Through-hole resisT ors g eneral Type Carbon Film r esistors Normal & Miniature style CFr s eries FeATures Power Rating 1/6W, 1/4W, 1/2W, 1W, 2W, 3W Resistance Tolerance 2%, 5% T.C.R. see Table 1 DerATiNg Cur Ve For resistors operated in ambient temperatures above 70C, power rating must be derated in accordance with the curve below. iNTroDuCTioN 70 155 C Rated Load (%) 100 The CFR Series Carbon Film Resistors are manufactured by coating a homogeneous 80 film of pure carbon on high grade ceramic 60 rods. After a helical groove has been cut in 40 the resistive layer, tinned connecting leads of 20 electrolytic copper are welded to the end- caps. The resistors are coated with layers of tan 20 40 60 80 100 120 140 160 Ambient Temperature (C) color lacquer. TABle 1 TeMPerATure CoeFFiCieNT sTYle TeMP. Coe FFiCieNT (ppm/C) under 100K 100K - 1M 1M - 10M CFR100, CFR200, CFR2WS, CFR3WS -350~350 -500~0 -1,500~0 CFR-12, CFR-25, CFR-50, -500~350 -700~0 -1,500~0 CFR25S, CFR50S, CFR1WS DiMeNsioNs Unit: mm sTYle DiMeNsioN Normal Miniature l D h d CFR-12 CFR25S 3.40.3 1.90.2 282.0 0.450.05 d CFR-25 CFR50S 6.30.5 2.40.2 282.0 0.550.05 H L D 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 0.80.0525 Note: eleCTriCAl ChArACTerisTiCs sTYle CFr -12 CFr 25s CFr -25 CFr 50s CFr-50 CFr1W s CFr100 CFr 2Ws CFr 200 CFr 3Ws Power Rating at 70C 1/6W 1/4W 1/2W 1W 2W 3W 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 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 Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less. Revision: 2020