Through-hole resisT ors Professional & Flame-Proof Type Metal Film r esistors Miniature style FM0 series FeATures Power Rating 0.4W, 0.6W Resistance Tolerance 1%, 5% 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 FM0 Series Metal Film Professional & For resistors operated in ambient temperatures above 70C, power rating must be derated Flame-Proof Resistors are manufactured using in accordance with the curve below. a vacuum sputtering system to deposit multiple 70 155 C Rated Load (%) layers of mixed metal alloys and passivative 100 materials onto a carefully treated high grade 80 ceramic substrate. After a helical groove has 60 been cut in the resistive layer, tinned connecting 40 leads of electrolytic copper are welded to the 20 end-caps. The resistors are coated with layers of light green color lacquer. 20 40 60 80 100 120 140 160 Ambient Temperature (C) DiMeNsioNs Unit: mm sTYle DiMeNsioN Miniature l D h d d FM0204 3.40.3 1.90.2 282.0 0.450.05 H L D FM0207 6.30.5 2.40.2 282.0 0.550.0513 Note: eleCTriCAl ChArACTerisTiCs sTYle FM0204 FM0207 Power Rating at 70C 0.4W 0.6W Maximum Working Voltage 200V 300V Maximum Overload Voltage 400V 600V Voltage Proof on Insulation 300V 500V Resistance Range 1 - 4M7 & 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 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) 0.25%+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 1.5%+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) 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: 2020