MR500 series www.vishay.com vishay mills revision: 17-aug-12 1 document number: 31816 for technical questions, contact: ww2aresistors@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 wirewound resistor, ultra precision, epoxy molded, axial lead features ? resistance values up to 250 k ? ? resistance tolerances down to 0.01 % ? temperature coefficients down to 2 ppm/c ? material categorization: for definitions of co mpliance please see www.vishay.com/doc?99912 standard electrical specifications global model power rating p 25 c w resistance range ? resistance range ? maximum working voltage v 0.01 %, 0.02 %, 0.1 % 0.25 %, 0.5 %, 1 % mr503 0.06 10 to 75k 1 to 75k 75 mr508 0.08 10 to 150k 1 to 150k 100 mr510 0.10 10 to 250k 1 to 250k 100 mr512 0.10 10 to 250k 1 to 250k 100 global part number information global part numbering example: mr50336r000fae66 (visit www.vishay.net sap parts manual for all options) global model (5 digits) value (6 digits) tolerance (1 digit) tc (1 digits) packaging code (3 digits) special (up to 2 digits) (see standard electrical specifications global model column for options) r = decimal k = thousand m = million 1r5000 = 1.5 ? 1k5000 = 1.5 k ? 1m0000 = 1 m ? t = 0.01 % q = 0.02 % a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % a = standard, 10 to 30 (w) b = 3900 (q) c = 4500 (m) d = 6000 (n) g = 5 j = 2 e66 = lead (pb)-free bulk pack (dash number) from 1 to 99 as applicable s = 0.025 " terminal historical part numb er example: mr503w36r0f mr503 w = standard 36 ? 1 % historical model tc resistance value tolerance r50336r 000fa e m 6 6
MR500 series www.vishay.com vishay mills revision: 17-aug-12 2 document number: 31816 for technical questions, contact: ww2aresistors@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 in inches [millimeters] note (1) 0.025" [0.635] available, th is is called out by putting an s in the special section of the part number material specifications element: nickel-chrome alloy, ot her materials available depending on tc requirements core: molded epoxy encapsulant: epoxy standard terminals: 100 % matte tinned copper part marking: mills, model, value, tolerance, date code note ? due to resistor size limitations some resistors will have minimal information marked on parts derating global model dimensions in inches [millimeters] l 0.025 [0.635] d 0.005 [0.127] ld 0.002 [0.051] mr503 0.210 [5.33] 0.100 [2.54] 0.020 [0.508] mr508 0.260 [6.60] 0.125 [3.18] 0.020 [0.508] (1) mr510 0.375 [9.52] 0.125 [3.18] 0.020 [0.508] mr512 0.312 [7.92] 0.156 [3.96] 0.020 [0.508] l d ld rated power in % ambient temperature in c 100 80 60 40 20 0 20 40 60 80 100 120 140 160 0 120 140 160 180 1 %, 0.5 %, 0.1 % tolerance 0.05 %, 0.02 % tolerance 0.01 % tolerance technical specifications parameter unit MR500 resistor characteristics temperature coefficient ppm/c 10 > 100 ? ; 20 for 10 ? to 100 ? ; 30 for 1 ? to 9.99 ? terminal strength lb 4.5 dielectric withstanding voltage v ac 750 operating temperature range c - 55 to 145 maximum working voltage v ( p x r ) 1/2
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