FKN500FR-73-0R75

leaded resISTORS Fusible & Flame-Proof Type Wirewound Resistors Normal & Miniature Style [ FKN Series ] FEATURES Power Rating 1/4W, 1/2W, 1W, 2W, 3W, 4W, 5W, 7W Resistance Tolerance ±1%, ±5% T.C.R. ±350ppm/°C Flameproof Multi-layer Coating Meets UL-94V-0 Flameproof Feature Meets Overload Test UL-1412 DERATING CURVE INTRODUCTION The resistor element is a resistive wire which is wound in a single layer on a ceramic rod, with tinned connecting wires of electrolytic copper welded to the end-caps. The ends of the resistive wire and the leads are connected to the caps by welding. The resistors are coated with layers of green color flame-proof lacquer. Overload protection without risk of fire. Wide range of overload currents. For resistors operated in ambient temperatures above 40°C, power rating must be derated in accordance with the curve below. Rated Load (%) 40 70 155 275 °C 100 3W-7WS 1/4W-3WS 80 60 40 20 50 100 150 200 250 300 Ambient Temperature (°C) FUSING CHARACTERISTICS R≤2.0 Ω Fusing time within 60 seconds at 36 times of rated power R>2.0 Ω Fusing time within 60 seconds at 25 times of rated power Fusing residual resistive value at least 100 times rated resistance DIMENSIONS Unit: mm ød H L øD 5th color code: white STYLE DIMENSION Normal Miniature L øD H ød FKN-25 FKN50S 6.3±0.5 2.4±0.2 28±2.0 0.55±0.05 FKN-50 FKN1WS 9.0±0.5 3.3±0.3 26±2.0 0.55±0.05 FKN100 FKN2WS 11.5±1.0 4.5±0.5 35±2.0 0.8±0.05 FKN200 FKN3WS 15.5±1.0 5.0±0.5 33±2.0 0.8±0.05 FKN5WS 17.5±1.0 6.5±0.5 32±2.0 0.8±0.05 FKN7WS 24.5±1.0 8.0±0.5 38±2.0 0.8±0.05 FKN300 FKN400 FKN500 Note: FKN1WS ( for MB Type ) ød = 0.8±0.05 mm 59 ELECTRICAL CHARACTERISTICS Normal STYLE STYLE FKN-25 FKN-50 FKN100 FKN200 Power Rating at 40°C Power Rating at 70°C 1/4W 1/2W Voltage Proof 200V 300V Resistance Range (±1%) Resistance Range (±5%) 2.5 Ω - 22 Ω 0.5 Ω - 47 Ω Operating Temp. Range -40°C to +155°C Temperature Coefficient ±350ppm/°C FKN300 FKN400 FKN500 3W 4W 5W 1W 2W 0.5 Ω - 100 Ω 0.47 Ω - 150 Ω 0.56 Ω - 330 Ω 1 Ω - 620 Ω 0.5 Ω - 100 Ω 0.47 Ω - 150 Ω 0.56 Ω - 330 Ω 1 Ω - 620 Ω Note: Special value is available on request MINIATURE STYLE STYLE FKN50S FKN1WS FKN2WS FKN3WS Power Rating at 40°C Power Rating at 70°C 1/2W 1W Voltage Proof 200V 300V Resistance Range (±1%) Resistance Range (±5%) 2.5 Ω - 22 Ω Operating Temp. Range -40°C to +155°C Temperature Coefficient ±350ppm/°C FKN5WS FKN7WS 5W 7W 2W 3W 0.47 Ω - 62 Ω 0.47 Ω - 150 Ω 0.47 Ω - 240 Ω 0.56 Ω - 330 Ω 1 Ω - 620 Ω 0.47 Ω - 62 Ω 0.47 Ω - 150 Ω 0.47 Ω - 240 Ω 0.56 Ω - 330 Ω 1 Ω - 620 Ω Note: Special value is available on request ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHOD Short Time Overload IEC 60115-1 4.13 10 times rated power for 5 Sec. ±2.0%+0.05 Ω Voltage Proof 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. >100M Ω 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) Damp Heat Steady State IEC 60115-1 4.24 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV ±5.0%+0.05 Ω 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) ±5.0%+0.05 Ω Temperature Cycling IEC 60115-1 4.19 -55°C  Room Temp.  +155°C  Room Temp. (5 cycles) ±1.0%+0.05 Ω 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%+0.05 Ω Accidental Overload Test IEC 60115-1 4.26 4 times RCWV for 1 Min. No evidence of flaming or arcing Note: Rated Continuous Working Voltage (RCWV) =  APPRAISE Power Rating x Resistance Value