power metal strip ? resistors, low value (down to 0.0002 ), surface mount www.vishay.com for technical questions , contact: ww2bresis tors@vishay.com document number: 30110 16 revision: 29-mar-07 WSL3921 and wsl5931 vishay dale 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 ? excellent frequency response to 50 mhz ? low thermal emf (< 3 v/c) ? 100 % lead (pb)-free and rohs compliant note ? part marking: no part marking on these parts rohs compliant standard electrical specifications global model power rating p 70 c w tolerance % resistance values available m weight (typical) g/1000 pieces WSL3921 3.0 1.0 and 5.0 0.3, 0.5, 1, 2, 3, 4 281 wsl5931 5.0 1.0 and 5.0 0.2, 0.3, 0.5, 1, 2, 3 398 technical specifications parameter unit wsl 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 operating temperature range c - 65 to + 170 maximum working voltage v ( p x r ) 1/2 global model special WSL3921 l = m f = 1.0 % ea = lead (p b )-free, tape/reel (dash nu m b er) wsl5931 l5000 = 0.0005 j = 5.0 % ek = lead (p b )-free, bu lk ( u p to 2 digits) from 1 - 99 as applica b le global part number informa tion WSL3921l5000fea resista n ce v alue tolera n ce code pac k ag i n g code global part numbering: WSL3921l5000fea
document number: 30110 for technical ques tions, contact: ww2bres istors@vishay.com www.vishay.com revision: 29-mar-07 17 WSL3921 and wsl5931 power metal strip ? resistors, low value (down to 0.0002 ) , surface mount vishay dale dimensions note ? embossed carrier tape per eia-481-1a h l t w d i d b 70 deratin g 120 100 8 0 60 40 20 0 175 150 125 100 75 50 25 0 - 25 - 50 - 65 ambient temperature in c rated power in % model dimensions in inches [millimeters] lwht WSL3921 0.394 0.010 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 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 ?d? thickness 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 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 + 175 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 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 - 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 16 mm/embossed plastic 330 mm/13" 1500 ea
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.
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