Through-hole resisTors Flame-Proof Type Metal oxide Film resistors Normal & Miniature style [ rsF series ] FeATures Power Rating 1/4W, 1/2W, 1W, 2W, 3W, 5W Resistance Tolerance ±2%, ±5% T.C.R. ±300ppm/°C Flameproof Multi-layer Coating Meets UL-94V-0 Flameproof Feature Meets Overload Test UL-1412 iNTroDuCTioN The RSF Series Metal Oxide Film Flame-Proof Resistors offer excellent performance in DerATiNg CurVe applications where stability and uniformity of characteristics are desired. The normal style & For resistors operated in ambient temperatures above 70°C, power rating must be derated ‘RSF-WV’ style of RSF series are coated with in accordance with the curve below. layers of gray flame-proof lacquer, and the Rated Load (%) 70 155 235°C miniature style are coated with layers of pink 100 colors flame-proof lacquer. 80 60 40 20 50 100 150 200 250 Ambient Temperature (°C) DiMeNsioNs Unit: mm sTYle DiMeNsioN Normal Miniature l øD h ød RSF-25 RSF50S 6.3±0.5 2.4±0.2 28±2.0 0.55±0.05 ød RSF-50 RSF1WS 9.0±0.5 3.3±0.3 26±2.0 0.55±0.05 H L øD RSF100 RSF2WS 11.5±1.0 4.5±0.5 35±2.0 0.8±0.05 RSF200 RSF3WS 15.5±1.0 5.0±0.5 33±2.0 0.8±0.05 RSF3WM RSF5SS 17.5±1.0 6.5±1.0 32±2.0 0.8±0.05 RSF300 RSF5WS 24.5±1.0 8.5±1.0 38±2.0 0.8±0.05 RSF500 - 24.5±1.0 8.5±1.0 38±2.0 0.8±0.05 Note: RSF1WS (for MB Type) ød = 0.8±0.05mm

19 eleCTriCAl ChArACTerisTiCs NorMAl sTYle sTYle rsF-25 rsF-50 rsF100 rsF200 rsF3WM rsF300 rsF500 Power Rating at 70°C 1/4W 1/2W 1W 2W 3W 5W Maximum Working Voltage 200V 250V 350V 450V 500V 750V Maximum Overload Voltage 300V 400V 600V 700V 800V 1,000V Voltage Proof on Insulation 250V 350V 500V Resistance Range 1Ω - 1MΩ & for E24 series value Operating Temp. Range -55°C to +155°C Temperature Coefficient ±300ppm/°C MiNiATure sTYle sTYle rsF50s rsF1Ws rsF2Ws rsF3Ws rsF5ss rsF5Ws Power Rating at 70°C 1/2W 2W 3W 5W 5W Maximum Working Voltage 250V 300V 350V 350V 500V 700V Maximum Overload Voltage 400V 600V 800V 900V Voltage Proof on Insulation 350V 400V 500V Resistance Range 1Ω - 1MΩ & for E24 series value Operating Temp. Range -55°C to +155°C Temperature Coefficient ±300ppm/°C Note: Special value is available on request eNViroNMeNTAl ChArACTerisTiCs PerForMANCe TesT TesT MeThoD APPrAise 2.5 times RCWV for 5 sec. ±1.0%+0.05Ω for normal style Short Time Overload IEC 60115-1 4.13 (Not more than maximum Overload Voltage) ±2.0%+0.05Ω for miniature style 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 -55°C to +155°C By type Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >1,000MΩ Solderability IEC 60115-1 4.17 245±5°C for 3±0.5 Sec. 95% Min. coverage No deterioration of coatings and Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 5±0.5 Min. with ultrasonic 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) ±2.0%+0.05Ω Damp Heat Steady State IEC 60115-1 4.24 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV ±5.0%+0.05Ω 70±2°C at RCWV (or Umax., Whichever less) for 1,000 Hr. Endurance at 70°C IEC 60115-1 4.25 ±5.0%+0.05Ω (1.5Hr.on, 0.5Hr. Off) Temperature Cycling IEC 60115-1 4.19 -55°C  Room Temp.  +155°C  Room Temp. (5 cycles) ±1.0%+0.05Ω 260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the Resistance to Soldering Heat IEC 60115-1 4.18 ±1.0%+0.05Ω body Accidental Overload Test IEC 60115-1 4.26 4 times RCWV for 1 Min. No evidence of flaming or arcing Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less. Revision: 2020