V i s h ay I n t e r t e c h n o l o g y, I n c . WIREWOUND RESISTORS Ideal for Audio and Medical Imaging Equipment MR A Non-Magnetic, Non-Inductive, Axial-Leaded, Wirewound Resistors Key Benefits • Non-magnetic and all welded constructions greatly enhance frequency response. • High-temperature coating (> 350 °C) • Combined with non-inductive Ayrton-Perry winding, the inductive reactance and signal loss are almost totally eliminated • Ideal for the audio industry APPLICATIONS • Audio equipment • Medical equipment Resources • Datasheet: MRA - www.vishay.com/doc?31801 • Material categorization: For definitions please see www.vishay.com/doc?99912 • For technical questions contact [email protected] One of the World’s Largest Manufacturers of Discrete Semiconductors and Passive Components PRODUCT SHEET 1/2 VMN-PT0404-1403 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 Resistors, Non-Magnetic, Non-Inductive, AxialVLead i s h ay I n t e r t e c h n o l o g y, Inc. FEATURES WIREWOUND RESISTORS • High temperature coating (> 350 °C) Ideal for Audio and Medical Imaging Equipment • Non-magnetic and all welded constructions greatly enhance frequency response. Combined with non-inductive Ayrton-Perry winding the inductive reactance and signal loss are almost totally eliminated. MR A • Ideal for Audio Industry Non-Magnetic, Non-Inductive, Axial-Leaded, • Material categorization: For definitions of Wirewound Resistors compliance please see www.vishay.com/doc?99912 STANDARD ELECTRICAL SPECIFICATIONS POWER RATING (1) POWER RATING (1) TOLERANCE (2) P25 °C W P25 °C W % CHARACTERISTIC U + 250 °C CHARACTERISTIC V + 350 °C RESISTANCE RANGE WEIGHT (typical) g 1, 5, 10 0.01 to 15.0K 1.00 1, 5, 10 0.05 to 35.0K 3.87 MRA-12 MRA12 10.0 12.0 1, 5, 10 0.05 to 85.0K Notes (1) Vishay Mills MRA models have two power ratings depending on the operation temperature and stability requirements. (2) Other tolerances may be available, contact factory 5.02 GLOBAL MODEL HISTORICAL MODEL MRA-05 MRA05 4.0 5.0 MRA-10 MRA10 7.0 10.0 TECHNICAL SPECIFICATIONS PARAMETER Temperature Coefficient UNIT MRA RESISTOR CHARACTERISTICS ppm/°C ± 30 for 10 and above; ± 50 for 1.0 to 9.9 ; ± 90 for 0.5 to 0.99 Terminal Strength lb 10 minimum Dielectric Withstanding Voltage VAC 500 for MRA-05 and 1000 for MRA-10 and MRA-12 Operating Temperature Range °C Characteristic U = - 65 to + 250, Characteristic V = - 65 to + 350 Maximum Working Voltage V (P x R)1/2 GLOBAL PART NUMBER INFORMATION Global Part Numbering example: MRA-1225R00JE12 (visit www.vishay.net Vishay Dale parts numbering manual for all options) M R A - 1 2 2 5 R 0 0 J E 1 2 GLOBAL MODEL (6 digits) VALUE (5 digits) TOLERANCE (1 digit) PACKAGING CODE (3 digits) SPECIAL (up to 2 digits) (See Standard Electrical Specifications Global Model column for options) R = Decimal K = Thousand 1R500 = 1.5 1K500 = 1.5 k F = ± 1.0 % J = ± 5.0 % K = ± 10.0 % E07 = Tape/reel (MRA-10, MRA-12) E48 = Tape/reel (MRA-05) E12 = Bulk, up to 100 pc boxes (Dash Number) From 1 to 99 as applicable Historical Part Number example: MRA12W25R0J MRA12 W = STANDARD 25 5% HISTORICAL MODEL TC RESISTANCE VALUE TOLERANCE Revision: 02-May-12 Document Number: 31801 1 For technical questions, contact: [email protected] 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 PRODUCT SHEET 2/2 VMN-PT0404-1403 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