Product: Size: Thick Film Array Chip Resistor-SMRA Series 42x4 / 63x4 / 42x4(Concave) / 63x4(Concave) 42x8 official distributor of
Thick Film Array Chip Resistor-SMRA Series 1. Scope -This specification applies to all sizes of rectangular-type fixed chip resistors with Ruthenium-base as material. 2. Features -Small size and light weight -Reduction of assembly costs and matching with placement machines -Reliability, high quality -Suitable for both IR reflow soldering and wave soldering 3. Applications -Entertainment -Computer & Related Products -Communication Equipment -Power Equipment -Measuring Instrument 4. Construction 9 8 7 3 4 5 6 1 Alumina Substrate 4 Edge Electrode (Ag) 7 Resistor Layer (RuO 2/Ag) 2 Bottom Electrode (Ag-Pd) 5 Barrier Layer (Ni) 8 Primary Overcoat (Glass) 3 Top Electrode (Ag) 6 External Electrode (Sn) 9 Secondary Overcoat (Epoxy) 1 2 5. Equivalent Circuit Diagram SMRA-42 / 43 (R-) (S-) 6. Dimensions
S 4 7 Number of Resistors SMRA-42 / 43 SMRAA42 / 43 L W H A B C Y Weight (g) (1pcs) SMRA-42 4 2.±.1 1.±.1.45±.1.3±.±.5.22±.15.22±.15 2.817 SMRA-43 4 3.2±.15 1.6±.15.55±.±.15.8±.5.3±.15.3±.15 8.288 8 3.2±.15 1.6±.15.55±.1.35±.15.64±.5.4±.15.4±.15 9.26 SMRAA42 4 2.±.1 1.±.1.4±.1.3±.±.5.2±.1.25±.1 3.3 SMRAA43 4 3.2±.15 1.6±.15.55±.±.15.8±.5.3±.15.4±.15 1.115 7. Part Numbering SMRA- 42 F L 6 - - - -1K Product Dimensions (L W) Resistance Tolerance Function Code Packaging Code Resistance SMRA- (Convex) SMRAA (Concave) 42: 42x4 43: 63x4 82: 42x8 F: ±1% J: ±5% L: 4P2R/8P4R R: 1P8R (R-type) S: 1P8R (S-type) 6: 7 Reel 1Kpcs 7: 7 Reel 5Kpcs A: 1 Reel 1Kpcs B: 1 Reel 2Kpcs C: 13 Reel 4Kpcs D: 13 Reel 2Kpcs F: Bulk - - - -1K: 1KΩ - - -3K3: 3.3KΩ - - -1K: 1KΩ - to fill up 6 spaces 8. Standard Electrical Specifications Item Power Rating / Rated Current Operating Temp. Range Max. Operating Voltage Max. Overload Voltage Number of Resistors Resistance Range ±1% ±5% SMRA-42 1/16W 1Ω - 1MΩ -55 ~ +125 C 25V 5V 4 Jumper 1A Ω (<5mΩ) SMRA-43 1/1W 1Ω - 1MΩ -55 ~ +155 C 5V 1V 4 Jumper 1A Ω (<5mΩ) 1/16W 1Ω - 56KΩ -55 ~ +125 C 25V 5V 8 Jumper.5A Ω () SMRAA42 1/16W 1Ω - 1MΩ -55 ~ +125 C 25V 5V 4 Jumper 1A Ω (<5mΩ) SMRAA43 1/16W 1Ω - 1MΩ -55 ~ +155 C 5V 1V 4 Jumper 1A Ω (<5mΩ) Operating Voltage= (P*R) or Max. operating voltage Listed above, whichever is lower. Overload Voltage=2.5* (P*R) or Max. overload voltage Listed above, whichever is lower. TCR (PPM/ C) ±2 ±2 ±2 ±2 ±2
9. Derating Curve Power ratio (%) 1 8 6 4 2 SMRA-42 SMRAA4 2 4 6 8 1 12 14 16 Ambient Temperature ( ) SMRA-43 SMRAA43 1. Soldering Condition IR Reflow Soldering Wave Soldering (Flow Soldering) (1) Time of IR reflow soldering at maximum temperature point 26 C:1s (2) Time of wave soldering at maximum temperature point 26 C:1s (3) Time of soldering iron at maximum temperature point 41 C:5s 11. Environmental Characteristics Item Temperature Coefficient of Resistance (T.C.R.) As Spec. Requirement ±1% ±5% Jumper Short Time Overload ±(1.%+.5Ω) ±(2.%+.5Ω) Insulation Resistance 1G Endurance ±(2.%+.1Ω) ±(3.%+.1Ω) Damp Heat with Load ±(2.%+.1Ω) ±(3.%+.1Ω) Dry Heat ±(1.%+.5Ω) ±(1.5%+.1Ω) Bending Strength ±(1.%+.5Ω) ±(1.%+.5Ω) Test Method JIS C 521-1 4.8 IEC 6115-1 4.8-55 C~+125/+155 C, 25 C is the reference temperature JIS C 521-1 4.13 IEC 6115-1 4.13 2.5 times RCWV or Max. overload voltage for 5 seconds JIS C 521-1 4.6 IEC 6115-1 4.6 Max. overload voltage for 1 minute JIS C 521-1 4.25 IEC 6115-1 4.25.1 7±2 C, Max. working voltage for 1 hrs with 1.5 hrs ON and.5 hrs OFF JIS 521-1 4.24 4±2 C, 9~95% R.H., Max. working voltage for 1 hrs with 1.5 hrs ON and.5 hrs OFF JIS C 521-1 4.23 IEC 6115-1 2.23.2 at +125/+155 C for 1 hrs JIS C 521-1 4.33 IEC 6115-1 4.33 Bending once for 5 seconds with 3mm
Solderability Resistance to Soldering Heat Voltage Proof Leaching Rapid Change of Temperature >95% coverage ±(.5%+.5Ω) No breakdown or flashover ±(1.%+.5Ω) Individual leaching area 5% Total leaching area 1% ±(.5%+.5Ω) ±(1.%+.5Ω) Storage Temperature: 25±3 C; Humidity < 8%RH 12. Packaging Reel Specifications & Packaging Quantity JIS C 521-1 4.17 IEC 6115-1 4.17 245±5 C for 3 seconds JIS C 521-1 4.18 IEC 6115-1 4.18 26±5 C for 1 seconds JIS C 521-1 4.7 IEC 6115-1 4.7 1.42 times RCWV (RMS) for 1 minute JIS C 521-1 4.18 IEC 668-2-58 8.2.1 26±5 C for 3 seconds JIS C 521-1 4.19 IEC 6115-1 4.19-55 C to +125/+155 C, 5 cycles SMRA-42 SMRAA42 SMRA-43 SMRAA43 Packaging Quantity Paper 1K 2K 4K 5K 1K 2K Tape width Reel Diameter ΦA ΦB ΦC W T 7 inch 178.5±1.5 6 +1/- 13.±.2 9.±.5 12.5±.5 8mm 1 inch 254±1 1±.5 13.±.2 9.5±.5 13.5±.5 13 inch 33±1 1±.5 13.±.2 9.5±.5 13.5±.5 Paper Tape Specifications Bottom Tape Top Tape ψ D A B E F W T Paper Tape Resistor P 1 P 2 P Direction of unreeling
A B W E F P P 1 P 2 ΦD T SMRA-42 1.2±.1 2.2±.1 8.±.2 1.75±.1 3.5±.5 4.±.1 2.±.5 2.±.5 SMRA-43 1.95±.1 3.5±.1 8.±.2 1.75±.1 3.5±.5 4.±.1 4.±.5 2.±.5 1.95±.1 3.5±.1 8.±.2 1.75±.1 3.5±.5 4.±.1 4.±.5 2.±.5 SMRAA42 1.2±.1 2.2±.1 8.±.2 1.75±.1 3.5±.5 4.±.1 2.±.5 2.±.5 SMRAA43 1.95±.1 3.5±.1 8.±.2 1.75±.1 3.5±.5 4.±.1 4.±.5 2.±.5.7±.1.1.85±.1.1.85±.1.1.7±.1.1.85±.1.1 13. Marking Jumper for all: Letter 1% for SMRA-42/SMRA-43/SMRAA42/SMRAA43: 4 digits marking (non-including E24 series) Example: Resistance 1Ω 2.2KΩ 1KΩ 49.9KΩ 1KΩ marking 1 221 12 4992 13 5% for SMRA-42/SMRA-43/SMRAA42/SMRAA43: 3 digits marking in E24 E24 code Example: 11=1Ω 12=1KΩ (1 st and 2 nd are E24 code and 3 rd code is multiplier) 1 11 12 13 15 16 18 2 22 24 27 3 33 36 39 43 47 51 56 62 68 75 82 91 5% for : 4 digits marking in E24 E24 code Example: R47=47Ω R-type (1 st is R-type or S-type, 2 nd and 3 rd are E24 code, 4 th is multiplier) 1 11 12 13 15 16 18 2 22 24 27 3 33 36 39 43 47 51 56 62 68 75 82 91 14. Recommended Land Pattern SMRA-42/43 SMRAA42/43 A B C C1 I I1 P P1 SMRA-42 1.8 2.1.3 --.5 --.5 -- SMRA-43 2.85 3.1.45 --.8 --.8 -- 3.2 2.9.5.35 1.5.8.7.65 SMRAA42 1.8 2.1.3 --.5 --.5 -- SMRAA43 2.85 3.1.45 --.8 --.8 --