wsl3921, wsl5931 www.vishay.com vishay dale revision: 10-jan-14 1 document number: 30110 for technical questions, contact: ww2bresistors@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 power metal strip ? resistors, low value (down to 0.0002 ? ), 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 ? ? 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 v/c) ? aec-q200 qualified available (1) ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 note (1) flame retardance test may not be applicable to some resistor technologies note (2) other values may be available, contact factory . available standard electrical specifications global ? model size power rating p 70 c w tolerance % resistance value range ? resistance values currently available (2) ? 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 technical specifications parameter unit resistor characteristics temperature coefficient ppm/c 225 for 0.2 m ? , 175 for 0.3 m ? and 0.5 m ? , 75 for 1 m ? to 4 m ? element tcr ppm/c < 20 operating temperature range c -65 to +170 maximum working voltage v ( p x r ) 1/2 global part number information global part numbering: wsl3921l5000fea (wsl3921, 0.0005 ? , 1 %) global model resistance value tolerance code packaging code special wsl3921 wsl5931 l = m ? l5000 = 0.0005 ? 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 w s l 3 9 2 1 l 5 0 0 0 f e a
wsl3921, wsl5931 www.vishay.com vishay dale revision: 10-jan-14 2 document number: 30110 for technical questions, contact: ww2bresistors@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 dimensions derating - ambient temperature derating - terminal temperature example: wsl3921 0.0005 ? example: wsl5931 0.0005 ? h l t w d i d b am b ient temperature in c rate d power in % 170 125 100 70 25 0 -25 -50 -65 50 120 100 80 60 40 20 0 150 model dimensions in inches (millimeters) lwht wsl3921 0.394 0.010 (10.0 0.254) 0.205 0.010 (5.20 0.254) 0.020 (0.5) 0.080 0.010 (2.00 0.254) wsl5931 0.591 0.010 (15.0 0.254) 0.305 0.010 (7.75 0.254) 0.020 (0.5) 0.157 0.010 (4.00 0.254) model solder pad dimensions in inches (millimeters) db 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 (m ? ) 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 terminal temperature t k in c p / p norm in % 180 160 140 120 80 60 40 20 0 100 120 100 80 60 40 20 0 stability < 1.0 % stability < 0.5 % terminal temperature t k in c p / p norm in % 180 160 140 120 80 60 40 20 0 100 120 100 80 60 40 20 0 stability < 1.0 % stability < 0.5 %
wsl3921, wsl5931 www.vishay.com vishay dale revision: 10-jan-14 3 document number: 30110 for technical questions, contact: ww2bresistors@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 note ? embossed carrier tape per eia-481. performance test conditions of test test limits thermal shock -55 c to +150 c, 1000 cycles, 15 min at each extreme (1.0 % + 0.0005 ? ) ? r short time overload 5 x rated power for 5 s (0.5 % + 0.0005 ? ) ? r low temperature storage -65 c for 45 min (0.5 % + 0.0005 ? ) ? r high temperature exposure 1000 h at +170 c (1.0 % + 0.0005 ? ) ? r bias humidity +85 c, 85 % rh, 10 % bias, 1000 h (0.5 % + 0.0005 ? ) ? r mechanical shock 100 g s for 6 ms, 5 pulses (0.5 % + 0.0005 ? ) ? r vibration frequency varied 10 hz to 2000 hz in 1 min, 3 directions, 12 h (0.5 % + 0.0005 ? ) ? r load life 1000 h at +70 c, 1.5 h on, 0.5 h off (1.0 % + 0.0005 ? ) ? r resistance to solder heat +260 c solder, 10 s to 12 s dwell, 25 mm/s emergence (0.5 % + 0.0005 ? ) ? r moisture resistance mil-std-202, method 106, 0 % power, 7a and 7b not required (0.5 % + 0.0005 ? ) ? r 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
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