WSL3921, WSL5931 Vishay Dale Power Metal Strip® Resistors, Low Value (down to 0.0002 Ω), Surface Mount FEATURES • Ideal for all types of current sensing, voltage division and pulse applications including switching and linear power supplies, instruments, power amplifiers • Proprietary processing technique produces extremely low resistance values, down to 0.0002 Ω • All welded construction • Solid metal iron-chrome or manganese-copper alloy resistive element with low TCR (< 20 ppm/°C) • Very low inductance 0.5 nH to 5 nH • Low thermal EMF (< 3 μV/°C) • AEC-Q200 qualified available (1) • Compliant to RoHS Directive 2002/95/EC Note (1) Flame retardance test may not be applicable to some resistor technologies STANDARD ELECTRICAL SPECIFICATIONS GLOBAL MODEL SIZE POWER RATING P70 °C W TOLERANCE % RESISTANCE VALUE RANGE Ω RESISTANCE VALUES CURRENTLY AVAILABLE (2) Ω WEIGHT (typical) g/1000 pieces WSL3921 3921 3.0 1.0, 5.0 0.3m to 4m 0.3m, 0.5m, 1m, 2m, 3m, 4m 281 WSL5931 5931 5.0 1.0, 5.0 0.2m to 3m 0.2m, 0.3m, 0.5m, 1m, 2m, 3m 398 Note (2) Other values may be available, contact factory. TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS ppm/°C ± 225 for 0.2 mΩ, ± 175 for 0.3 mΩ and 0.5 mΩ, ± 75 for 1 mΩ to 4 mΩ Operating temperature range °C - 65 to + 170 Maximum working voltage V (P x R)1/2 Temperature coefficient GLOBAL PART NUMBER INFORMATION Global Part Numbering: WSL3921L5000FEA (WSL3921, 0.0005 Ω, ± 1 %) W S L 3 9 2 1 L 5 0 0 0 F E A GLOBAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING CODE SPECIAL WSL3921 WSL5931 L = mΩ L5000 = 0.0005 Ω F = ± 1.0 % J = ± 5.0 % EA = Lead (Pb)-free, tape/reel EK = Lead (Pb)-free, bulk (Dash number) (Up to 2 digits) From 1 to 99 as applicable ** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902 www.vishay.com 374 For technical questions, contact: [email protected] Document Number: 30110 Revision: 11-Nov-10 WSL3921, WSL5931 Power Metal Strip® Resistors, Low Value (down to 0.0002 Ω), Surface Mount Vishay Dale DIMENSIONS DIMENSIONS in inches (millimeters) MODEL H W H T 0.394 ± 0.010 0.205 ± 0.010 0.020 0.080 ± 0.010 WSL3921 (10.0 ± 0.254) (5.20 ± 0.254) (0.5) (2.00 ± 0.254) D L L WSL5931 W 0.591 ± 0.010 0.305 ± 0.010 0.020 0.157 ± 0.010 (15.0 ± 0.254) (7.75 ± 0.254) (0.5) (4.00 ± 0.254) T SOLDER PAD DIMENSIONS in inches (millimeters) MODEL d b l WSL3921 0.106 ± 0.010 (2.70 ± 0.254) 0.244 ± 0.010 (6.20 ± 0.254) 0.220 ± 0.005 (5.60 ± 0.13) WSL5931 0.205 ± 0.010 (5.20 ± 0.254) 0.344 ± 0.010 (8.75 ± 0.254) 0.220 ± 0.005 (5.60 ± 0.13) GLOBAL MODEL RESISTANCE VALUE (mΩ) “D” THICKNESS (inches) ELEMENT MATERIAL WSL3921 0.3 0.0510 Mn-Cu WSL3921 0.5 0.0300 Mn-Cu WSL3921 1.0 0.0150 Mn-Cu WSL3921 2.0 0.0270 Fe-Cr WSL3921 3.0 0.0170 Fe-Cr WSL3921 4.0 0.0130 Fe-Cr WSL5931 0.2 0.0485 Mn-Cu WSL5931 0.3 0.0300 Mn-Cu WSL5931 0.5 0.0180 Mn-Cu WSL5931 1.0 0.0330 Fe-Cr WSL5931 2.0 0.0155 Fe-Cr WSL5931 3.0 0.0105 Fe-Cr I b d Rated Power in % DERATING 120 100 80 60 40 20 0 - 65 - 50 - 25 0 25 50 75 70 100 125 150 170 Ambient Temperature in °C PERFORMANCE TEST Thermal shock CONDITIONS OF TEST TEST LIMITS - 55 °C to + 150 °C, 1000 cycles, 15 min at each extreme ± (1.0 % + 0.0005 Ω) ΔR 5 x rated power for 5 s ± (0.5 % + 0.0005 Ω) ΔR - 65 °C for 45 min ± (0.5 % + 0.0005 Ω) ΔR 1000 h at + 170 °C ± (1.0 % + 0.0005 Ω) ΔR Short time overload Low temperature storage High temperature exposure Bias humidity Mechanical shock + 85 °C, 85 % RH, 10 % bias, 1000 h ± (0.5 % + 0.0005 Ω) ΔR 100 g’s for 6 ms, 5 pulses ± (0.5 % + 0.0005 Ω) ΔR Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± (0.5 % + 0.0005 Ω) ΔR Load life 1000 h at + 70 °C, 1.5 h “ON”, 0.5 h “OFF” ± (1.0 % + 0.0005 Ω) ΔR + 260 °C solder, 10 s to 12 s dwell, 25 mm/s emergence ± (0.5 % + 0.0005 Ω) ΔR MIL-STD-202, method 106, 0 % power, 7a and 7b not required ± (0.5 % + 0.0005 Ω) ΔR Resistance to solder heat Moisture resistance PACKAGING MODEL REEL TAPE WIDTH DIAMETER PIECES/REEL CODE WSL3921 16 mm/embossed plastic 330 mm/13" 3000 EA WSL5931 24 mm/embossed plastic 330 mm/13" 1500 EA Note • Embossed carrier tape per EIA-481. Document Number: 30110 Revision: 11-Nov-10 For technical questions, contact: [email protected] www.vishay.com 375 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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