leaded resISTORS CFR Type Carbon Film Resistors Normal & Miniature Style [ CFR Series ] FEATURES Power Rating 1/6W, 1/4W, 1/2W, 1W, 2W, 3W Resistance Tolerance 2%, 5% T.C.R. see Table 1 DERATING CURVE For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with the curve below. INTRODUCTION The CFR Series Carbon Film Resistors are manufactured by coating a homogeneous film of pure carbon on high grade ceramic rods. After a helical groove has been cut in the resistive layer, tinned connecting leads of electrolytic copper are welded to the end-caps. The resistors are coated with layers of tan color lacquer. Rated Load (%) 70 155 C 100 80 60 40 20 20 40 60 80 100 120 140 160 Ambient Temperature (C) TABLE 1 TEMPERATURE COEFFICIENT STYLE Max. Value of Temp. Coefficient ppm/C under 100K 100K - 1M 1M - 10M CFR100, CFR200, CFR2WS, CFR3WS 350 -500 -1,500 CFR-12, CFR-25, CFR-50, CFR25S, CFR50S, CFR1WS +350 / -500 -700 -1,500 DIMENSIONS Unit: mm STYLE od H L oD DIMENSION Normal Miniature L oD H od CFR-12 CFR25S 3.40.3 1.90.2 282.0 0.450.05 CFR-25 CFR50S 6.30.5 2.40.2 282.0 0.550.05 CFR-50 CFR1WS 9.00.5 3.30.3 262.0 0.550.05 CFR100 CFR2WS 11.51.0 4.50.5 352.0 0.80.05 CFR200 CFR3WS 15.51.0 5.00.5 332.0 0.80.05 29 Note: ELECTRICAL CHARACTERISTICS STYLE CFR-12 CFR25S CFR-25 CFR50S CFR-50 Power Rating at 70C 1/6W 1/4W Maximum Working Voltage 150V 200V 250V 300V 350V 400V 500V Maximum Overload Voltage 300V 400V 500V 600V 700V 800V 1,000V Dielectric Withstanding Voltage 300V 400V 500V 700V 1,000V Resistance Range 1 - 10M & 0 for E24 series value Operating Temp. Range -55C to +155C Temperature Coefficient see Table 1 1/2W CFR1WS CFR100 CFR2WS CFR200 CFR3WS 1W 2W 3W Note: Special value is available on request ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHOD Short Time Overload JIS-C-5202 5.5 2.5 times RCWV for 5 Sec. 0.75%+0.05 Dielectric Withstanding Voltage JIS-C-5202 5.7 in V-Block for 60 Sec. By type Temperature Coefficient JIS-C-5202 5.2 -55C to +155C By type Insulation Resistance JIS-C-5202 5.6 in V-Block >1,000M Solderability JIS-C-5202 6.5 2605C for 50.5 Sec. 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 10,000 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 Hr. (1.5 Hr. on, 0.5 Hr. off) 3%+0.05 Load Life JIS-C-5202 7.10 70C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) 3%+0.05 Temperature Cycling JIS-C-5202 7.4 -55C Room Temp. +155C Room Temp. (5 cycles) 1%+0.05 Resistance to Soldering Heat JIS-C-5202 6.4 35010C for 30.5 Sec. 1%+0.05 Note: Rated Continuous Working Voltage (RCWV) = APPRAISE Power Rating x Resistance Value