MCR www.vishay.com Vishay Milwaukee Wirewound Resistors, Industrial Power, Tubular, Metal Case, MCRL FEATURES High power to size ratio Flameproof inorganic compound All welded construction Heat sink mountable to steel panel at least 10 x 10 x 0.04 (254 mm x 254 mm x 1.02 mm) Heat transfer increased by use of thermally conductive grease or epoxy Wirewound Material categorization: For definitions of compliance please see www.vishay.com/doc 99912 STANDARD ELECTRICAL SPECIFICATIONS POWER RATING POWER RATING HISTORICAL RESISTANCE RANGE TOLERANCE TERMINAL GLOBAL MODEL WITH HEAT SINK WITHOUT HEAT SINK MODEL % STYLE W W MCRL0045 12M16 45 20 1.1 to 2750 5, 10 A MCRL0070 12M40 70 40 0.2 to 22K 5, 10 H MCRL0100 12M59 100 50 0.2 to 66K 5, 10 H MCRL0125 12M89 125 65 0.25 to 76K 5, 10 H DIMENSIONS in inches (millimeters) D D WEIGHT GLOBAL AB C DISTANCE BETWEEN (TYP.) MODEL TERMINAL (REF.) g MCRL0045 1 (25.4) 1.438 (36.513) 1.875 (47.625) 5/16 0.312 33 MCRL0070 2.5 (63.5) 3 (76.2) 3.375 (85.725) 1 1/4 1.25 77 MCRL0100 3.688 (93.675) 4.125 (104.775) 4.563 (115.90) 2 7/16 2.44 108 MCRL0125 5.562 (141.275) 6 (152.4) 6.438 (163.525) 4 1/8 4.12 185 TERMINAL STYLE in inches (millimeters) A D A D C C Type A B Type H B DIMENSIONS A (3/16 LUG) H (1/4 SQC) Width (A) 0.1875 (4.7625) 0.25 (6.35) Height (B) 0.375 (9.525) 0.625 (15.875) Diameter (C) 0.13 (3.302) 0.065 (1.651) Thickness (D) 0.02 (0.508) 0.032 (0.8128) Revision: 17-Jun-14 Document Number: 31834 1 For technical questions, contact: vishaymilwaukeeresistor 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 91000MCR www.vishay.com Vishay Milwaukee TECHNICAL SPECIFICATIONS PARAMETER UNIT RESISTOR CHARACTERISTICS Power rating W 20 to 125 Resistance range 0.2 to 76K Resistance tolerance % 5 for above 1 , 10 for below 1 TCR ppm/C 400, 180, 130, 20 (varies by wattage and resistance) Operating temperature C -40 to +300 Temperature rise C 275 above an ambient of 25 C Maximum altitude f.a.s.l. (m.a.s.l.) derate above 4921 f.a.s.l. (1500 m.a.s.l.) Short-term overload (surge) 10 x rated power for 5 s Surge windings available 1/2 Maximum working voltage (P x R) Insulation resistance 1M Dielectric voltage V up to 1500 (upon request) RMS Creepage inch (mm) 0.50 (12.7) typical Terminal sleeves available for all sizes, increases creepage distance for 600 V applications Inductance H 0.2 to 800 (varies by wattage and resistance) Non-inductive winding available Terminal strength lb n/a Electrical or mechanical customization available: www.vishay.com/doc 31859 DERATING CURVE 120 100 80 60 40 20 0 0 50 100 150 200 250 300 350 25 AMBIENT TEMPERATURE IN C MATERIAL SPECIFICATIONS Element copper-nickel, nickel-chrome, iron-chrome-aluminum Core electrical porcelain Potting compound electrical cement or special high temperature silicone Standard terminals stainless steel Part marking value, date code, MRC Revision: 17-Jun-14 Document Number: 31834 2 For technical questions, contact: vishaymilwaukeeresistor 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 RATED POWER IN %