Through-hole resisT ors Flame-Proof Type Metal Film Resistors Normal & Miniature Style FMF Series FeATures Power Rating 1/4W, 1/2W, 1W, 2W, 3W Resistance Tolerance 1% T.C.R. 50ppm/C, 100ppm/C Flameproof Multi-layer Coating Meets UL-94V-0 Flameproof Feature Meets Overload Test UL-1412 iNTroDuCTioN DerATiNg Cur Ve The FMF Series Metal Film Flame-Proof For resistors operated in ambient temperatures above 70C, power rating must be derated Resistors are manufactured using a vacuum in accordance with the curve below. sputtering system to deposit multiple layers of 70 155 C Rated Load (%) mixed metal alloys and passivative materials 100 onto a carefully treated high grade ceramic 80 substrate. After a helical groove has been cut 60 in the resistive layer, tinned connecting leads of 40 electrolytic copper are welded to the end-caps. 20 The resistors are coated with layers of gray color lacquer. Ambient Temperature (C) 20 40 60 80 100 120 140 160 DiMeNsioNs Unit: mm s TYle DiMeNsio N Normal Miniature l D h d d FMF-25 FMF50S 6.30.5 2.40.2 282.0 0.550.05 FMF-50 FMF1WS 9.00.5 3.30.3 262.0 0.550.05 H L D FMF100 FMF2WS 11.51.0 4.50.5 352.0 0.80.05 FMF200 FMF3WS 15.51.0 5.00.5 332.0 0.80.0511 Note: eleCTriCAl ChArACTerisTiCs s TYle FMF-25 FMF50s FMF-50 FMF1Ws FMF100 FMF2Ws FMF200 FMF3Ws 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 & 0 for E24 & E96 series value Operating Temp. Range -55C to +155C Temperature Coefficient 50ppm/C, 100ppm/C Note: Special value is available on request eNViroNMeNTAl ChArACTerisTiCs Per For MANCe Tes T Tes T MeTho D APPr Aise Shor t Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. 0.25%+0.05 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 -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 2355C 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 1.5%+0.05 Endurance at 70C IEC 60115-1 4.25 702C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) 1.5%+0.05 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 0.25%+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: 201304