www.vishay.com for technical questions , contact: ww2aresis tors@vishay.com document number: 31067 164 revision: 22-nov-07 sr vishay dale wirewound resistors, open air, current sense, low value features ? open air design ? low resistance values for all types of current sensing, voltage divi sion and pulse applications including switching and linear supplies, instrumentation and power amplifiers ? all welded construction ? solid metal nickel-chrome or copper-nickel alloy resistive element ? solderable terminations ? very low inductance ? lead (pb)-free version is rohs compliant * pb containing terminations are not rohs compliant, exemptions may apply standard electrical specifications model power rating p 70 c w tolerance % resistance range SR1 1.0 1, 5 0.005 - 0.03 sr3 3.0 1, 5 0.005 - 0.05 sr5 5.0 1, 5 0.004 - 0.05 technical specifications parameter unit sr resistor characteristics temperature coefficient ppm/c 0.004 - 0.005 = 300 0.0051 - 0.0099 = 175 0.01 - 0.05 = 100 operating temperature range c - 65 to + 275 maximum continuous current a ( p / r ) 1/2 sap ordering information (part number 18 digits) global part numbering example: sr55l000je14 global model value tolerance packaging special SR1 sr3 sr5 l = m (below 0.01 ) r = decimal 5l000 = 0.005 r0100 = 0.01 f = 1.0 % j = 5.0 % k = 10 % e14 = lead (pb)-free bulk b14 = tin/lead bulk (dash number) (up to 3 digits) from 1 - 999 as applicable a v aila b le p b -free rohs* compliant e3 l000je1 5 s 5 r 4
document number: 31067 for technical ques tions, contact: ww2ares istors@vishay.com www.vishay.com revision: 22-nov-07 165 sr wirewound resist ors, open air, current sense, low value vishay dale dimensions in inches [millimeters] material specifications element: nickel-chrome or copper-nickel alloy depending on resistance value terminals: tinned copper encapsulation: none marking: none f e e f a c b a c SR1 sr3 and sr5 0.112 [2.85] max. 0.050 0.010 [1.27 0.254] 0.312 [7.95] typ. model dimensions in inches [millimeters] abcef SR1 0.450 + 0.020 [11.43 + 0.508] - 0.125 0.030 [3.18 0.762] 0.070 [1.78] 0.040 0.002 [1.02 0.051] sr3 0.600 + 0.040/- 0.020 [15.24 + 1.020/- 0.508] 1.0 maximum [25.4 maximum] 0.065 + 0.010/- 0.005 [1.65 + 0.254/- 0.127] sr5 0.800 + 0.040/- 0.020 [20.32 + 1.020/- 0.508] derating - 65 - 25 25 75 125 175 225 275 ambient temperature in c 0 20 40 60 8 0 100 120 70 rated power in % performance test conditions of test test limits temperature cycling - 55 c to + 125 c, 1000 cycles, 15 min at each extreme (1.0 % + 0.0005 ) r low temperature storage - 65 c for 24 h (0.5 % + 0.0005 ) r high temperature exposure 1000 h at + 275 c (2.0 % + 0.0005 ) r bias humidity + 85 c, 85 % rh, 10 % bias, 1000 h (1.0 % + 0.0005 ) r mechanical shock 100 g?s for 11 ms, 5 pulses (0.2 % + 0.0005 ) r vibration frequency varied 10 to 2000 hz in 1 min, 3 directions, 12 h (0.2 % + 0.0005 ) r load life 1000 h at rated power, + 70 c, 1.5 h ?on?, 0.5 h ?off? (2.0 % + 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
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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