leaded resISTORS Professional type Metal Film Resistors Miniature Style [ MF0 Series ] FEATURES Power Rating 0.4W, 0.6W Resistance Tolerance 1% T.C.R. 50ppm/C DERATING CURVE For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with the curve below. INTRODUCTION The MF0 Series Metal Film Professional Resistors are manufactured using vacuum sputtering system to deposit multiple layers of mixed metals alloy and passivative materials onto a carefully treated high grade ceramic substrate. After a helical groove has been cut in the resistive layer, tinned connecting leads of electrolytic copper are welded to the endcaps. The resistors are coated with layers of blue color lacquer. Rated Load (%) 70C 100 80 60 40 20 20 40 60 80 100 120 140 160 180 Ambient Temperature (C) DIMENSIONS Unit : mm STYLE od H L oD DIMENSION MiniatureL oD H od MF0204 3.40.3 1.90.2 282.0 0.450.05 MF0207 6.30.5 2.40.2 282.0 0.550.05 Note : ELECTRICAL CHARACTERISTICS STYLE MF0204 MF0207 Power Rating at 70 C 0.4W 0.6W Maximum Working Voltage 250V 350V Maximum Overload Voltage 500V 700V Dielectric Withstanding Voltage 300V 500V Resistance Range 1 ~ 10M & 0 for E24 & E96 series value Operating Temp. Range - 55C to + 155C Temperature Coefficient 50ppm/C * Below or over this resistance range on request. ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHOD APPRAISE Short Time Overload JIS-C-5202 5.5 2.5 Times RCWV 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 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 260C 5C for 5 0.5 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 JIS-C-5202 6.1 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 RCWV 10000 Cycles (1 Sec. On, 25 Sec. off) 1.0%+0.05 Load Life in Humidity JIS-C-5202 7.9 402C , 90~95% RH at RCWV for 1,000 Hrs. (1.5 Hrs. on , 0.5 Hrs. off) 1.5%+0.05 Load Life JIS-C-5202 7.10 70C at RCWV for 1,000 Hrs. (1.5 Hrs. on 0.5 Hrs. off) 1.5%+0.05 Temperature Cycling JIS-C-5202 7.4 -55CgRoom Temp.g+155CgRoom Temp. for 5 Cycles 0.75%+0.05 Resistance to Soldering Heat JIS-C-5202 6.4 350C 10C for 30.5 Seconds 0.25%+0.05 * Rated Continuous Working Voltage (RCW V)= Power Rating x Resistance Value