metal film resistors, power, surface mount www.vishay.com for technical questions, contact: ww2aresistors@vishay.com document number: 30104 296 revision: 03-dec-10 wsf vishay dale features ? molded encapsulation ? wraparound compliant terminations eliminate risk of solder fillet cracking ? solderable terminations ? excellent stability at di fferent environmental conditions ? high power ratings (up to 2 w) ? 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. notes ? part marking: 1/2 w - dale, value; 1 w - model, value, tole rance, date code; 2 w - dale, m odel, value, tolerance, date code. (2) e96 values only. (3) resistance values above 31.25 k are limited to 250 v maximum working voltage. (4) 50 ppm/c and 25 ppm/c available. * pb containing terminations are not rohs compliant, exemptions may apply ** please see document ?vishay material category policy?: www.vishay.com/doc?99902 standard electrical specifications global model size inch power rating p 70 c w tolerance % resistance range encapsulation wsf2012 2012 0.5 0.5, 1, 5 5.0 to 1.43k (2) epoxy wsf2515 2515 1.0 0.5, 1, 5 10 to 10k thermoplastic wsf4527 4527 2.0 (3) 0.5, 1, 5 10 to 100k thermoplastic technical specifications parameter unit wsf2012 wsf2515 wsf4527 temperature coefficient ppm/c 100 (4) 100 (4) 100 (4) dielectric withstanding voltage v ac > 500 > 500 > 500 insulation resistance > 10 9 operating temperature range c - 65/+ 175 - 65/+ 175 - 65/+ 150 maximum working voltage v ( p x r ) 1/2 ( p x r ) 1/2 ( p x r ) 1/2 (3) weight/1000 pieces (typical) g 90 165 760 global part number information global part numbering example: wsf25151k500jkta (preferred numbering format) global model value tolerance tcr packaging special wsf2012 wsf2515 wsf4527 r = decimal k = thousand 100r0 = 100 1k000 = 1 k d = 0.5 % f = 1.0 % g = 2.0 % h = 3.0 % j = 5.0 % k = 10 % e = 25 ppm/c h = 50 ppm/c k = 100 ppm/c ea = lead (pb)-free, tape/reel ek = lead (pb)-free, bulk ta = tin/lead , tape/reel (r86) ba = tin/lead, tape/reel, bulk (b43) (dash number) (up to 2 digits) from 1 to 99 as applicable historical part numbering example: wsf2515 1.5 k 5 % 100 ppm/c r86 (will continue to be accepted for tin/lead product only) wsf2515 1.5 k 5 % 100 ppm/c r86 historical model resistance value tolerance code temperature coefficient packaging sf25151k5 w 00jkta
document number: 30104 for technical questions, contact: ww2aresistors@vishay.com www.vishay.com revision: 03-dec-10 297 wsf metal film resistors, power, surface mount vishay dale dimensions note ? embossed carrier tape per eia-481. w l t h w 1 l a b model dimensions in inches (millimeters) lhtw w 1 wsf2012 0.200 0.020 (5.08 0.508) 0.096 0.015 (2.44 0.381) 0.040 0.010 (1.02 0.254) 0.125 0.005 (3.18 0.127) 0.050 0.005 (1.27 0.127) wsf2515 0.250 0.020 (6.35 0.508) 0.110 0.015 (2.79 0.381) 0.045 0.010 (1.14 0.254) 0.150 0.005 (3.81 0.127) 0.098 0.005 (2.49 0.127) wsf4527 0.455 0.020 (11.56 0.508) 0.167 0.010 (4.24 0.254) 0.100 0.010 (2.54 0.254) 0.275 0.005 (6.98 0.127) 0.215 0.005 (5.46 0.127) model solder pad dimensions in inches (millimeters) ab l wsf2012 0.085 (2.16) 0.070 (1.78) 0.080 (2.03) wsf2515 0.090 (2.29) 0.115 (2.92) 0.120 (3.05) wsf4527 0.155 (3.94) 0.230 (5.94) 0.205 (5.21) performance test conditions of test test limits thermal shock - 55 c to + 150 c, 1000 cycles, 15 min at each extreme (1.0 % + 0.05 ) r short time overload 5 x rated power for 5 s (0.5 % + 0.05 ) r low temperature storage - 65 c for 24 h (0.5 % + 0.05 ) r high temperature exposure 1000 h at + 175 c (150 c for wsf4527) (1.0 % + 0.05 ) r bias humidity + 85 c, 85 % rh, 10 % bias, 1000 h (0.5 % + 0.05 ) r moisture resistance mil-std-202 method 106, 0 % power, 7a and 7b not required (0.5 % + 0.05 ) r mechanical shock 100 g ?s for 11 ms, 5 pulses (0.5 % + 0.05 ) r vibration frequency varied 10 hz to 500 hz in one min, 3 directions, 9 h (0.5 % + 0.05 ) r load life 1000 h at rated power, + 70 c, 1.5 h ?on?, 0.5 h ?off? (1.0 % + 0.05 ) r resistance to solder heat + 260 c solder, 10 s to 12 s dwell, 25 mm/s emergence (0.5 % + 0.05 ) r packaging model reel tape width diameter pieces/reel code wsf2012 12 mm/embossed plastic 330 mm/13" 2000 ea/ta wsf2515 16 mm/embossed plastic 330 mm/13" 2000 ea/ta wsf4527 24 mm/embossed plastic 330 mm/13" 1200 ea/ta temperature rise 200 150 100 50 0 0 0.5 1.0 1.5 2.0 power in w wsf2012 wsf2515 wsf4527 temperature rise in c deratin g 120 100 8 0 60 40 20 0 - 65 - 25 0 2 55 07 5 100 125 150 175 200 ambient t emperature in c 70 w sf2012 wsf2515 wsf4527 rated power in %
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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