Through-hole resisT ors Flame-Proof Type Carbon Film r esistors Normal & Miniature style FCr s eries FeATures Power Rating 1/4W, 1/2W, 1W, 2W, 3W Resistance Tolerance 2%, 5% T.C.R. see Table 1 Flameproof Multi-layer Coating Meets UL-94V-0 Flameproof Feature Meets Overload Test UL-1412 DerATiNg Cur Ve iNTroDuCTioN For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with the curve below. The FCR Series Carbon Film Flame-Proof Resistors are manufactured by coating a 70 155 C Rated Load (%) 100 homogeneous film of pure carbon on high 80 grade ceramic rods. After a helical groove has 60 been cut in the resistive layer, tinned connecting leads of electrolytic copper are welded to the 40 end-caps. The resistors are coated with layers 20 of gray color lacquer. 20 40 60 80 100 120 140 160 Ambient Temperature (C) TABle 1 TeMPerATure CoeFFiCieNT sTYle TeMP. Coe FFiCieNT (ppm/C) under 100K 100K - 1M 1M - 10M FCR100, FCR200, FCR2WS, FCR3WS -350~350 -500~0 -1,500~0 FCR-25, FCR-50, FCR50S, FCR1WS -500~350 -700~0 -1,500~0 DiMeNsioNs Unit: mm sTYle DiMeNsioN Normal Miniature l D h d d FCR-25 FCR50S 6.30.5 2.40.2 282.0 0.550.05 H L D FCR-50 FCR1WS 9.00.5 3.30.3 262.0 0.550.05 FCR100 FCR2WS 11.51.0 4.50.5 352.0 0.80.05 5th color code: black FCR200 FCR3WS 15.51.0 5.00.5 332.0 0.80.0529 Note: eleCTriCAl ChArACTerisTiCs sTYle FCr -25 FCr 50s FCr-50 FCr1W s FCr100 FCr 2Ws FCr 200 FCr3W s Power Rating at 70C 1/4W 1/2W 1W 2W 3W Maximum Working Voltage 250V 300V 350V 400V 500V Maximum Overload Voltage 500V 600V 700V 800V 1,000V Voltage Proof on Insulation 400V 500V Resistance Range 1 - 10M & for E24 series value Operating Temp. Range -55C to +155C Temperature Coefficient see Table 1 Note: Special value is available on request eNViroNMeNTAl ChArACTerisTiCs Per For MANCe TesT TesT MeTho D APPr Aise Shor t Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 sec. (Not more than maximum Overload Voltage) 0.75%+0.05 Voltage Proof on Insulation IEC 60115-1 4.7 In V-Block for 60 sec., test voltage as above table No Breakdown Temperature Coefficient IEC 60115-1 4.8 Between -55C to +155C By type Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >1,000M Solderability IEC 60115-1 4.17 2455C for 30.5 Sec. 95% Min. coverage No deterioration of Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 50.5 Min. with ultrasonic 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%+0.05 Damp Heat Steady State IEC 60115-1 4.24 402C, 90-95% RH for 56 days, loaded with 0.1 times RCWV 3.0%+0.05 Endurance at 70C IEC 60115-1 4.25 702C at RCWV (or Umax., Whichever less) for 1,000 Hr. (1.5Hr.on, 0.5Hr. Off) 3.0%+0.05 Temperature Cycling IEC 60115-1 4.19 -55C Room Temp. +155C Room Temp. (5 cycles) 1.0%+0.05 Resistance to Soldering Heat IEC 60115-1 4.18 2603C for 101 Sec., immersed to a point 30.5mm from the body 1.0%+0.05 No evidence of flaming Accidental Overload Test IEC 60115-1 4.26 4 times RCWV for 1 Min. or arcing Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less. Revision: 2020