document number: 30206 for tec hnical questions, contact: ww2aresistors@vishay.com www.vishay.com revision: 21-feb-11 1 wirewound resistors, precision power, low value, commercial, axial lead lvr vishay dale features ? ideal for all types of current sensing applications including switching and linear power supplies, instruments and power amplifiers ? proprietary processing technique produces extremely low resistance values ? excellent load life stability ? low temperature coefficient ? low inductance ? cooler operation for high power to size ratio ? mil-prf-49465 qualifie d, type rlv resistors can be found at: www.vishay.com/doc?30283 ? compliant to rohs directive 2002/95/ec notes (1) resistance is measured 3/8" [9 .52 mm] from the body of the re sistor, or at 1.183" [30.05 mm], 1.315" [33.40 mm], 1.675" [42.545 mm] or 2.575" [65.405 mm] spacing for the lvr01, lvr03, lvr05 and lvr10 respectively. (2) lvr01: standard resist ance values are 0.01 ? , 0.015 ? , 0.02 ? , 0.025 ? , 0.03 ? , 0.033 ? , 0.04 ? , 0.05 ? , 0.051 ? , 0.06 ? , 0.068 ? , 0.07 ? , 0.08 ? , 0.09 ? and 0.1 ? with 1 % tolerance. other resistance values may be available upon request. standard electrical specifications global model historical model power rating p 25 c w resistance range (1) ? tolerance % technology lvr01 lvr-1 1 0.01 to 0.1 (2) 1, 3, 5, 10 metal strip lvr03 lvr-3 3 0.005 to 0.2 1, 3, 5, 10 metal strip lvr05 lvr-5 5 0.005 to 0.3 1, 3, 5, 10 metal strip lvr10 lvr-10 10 0.01 to 0.8 1, 3, 5, 10 coil spacewound technical specifications parameter unit lvr01 lvr03 lvr05 lvr10 operating temperature range c - 65 to + 175 - 65 to + 275 dielectric withstanding voltage v rms 1000 1000 1000 1000 insulation resistance ? 10 000 m ? minimum dry short time overload - 5 x rated powe r for 5 s 10 x rated power for 5 s terminal strength (minimum) lb 5 10 10 10 temperature coefficient ppm/c see tcr vs. resistance value chart maximum working voltage v ( p x r ) 1/2 weight (maximum) g 0.5 2 5 11 global part number information global part numbering example: lvr055l000fs73 global model value tolerance packaging special lvr01 lvr03 lvr05 lvr10 r = decimal l = m ? (values < 0.010 ? ) r1500 = 0.15 ? 7l000 = 0.007 ? d = 0.5 % f = 1.0 % g = 2.0 % h = 3.0 % j = 5.0 % k = 10.0 % e12 = lead (pb)-free bulk e03 = lead (pb)-free lacer pack (lvr10) e70 = lead (pb)-free, tape /reel 1000 pieces (lvr01, 03) e73 = lead (pb)-free, tape/reel 500 pieces (dash number) (up to 3 digits) from 1 to 999 as applicable b12 = tin/lead bulk l03 = tin/lead lacer pack (lvr10) s70 = tin/lead, tape/ree l 1000 pieces (lvr01, 03) s73 = tin/lead, tape/reel 500 pieces historical part numbering example: lvr-5 0.005 ? 1 % s73 lvr-5 0.005 ? 1 % s73 historical model resistance value tolerance code packaging * pb containing terminations are not rohs compliant, exemptions may apply ** please see document vishay material category policy: www.vishay.com/doc?99902 vr055l000 fs73 l
www.vishay.com for technical questions, contact: ww2aresistors@vishay.com document number: 30206 2 revision: 21-feb-11 lvr vishay dale wirewound resistors, precision po wer, low value, commercial, axial lead dimensions in inches [millimeters] note (1) on some standard reel pack me thods, the leads may be trimmed to a shorter length than shown material specifications element: self-supporting nickel-chrome alloy (lvr10 also utilizes manganin) encapsulation: high temperature mold compound terminals: tinned copper part marking: dale, model, wattage, value, tolerance, date code packaging: reference wirewound through hole resistor packaging ( www.vishay.com/doc?21028 ) the improved tcr characteri stics of these lvr models from - 55 c to + 125 c (reference to + 25 c) are as follows: tcr vs. resistance value surface temperature vs. power derating 1.50 [ 3 8.10] (1) minimum a c b model dimensions in inches [millimeters] a 0.010 [0.254] b 0.010 [0.254] c 0.002 [0.051] lvr01 0.427 [10.85] 0.115 [2.92] 0.020 [0.508] lvr03 0.560 [14.22] 0.205 [5.21] 0.032 [0.813] lvr05 0.925 [23.50] 0.330 [8.38] 0.040 [1.02] lvr10 1.828 [46.43] 0.392 [9.96] 0.040 [1.02] 0.02 resistance ( ) lvr05 400 300 200 100 tcr in ppm/c lvr03 lvr01 lvr10 0.04 0.06 0.08 0.10 12 3 4 567 8 910 250 200 150 100 50 n i e r u t a r e p m e t e c a f r u s c power in w lvr03 lvr01 lvr05 lvr10 - 65 - 25 25 75 125 175 225 275 ambient temperature in c 120 100 80 60 40 20 0 % n i r e w o p d e t a r lvr01 lvr03 lvr05 lvr10 performance test conditions of test test limits thermal shock - 65 c to + 125 c, 5 cycles , 15 min at each extreme (0.2 % + 0.0005 ? ) ? r short time over load 5 x rated power (lvr01, 03, 05), 10 x ra ted power (lvr10) for 5 s (0.5 % + 0.0005 ? ) ? r low temperature storage - 65 c for 24 h (0.2 % + 0.0005 ? ) ? r high temperature exposure 250 h at + 275 c (+ 175 c for lvr01) (2.0 % + 0.0005 ? ) ? r dielectric withstanding voltage 1000 v rms , 1 min (0.1 % + 0.0005 ? ) ? r insulation resistance mil-st d-202 method 302, 100 v 1000 m ? minimum moisture resistance mil-st d-202 method 106, 7b not applicable (0.2 % + 0.0005 ? ) ? r shock, specified pulse mil-std-202 method 213, 100 g 's for 6 ms, 10 shocks (0.1 % + 0.0005 ? ) ? r vibration, high frequency frequ ency varied 10 hz to 2000 hz, 20 g peak, 2 directions 6 h each (0.1 % + 0.0005 ? ) ? r load life 2000 h at rated power, + 25 c, 1.5 h on, 0.5 h off (2.0 % + 0.0005 ? ) ? r bias humidity + 85 c, 85 % rh, 10 % bias, 1000 h (1.0 % + 0.0005 ? ) ? r
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