leaded resISTORS MFR Type Metal Film Resistors Normal & Miniature Style [ MFR Series ] FEATURES Power Rating 1/6W, 1/4W, 1/2W, 1W, 2W Resistance Tolerance 0.1%, 0.25%, 0.5%,1% T.C.R. 15ppm/C, 25ppm/C, 50ppm/C, 100ppm/C DERATING CURVE INTRODUCTION 70C 100 Rated Load (%) 80 The MFR Series Metal Film Resistors are manufactured using vacuum sputtering system to deposit multiple layers of mixed metals and passivative materials onto a carefully treated high grade ceramic substrate, the resistors are coated with layers of blue lacquer. 60 40 20 20 40 60 80 100 120 140 160 180 Ambient Temperature (C) HOT-SPOT TEMPERATURE Surface Temp. Rise (C) Measuring Position 200 MFR2WS 150 100 50 MFR200 MFR1WS MFR100 MFR-50 MFR50S MFR25S MFR-25 MFR-12 0 25 50 75 Applied Load, % of RCWV 100 DIMENSIONS Unit : mm STYLEDIMENSION Normal od H L oD MiniatureL oD H od MFR-12 MFR25S 3.40.3 1.90.2 282.0 0.50.05 MFR-25 MFR50S 6.30.5 2.40.2 282.0 0.60.05 MFR-50 MFR1WS 9.00.5 3.30.3 262.0 0.60.05 MFR100 MFR2WS 11.51.0 4.50.5 352.0 0.80.05 MFR200 - 15.51.0 5.00.5 332.0 0.80.05 Note : ELECTRICAL CHARACTERISTICS Style MFR-12 MFR25S MFR-25 MFR50S Power Rating at 70C 1/6W 1/4W Operating Temp. Range -55C to +155C Maximum Working Voltage 200V 200V Maximum Overload Voltage 400V Dielectric Withstanding Voltage 300V Value Range 0.5%, 1% 10~1M Value Rang 0.1%, 0.25% 100~100K Temperature Coefficient (by Type) 15ppm/C, 25ppm/C, 50ppm/C, 100ppm/C MFR-50 MFR1WS MFR100 MFR2WS MFR200 1/2W 1W 2W 250V 300V 350V 400V 500V 500V 500V 400V 500V 600V 700V 800V 1000V 1000V 1000V 400V 500V 500V 500V 700V 1000V 1000V 1000V * Resistance range for standard resistance, below or over this resistance on request. ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHODAPPRAISE Short Time Overload JIS-C-5202 5.5 2.5 Times RCW V for 5 Seconds (0.25%+0.05) Dielectric Withstanding Voltage JIS-C-5202 5.7 in V-Block for 60 Seconds by Type Temperature Coefficient of Resistance JIS-C-5202 5.2 -55C to +155C by Type Insulation Resistance JIS-C-5202 5.6 in V-Block >10000M Solderability JIS-C-5202 6.5 2355C for 50.5 Seconds 95% Min. Coverage Resistance to Solvent JIS-C-5202 6.9 IPA for 1 Min. with Ultrasonic No Deterioration of Coatings and Markings Terminal Strength Direct load for 10 Sec. in The Direction of The Terminal Leads 2.5kg (24.5N) Pulse Overload JIS-C-5202 5.8 4 Times RCW V 10000 Cycles (1 Sec. on , 25 Sec. off) (1%+0.05) Load Life in Humidity JIS-C-5202 7.9 402C, 90~95% RH at RCWV for 1000 Hrs. (1.5 Hrs. on , 0.5 Hrs. off ) (1.5%+0.05) Load Life JIS-C-5202 7.10 70C at RCWV for 1000 Hrs. (1.5 Hrs. on , 0.5 Hrs. off) (1.5%+0.05) Temperature Cycling JIS-C-5202 7.4 -55CRoom Temp.+155CRoom Temp. for 5 Cycles (0.75%+0.05) Resistance to Soldering Heat JIS-C-5202 6.4 350C10C for 30.5 Seconds (0.25%+0.05) * Rated Continuous Working Voltage (RCW V)= Power Rating x Resistance Value