Through-hole resistors General 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 70°C, 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 Temp. Coefficient (ppm/°C) under 100KΩ 100K Ω - 1MΩ 1MΩ - 10MΩ CFR100, CFR200, CFR2WS, CFR3WS -350~350 -500~0 -1,500~0 CFR-12, CFR-25, CFR-50, CFR25S, CFR50S, CFR1WS -350~500 -700~0 -1,500~0 DIMENSIONS Unit: mm STYLE ød H L øD DIMENSION Normal Miniature L øD H ød CFR-12 CFR25S 3.4±0.3 1.9±0.2 28±2.0 0.45±0.05 CFR-25 CFR50S 6.3±0.5 2.4±0.2 28±2.0 0.55±0.05 CFR-50 CFR1WS 9.0±0.5 3.3±0.3 26±2.0 0.55±0.05 CFR100 CFR2WS 11.5±1.0 4.5±0.5 35±2.0 0.8±0.05 CFR200 CFR3WS 15.5±1.0 5.0±0.5 33±2.0 0.8±0.05 27 Note: ELECTRICAL CHARACTERISTICS STYLE CFR-12 CFR25S CFR-25 CFR50S CFR-50 Power Rating at 70°C 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 Voltage Proof on Insulation 300V 400V 500V 700V 1,000V Resistance Range 1Ω - 10MΩ & 0Ω for E24 series value Operating Temp. Range -55°C to +155°C 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 APPRAISE Short Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. ±0.75%+0.05Ω Voltage Proof on Insulation IEC 60115-1 4.7 in V-block for 60 Sec., test voltage by type By type Temperature Coefficient IEC 60115-1 4.8 -55°C to +155°C By type Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >1,000MΩ Solderability IEC 60115-1 4.17 235±5°C for 3±0.5 Sec. 95% Min. coverage Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 5±0.5 Min. with ultrasonic No deterioration of coatings and markings Robustness of Terminations IEC 60115-1 4.16 Direct load for 10 Sec. in the direction of the terminal leads ≥2.5kg (24.5N) Periodic-pulse Overload IEC 60115-1 4.39 4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off) ±1.0%+0.05Ω Damp Heat Steady State IEC 60115-1 4.24 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV ±3.0%+0.05Ω Endurance at 70°C IEC 60115-1 4.25 70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) ±3.0%+0.05Ω Temperature Cycling IEC 60115-1 4.19 -55°C Room Temp. +155°C Room Temp. (5 cycles) ±1.0%+0.05Ω Resistance to Soldering Heat IEC 60115-1 4.18 260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body ±1.0%+0.05Ω Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less. Revision: 201304