with 1 inch leads N A N A Available Cores MPP High Flux Sendust Mega Flux CM1 CM1 CM1 CH1 CH1 CH1 CS1 CS1 CS1 CK1 CK1 AL Perm. (nh/n 2 ) (μ) AL vs NI Curve (μ, 1μ) Magnetic Powder Cores :::

62 MAGNETIC POWDER CORES NOTES 61 ::: Chang Sung Corporation

63 SPECIAL MAGNETIC POWDER CORES Magnetic Powder Cores ::: 62

64 SPECIAL MAGNETIC POWDER CORES ELLIPSE CORES Features Applications Shorter wire length than rectangular post Good DC Bias characteristics Larger energy storage capacity Low core loss at high frequency Choke filter for solar cell inverters Boost Inductor for solar cell inverters Product Identification Post LK C Permeability : μ Height : mm Available perm. A:μ, B:40μ, C:μ Available size : mm~mm Width : mm Length : mm Mega Flux Ellipse Core LK : Mega Flux, LS: Sendust Plate LK 13 C Permeability : μ Height : 13mm Available perm. A:μ, B:40μ, C:μ Available size : 13mm~mm Width : mm Length : mm Ellipse Core LK : Mega Flux Post Ellipse Cores Plate Ellipse Cores A Length (mm) Dimensions B Width (mm) RC Radius (mm) D Height (mm) Cross Section Area (cm 2 ) A Length (mm) Dimensions B Width (mm) RC Radius (mm) D Height (mm) Cross Section Area (cm 2 ) LK LK LK LK LK5013 LK50 LK13 LK LK7013 LK LS(Sendust Ellipse Core), LH(High Flux Ellipse Core) and customized designs are also available. 63 ::: Chang Sung Corporation

65 Magnetic Powder Cores ::: 64 Permeability vs DC Bias Curves ELLIPSE CORES ASSEMBLY SPECIAL MAGNETIC POWDER CORES PLATE 1 LEG STACK Dimensions POST Path Length (cm) Cross Section Area(cm 2 ) Window Area (cm 2 ) AL value (nh/n 2 ) % 0μ 040μ 0μ A Length (mm) B Width (mm) C Height (mm) D Inner Height (mm) LK5013 LK50 LK LK LK LK LK LK E Inner Length (mm) LK13 LK LK7013 LK70 LK LK LK LK LK LK LK LK LK LK LK LK

66 SPECIAL MAGNETIC POWDER CORES BLOCK CORES Features Applications Large energy storage capacity No magnetic flux leakage Good temperature stability Low core loss at high frequency High inductance choke coils Flyback transformers Multiple circuit choke coils Output chokes for SMPS Product Identification BK Permeability :μ Height : mm Available perm.,40,μ Available HT : mm~mm Width : mm Length : mm Available size : 50mm~80mm Mega Flux Block Core BH : High Flux, BS: Sendust Dimensions(mm) A B C Cross Section Area(cm 2 ) BK53 BK53 BK BK63 BK73 BK BK83 BK BS(Sendust Block Core), BH(High Flux Core) and customized designs are also available. 65 ::: Chang Sung Corporation

67 BLOCK CORES ASSEMBLY SPECIAL MAGNETIC POWDER CORES Permeability vs DC Bias Curves Unit Assembled (L x W x H mm) Path Length (cm) Window Area (cm 2 ) Sectional Area (cm 2 ) AL value (nh/n 2 ) % 0μ 040μ 0μ BK53 BK53 BK63 BK63 BK73 BK73 BK83 BK83 80 x 50 x x 50 x x x 100 x x 100 x 70 x 0 x 70 x 0 x 80 x 1 x 80 x Magnetic Powder Cores ::: 66

68 SPECIAL MAGNETIC POWDER CORES CYLINDER+ROUND BLOCK CORES Features Applications Large energy storage capacity Low core loss at high frequency Power inductor for large currents Buck/ Boost inductor for inverters Product Identification Post CK 0 Permeability :μ Available perm. A:μ, B:40μ, C:μ HT : mm OD : mm Mega Flux Cylinder Core Available size mm ~ mm CS : Sendust, CH : High Flux Plate RBK 54 C Permeability :μ Height : mm Available perm. A:μ, B:40μ, C:μ Available size : 13mm~mm Width : mm Length : 54mm Round Block Core RBK : Mega Flux Post Cylinder Cores Plate Round Block Core Cylinder Dimensions OD (mm) HT (mm) Cross Section Area (cm 2 ) Plate Plate A Length (mm) Dimensions B Width (mm) RC Radius (mm) D Height (mm) Cross Section Area (cm 2 ) Post CK CK CK CK2828 CK CK CK RBK54 RBK64 RBK67 RBK7428 RBK80 RBK80 RBK54 RBK64 RBK67 RBK7428 RBK CK CK CK CK2828 CK CS(Sendust Cylinder Core), CH(High Flux Cylinder Core) and customized designs are also available 67 ::: Chang Sung Corporation

69 CYLINDER ASSEMBLY DC Bais Characteristics SPECIAL MAGNETIC POWDER CORES Plate Cylinder 1 LEG STACK A Length (mm) B Width (mm) Dimensions C Height (mm) D Inner Height (mm) E Inner Length (mm) Path Length (cm) Cross Section Area (cm 2 ) Window Area (cm 2 ) AL value (nh/n 2 ) % 0μ 040μ 0μ RBK54 RBK64 RBK67 RBK7428 RBK80 CK CK CK CK2828 CK Magnetic Powder Cores ::: 68

70 SPECIAL MAGNETIC POWDER CORES EE CORES Features Applications Large energy storage capacity No magnetic flux leakage Good temperature stability Low core loss at high frequency High inductance choke coils Flyback transformers Multiple circuit choke coils Output chokes for SMPS Product Identification ES 43 A 0 Permeability :μ Available perm., 40,, μ Height of E core Width : mm Length : 43mm Sendust E core Available size : 8.0mm~38.1mm Available size :.0mm~80.0mm EK : Mega Flux ES 08A ES 10A ES A ES A ES 41A ES 43A ES 43B ES 43C ES 5528A ES 5528B ES 6533A ES 78A ES 8038A Dimensions(mm) Path Cross AL value (nh/n Length Section 2 ) % Area A B C D(min) E(min) F L(nom) M(min) (cm) (cm 2 ) 0μ 040μ 0μ 0μ EK(Mega Flux EE Core) and customized designs are also available. 69 ::: Chang Sung Corporation

71 EER CORES Features Applications Large energy storage capacity No magnetic flux leakage Good temperature stability Excellent DC bias characteristics Power inductor for large currents Multiple circuit choke coils Output chokes for SMPS SPECIAL MAGNETIC POWDER CORES Product Identification HER B 0 Permeability :μ Available perm., 40, μ Height of EER core Width : 13mm Length : 40mm High Flux EER Core Available size : 7mm~mm Available size : mm~49mm KER : Mega Flux, SER : Sendust HER 07A HER 07B HER 10A HER A HER B HER 4013A HER 4013B HER 42A HER 42B HER 49A HER 49B Dimensions(mm) Path Cross AL value (nh/n Length Section 2 ) % Area A B C D E F (cm) (cm 2 ) 0μ 040μ 0μ KER(Mega Flux EER Core), SER(Sendust EER Core)and customized designs are also available. Magnetic Powder Cores ::: 70

72 SPECIAL MAGNETIC POWDER CORES EQ CORES Features Applications Small dimensions for large currents No magnetic flux leakage Excellent DC bias characteristics Good temperature stability Large energy storage capacity Small dimension DC/DC converters Large current choke coils Smoothing choke coils CPU cores for laptop computers Product Identification KEQ A 040 Permeability :40μ Available perm., 40, μ Height of EQ core Width : 28mm Length : 40mm Mega Flux EQ core Available size : mm~ 65mm HEQ : High Flux, SEQ : Sendust KEQ A KEQ B KEQ A KEQ B KEQ A KEQ B KEQ 36A KEQ 48A KEQ 50A Dimensions(mm) Path Cross AL value (nh/n Length Section 2 ) % Area A B C D E F (cm) (cm 2 ) 0μ 040μ 0μ HEQ(High Flux EQ Core), SEQ(Sendust EQ core) and customized designs are also available ::: Chang Sung Corporation

73 Features Applications ER CORES Small dimensions for large currents No magnetic flux leakage Excellent DC bias characteristics Good temperature stability Large energy storage capacity Small dimension DC/DC converters Large current choke coils Smoothing choke coils CPU cores for laptop computers SPECIAL MAGNETIC POWDER CORES Product Identification RH 44 SC Shape Number Height : 4.4mm Length : mm Available size 8mm ~mm High Flux ER core RK : Mega Flux Dimensions(mm) A B C D E F Path Length (cm) Cross Section Area (cm 2 ) AL value (nh/n 2 ) % RH07SC RH07SC RH1028SC RH1034SC RHSC RH14SC RH39SC RH49SC RK(Mega Flux RK core) and customized designs are also available. Magnetic Powder Cores ::: 72

74 SPECIAL MAGNETIC POWDER CORES U CORES Features Applications Large energy storage capacity No magnetic flux leakage Good temperature stability Low core loss at high frequencies High inductance choke coils Flyback transformers Multiple circuit choke coils Output chokes for SMPS Product Identification UK C 0 Permeability :μ Available perm., 40, μ Height of U core Width : 41mm Length : 41mm Available size : 36mm~ 65mm Available size : mm~79mm Mega Flux U core UH : High Flux, US : Sendust Dimensions(mm) Path Length Cross Section AL value (nh/n 2 ) % A B C D E F (cm) Area(cm 2 ) 0μ 040μ 0μ UK36A UK36B UK41A UK41B UK41C UK51A UK51B UK6361A UK6361B UK7965A UK7965B UH(High Flux U Core), US(Sendust U Core) and customized designs are also available. 73 ::: Chang Sung Corporation

75 WASHER CORES Features Applications High permeability powder cores Low core loss at high frequencies High efficiency washer cores Minimum magnetic flux leakage Excellent DC bias characteristics Good temperature stability Large energy storage capacity Choke coil for mobile phones Inductor for handheld devices Power Inductor for PDA, LCD SPECIAL MAGNETIC POWDER CORES Product Identification DM 46 P Parylene C coated Height : 1.2mm OD size : 4.6mm Available HT 0.8mm~ 1.2mm Available size : 3.5mm~ 6.3mm Washer Core DM : Washer MPP Core Core Dimensions(mm) Before Finish OD ID HT AL value (nh/n 2 ) % Path Length (cm) Typical Inductance L 0A, T( H) Recommended Inductance L( H) at 0A DM 08P DM 10P , 4.7, 6.8,10 DM 38P DM 3910P DM 39P , 4.7, 6.8, 10,, DM 4610P DM 46P DM 46P , 4.7, 6.8, 10,, DM 6310P DM 63P , 6.8,10,,, 33, 47, 56 Magnetic Powder Cores ::: 74

76 SPECIAL MAGNETIC POWDER CORE BIG TOROIDAL CORES Features Applications Excellent DC bias characteristics Near zero magnetostriction coefficient constant Good temperature stability Power factor correction(pfc) circuits Power inductors for large currents AC Reactors for inverters Product Identification CS 0 E Epoxy coated Perm. : μ Height : mm OD size : 5mm Sendust Core E : Epoxy, C : Plastic case, U : uncoated Available perm., 50,,1μ Available HT 13.6mm~ 40.6mm Available size : 101.6mm~ 5.0mm CM : MPP, CH : High Flux, CK : Mega Flux CSC big toroidal cores produced by a 00 ton press are ideal for high current applications, especially in UPS, renewable energy(solar/wind), high power industrial power systems. The maximum diameter is 5mm(6.5 )OD and the electrical characteristics are the same as small toroidal cores. CSC cores are the world s biggest and strongest on the market today. CS1013 CS10 CS10 CS1033 CS13 CS13 CS1333 CS1340 CS Before Finish Dimensions(mm) After Finish Dimensions(mm) Path Cross AL Weight value (nh/n Length Section 2 ) 8% (g) Area OD(mm) Max ID(mm) Min HT(mm) Max OD(mm) Max ID(mm) Max HT(mm) Max (cm) (cm 2 ) 0μ 0μ 1μ CM(MPP core), CH(High Flux core), CK(Mega Flux core) and customer specifications are also available ::: Changsung Corporation

77 MAGNETIC POWDER CORES NOTES Magnetic Powder Cores ::: 76

78 Terminology AL Value (nh/n 2 ) The inductance (nanohenries) of a core for 1 turn winding. It is measured at peak AC flux density of 10 gauss and frequency of 10kHz. 1nH/N 2 = 1mH/(1000turns) 2 inductance in the circuit and causes selfresonance at a certain frequency. An inductor which has a smaller distributed capacitance extends a much higher self resonant freguency. So the inductor should be wound to have as small a distributed capacitance as possible. Ambient Temperature Temperature surrounding the devices or circuits. The ambient temperature is measured at 0.5inch(1.cm) away from the devices or circuits. Attenuation The ratio of output parameter (voltage, current, power, etc.) to input parameter. Unit is [db]. In the case of power, db is10log (output power / input power). In the case of current and voltage, db is log (output current /input current), log (output voltage / input voltage) respectively. Coercive Force (Hc) Refer to Hysteresis Curve. CommonMode Noise Electrical interference that is common to both lines in relation to the ground. Eddy Current When a varying electric or magnetic field passes through the conducting material, current which opposes the change of field is induced in it. This current is called eddy current. Because a conducting material has electric resistance, the eddy current results in heat loss. This is referred to as the eddy current loss. Figure 1. Eddy Current in Powder Cores Effective Permeability (μe) Refer to Permeability. Metal Powder Ceramic Layers Eddy Current Copper Loss [watts] The power loss (I 2 R) or heat generated by current (I) flowing in a winding with resistance (R). Core loss [watts] Core loss is composed of eddy current loss, hysteresis loss and residual loss. Refer to Magnetic Design Formulae. EMI The acronym for Electromagnetic Interference is EMI. Generally, EMI refers to unnecessary electrical energies such as noise. EMC Electromagnetic Compatibility Hysteresis Curve (BH Loop) Cross Sectional Area (A) The effective cross sectional area of a core available for magnetic flux. The cross sectional area listed for toroidal cores is based on bare core dimensions. Curie Temperature, Tc [ ] The transition temperature above which a core loses its ferromagnetic properties. Usually defined as the temperature at which falls to 10% of its room temperature value. i DC Resistance [ ] Resistance of winding when AC current is not applied. Differential Mode Noise Electrical interference that is not common to both lines but is present between both lines. This is also known as normal mode noise. Disaccommodation The proportional change of permeability after a disturbance of a magnetic material. It is measured at a constant temperature over a given time interval. Distributed Capacitance In an inductor, each winding behaves as a capacitor having the distributed capacitance. Distributed capacitance is parallel with Figure 2. BH Loop When the magnetic material is taken through a complete cycle of magnetization and demagnetization, the magnetic flux density in that material behaves irreversibly according to the change of the magnetizing force. The results are as shown in Figure 2. As H is increased in the neutral magnetic material, flux density B increases along the dashed line (initial magnetization curve) to the saturation point, Bs. 77 ::: Chang Sung Corporation

79 Terminology When H is now decreased, the BH loop transverses a path to Br (remanent flux density), where H is zero and the core is still magnetized. The magnetizing force H is now reversed to give a negative value. The magnetizing force required to reduce the flux Br to zero is called the coercive force(hc). Along the initial magnetization curve, B increases from the origin nonlinearly with H until the material saturates. In practice, the magnetization of a core in an excited inductor never follows this curve because the core is never in a totally demagnetized state when the magnetizing force is first applied. Flux Density, Magnetic Induction, B [Gauss ; Tesla] 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. 1T=10 4 Gauss Incremental Permeability( μ) Refer to Permeability. Inductor A passive device that prevents a variance of the current. Magnetic flux is induced in the inductor when current flows through the inductor, and the voltage induced by magnetic flux prevents the change of current. Induced voltage = L di/dt. Initial Permeability(μi) Refer to Permeability. Leakage Flux Leakage flux is the small fraction of the total magnetic flux in a transformer or common mode choke that does not contribute to the magnetic coupling of the windings of the device. The presence of leakage flux in a transformer or common mode choke is modeled as a small "leakage" inductance in series with each winding. In a multiwinding choke or transformer, leakage inductance is the inductance measured at one winding with all other windings short circuited. Litz Wire A wire made by twisting and bundling some insulated wire. It can decrease the copper loss at high frequency by reducing the skin effect. Normal Mode Noise Refer to Differential Mode Noise. Noise Unnecessary electrical energy that rises in a circuit. Operating Temperature Range The temperature at which a device can be operated normally. Above this temperature, the characteristics of the device can become inferior or the device may operate abnormally. In the case of the inductor, this temperature refers to the temperature rise by the copper loss or core loss. Refer to temperature rise. Permeability(μ) In magnetics, permeability is the ability of a material to conduct flux. The magnitude of the permeability at a given induction is a measure of the ease with which a core material can be magnetized to that induction. It is defined as the ratio of the flux density B to the magnetizing force H. Figure 3. Variation of along the Magnetization Curve Permeability : μ = B/H [Gauss/Oersted] The slope of the initial magnetization curve at any given point gives the permeability at that point. Permeability can be plotted against a typical B H curve as shown in Figure 3 Permeability is not constant, therefore its value can be stated only at a given value of B or H. There are many different kinds of permeability. Absolute Permeability(μo) Initial Permeability(μi) Slope of the initial magnetization curve at the origin, that is, the value of permeability at a peak AC flux density of 10 gauss (1 millitesla). Permeability in a vacuum Magnetic Hysteresis Refer to Hysteresis Loop. μ= B/H (Figure 4) Magnetizing Force, H [Oe ; A/m] The magnetic field strength which produces magnetic flux. The mmf per unit length. H can be considered to be a measure of the strength or effort that the magnetomotive force applies to magnetic circuit to establish a magnetic field. H may be expressed as H=NI/, where is the mean length of the magnetic circuit in meters. 1 oersted=79.58a/m Mean Magnetic Path Length( ) The effective magnetic path length of a core structure (cm). Refer to Magnetic Design Formulae. Figure 4. Initial Permeability Incremental Permeability( μ) The slope of the magnetization curve for finite values of peaktopeak flux density with superimposed DC magnetization (Figure 5). Initial permeability can be thought of as incremental permeability with 0 DC magnetization at small inductions. The incremental permeability is expressed as the slope of the BH characteristic at around the given operating point. Magnetic Powder Cores ::: 78

80 Terminology = Effective Permeability( ) If a magnetic circuit is not homogeneous(i.e. contains an air gap), the effective permeability is the permeability of a hypothetical homogeneous(ungapped) structure of the same shape, dimensions, and reluctance that would give the inductance equivalent to the gapped structure. Relative Permeability( ) Permeability of a material relative to that of free space. Maximum permeability( ) The slope of a straight line drawn from the origin tangent to the curve at its knee. (Figure 6) Figure 5. Incremental Permeability Figure 6. Maximum Permeability Rated Current Continuous DC current that can flow in the inductor. It is determined by the maximum temperature rise at the maximum storage temperature range. As rated current is related to power loss of the inductor, DC resistance of the inductor should be lowered or the inductor size should be increased in order to increase the rated current. Saturation Current The current at which the inductance decreases below a critical percent inductance (10% or % of the initial inductance) by applying DC current to an inductor. In general the critical percent inductance is 10% for ferrite cores and % for metal powder cores. The decrease of inductance is caused by the magnetic characteristics of cores. Cores can store a certain amount of flux density, but above that flux density the permeability and inductance of the cores decrease. arises between wires and between wires and cores is parallel with inductance in circuits. Above the self resonant frequency, the capacitive reactance is dominant and the inductor works like the capacitor. Skin Effect As the frequency is higher, the current flow is limited to the surface of the wire because the magnetic field in the center of the wire increases. The depth from the wire surface at which the current density at the wire surface decreases by 1/e (37%) is called "skin depth", and this is determined by the conductivity of the wire. As the frequency is higher, skin depth decreases, the reactance of wire increases and current flow is interfered. Litz wire may be used in order to decrease the skin effect. Storage Temperature Range Temperature range in which the characteristics of a device can be preserved. Remanence, Br [Gauss ; Tesla] Refer to Hysteresis Curve. Saturation The point at which the flux density B in a magnetic material does not increase with further applications of greater magnetization force H. At saturation, the slope of a material's BH characteristic curve becomes extremely small, with the instantaneous permeability approaching that of free space. (relative permeability = 1.0) Saturation Flux Density, Bs [Gauss ; Tesla] The maximum intrinsic induction possible in a material. This is the flux level at which additional Hfield produces no additional Bfield. Temperature Rise( T) The increase in surface temperature of a component in freestanding air due to the total power dissipation (both copper and core loss). Approximate temperature rise is as follows ; = Total Power Dissipation(Miliwatts) Surface Area( ) Total Power Dissipation= Copper Losses + Core Losses Self Resonant Frequency, SRF The frequency at which the resonance appears between distributed capacitance and inductance of an inductor. At this frequency, inductance and capacitance are canceled out and the inductor is almost a resistor having high impedance. Distributed capacitance that 79 ::: Chang Sung Corporation

81 Innovative Technological Advancements Special Shaped Magnetic Powder Cores Magnetic Powder Cores ::: 80

82 Research & Development Chang Sung Corporation has become a global leader through its outstanding R&D center, which is constantly striving to develop new technologies and products. In particular, CSC magnetic powder cores have raised the company s profile and competitiveness in the world market. 81 ::: Changsung Corporation

83 RESEARCH AND DEVELOPMENT The CSC product line is constantly evolving and improving through our highly advanced R&D center equipped with the most modern research facilities. EQUIPMENT BH Analyser BH Loop Tracer DC Bias Tracer Precision LCR Meter AC Power Supply Electrical Load Oscilloscope Puncture Tester Vibrating Sample Magnetometer (VSM) PFC Test Kit Impedance Analyser Scanning Electron Microscope (SEM) Optical Microscope Laser Particle Size Analyser Specific Surface Area Analyser (BET) Oxygen / Nitrogen Analyser Atomic Absorption Spectrophotometer Heat Treating Furnaces Optical Emission Spectrometer Electrolysis Analyser Thermal Analysis Equipment (DSC, TG, DTA) Constant Temperature & Humidity Chamber Universal Testing Machine (UTM) Hardness Testers, etc. VSM AC Power Supply SEM BET BH LOOP Anechoic Chamber Magnetic Powder Cores ::: 82 LCR

84 ISO/TS 949 KS Q/ISO 001 OHSAS 001 MAGNETIC POWDER CORES Offices and Factories in Korea Headquarters & Incheon Factory 68 Namchondong, Namdonggu, Incheon, Korea Tel: Fax: International Business Center 4FL, Kukje Bldg, 71, Nonhyundong, Kangnamgu, Seoul, Korea Tel: 8793 Fax: 82 Pyeongtaek Factory 840, Goryeomri, Cheongbukmyeon, Pyeongtaeksi, Gyeonggido, Korea Tel: Fax: Cheongju Factory 88 Poongjungri, Naesueup, Cheongwongun, Chungbuk, Korea Tel: Fax: Offices and Factories Overseas China Weihai Factory Changxing Road, First Industrial Complex, Huanshan RD, Economic Technological Development Zone, Weihai City, Shandong Province, China Tel: Fax: Dongguan Factory Huangkeng Industrial Area, Shilongkeng Village, LiaoBu Town, Dongguan City, Guangdong Province, China Tel: Fax: Japan Tokyo Office Bansui Ken Bldg, 5F, Toranomon 6, MinatoKu Tokyo, Japan Tel: Fax: CO