Through-hole resisT ors g eneral Type Melf Carbon Film r esistors Normal & Miniature style MCF series FeATures Power Rating 1/6W, 1/4W, 0.4W, 1/2W, 0.6W, 1W 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 (%) The MCF Series Melf Carbon Film Resistors 100 are manufactured by coating a homogeneous 80 film of pure carbon on high grade ceramic rods. 60 SMD enabled structure. 40 20 20 40 60 80 100 120 140 160 Ambient Temperature (C) TABle 1 TeMPerATure CoeFFiCieNT sTYle MAx. V Alue o F TeMP. Coe FFiCieNT PPM/C under 1K 1K1 -47K 51K -470K 510K -1M MCF-12, MCF25S, MCF204 0 to -350 0 to -600 0 to -1,000 0 to -1,500 under 10K 11K -150K 160K -2M2 MCF-25, MCF50S, MCF207, MCF-50, MCF1WS 0 to -350 0 to -600 0 to -1,000 DiMeNsioNs Unit: mm sTYle DiMeNsioN Normal Miniature l D C Min. D MCF-12 MCF25S / MCF204 3.50.2 1.40.15 0.5 C MCF-25 MCF50S / MCF207 5.90.2 2.20.1 0.5 L MCF-50 MCF1WS 8.50.2 3.20.2 0.533 Note: eleCTriCAl ChArACTerisTiCs sTYle MCF-12 MCF25s MCF204 MCF-25 MCF50s MCF207 MCF-50 MCF1Ws Power Rating at 70C 1/6W 1/4W 0.4W 1/4W 1/2W 0.6W 1/2W 1W Maximum Working Voltage 200V 250V 300V 350V Maximum Overload Voltage 400V 500V 600V 700V Voltage Proof on Insulation 200V 500V 700V Resistance Range 10 - 1M & 0 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) 1.0%+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. >10,000M 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 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 5.0%+0.1 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%+0.1 Temperature Cycling IEC 60115-1 4.19 -55C Room Temp. +155C Room Temp. (5 cycles) 0.75%+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