Through-hole resistors Melf Carbon Film Resistors General Type 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 CURVE For resistors operated in ambient temperatures above 70°C, power rating must be derated in accordance with the curve below. INTRODUCTION The MCF Series Melf Carbon Film Resistors are manufactured by coating a homogeneous film of pure carbon on high grade ceramic rods. SMD enabled structure. The resistors are coated with layers of lacquer. Rated Load (%) 70 155 °C 100 80 60 40 20 20 40 60 80 Ambient Temperature (°C) 100 120 140 160 TABLE 1 TEMPERATURE COEFFICIENT STYLE Max. Value of Temp. Coefficient ppm/°C MCF-12, MCF25S, MCF204 under 1KΩ 0 to -350 1K1Ω -47KΩ 51KΩ -470KΩ 510KΩ -1MΩ 0 to -600 0 to -1,000 MCF-25, MCF50S, MCF207, under 10KΩ 11KΩ -150KΩ MCF-50, MCF1WS 0 to -350 0 to -600 0 to -1,500 160KΩ -2M2Ω 0 to -1,000 DIMENSIONS Unit: mm STYLE D C L DIMENSION Normal Miniature L D C Min. MCF-12 MCF25S / MCF204 3.5±0.2 1.4±0.15 0.5 MCF-25 MCF50S / MCF207 5.9±0.2 2.2±0.1 0.5 MCF-50 MCF1WS 8.5±0.2 3.2±0.2 0.5 37 Note: ELECTRICAL CHARACTERISTICS Style MCF-12 MCF25S MCF204 MCF-25 MCF50S MCF207 MCF-50 MCF1WS Power Rating at 70°C 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 10Ω - 1MΩ & 0Ω for E24 series value Operating Temp. Range -55°C to +155°C Temperature Coefficient see Table 1 Note: Special value is available on request ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHOD APPRAISE Short Time Overload IEC 60115-1 4.13 2.5 times RCWV for 5 Sec. ±1.0%+0.05Ω 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 -55°C to +155°C By type Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >10,000MΩ Solderability IEC 60115-1 4.17 235±5°C for 3±0.5 Sec. 95% Min. coverage Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 5±0.5 Min. with ultrasonic No deterioration of 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%+0.05Ω 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%+0.1Ω Endurance at 70°C IEC 60115-1 4.25 70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) ±3.0%+0.1Ω Temperature Cycling IEC 60115-1 4.19 -55°C Room Temp. +155°C Room Temp. (5 cycles) ±0.75%+0.05Ω Resistance to Soldering Heat IEC 60115-1 4.18 260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body ±1.0%+0.05Ω Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less. Revision: 201304 88 Explanations Of Ordering Code MFR -12 F Code 7 Tolerance T F Code 8 Packing Style Code 9 Temperature Coefficient of Resistance Code 1 - 3 Series Name Code 4 - 6 Power Rating See Index -05= ød0.5mm P= ±0.02 % T = Tape/Box -06 = ød0.6mm A= ±0.05 % R = Tape/Reel - = Base on Spec. -07 = ød0.7mm B= ±0.1 % B = Bulk 52- 100R Code 10 - 12 Forming Type Code 13 - 17 Resistance Value 26- = 26mm 0R1=0.1 52- = 52.4mm 100R=100 A = ±5 ppm/°C 73- = 73mm 10K=10,000 81- = 81mm 10M=10,000,000 -08 = ød0.8mm C= ±0.25% B = ±10 ppm/°C -10 = ød1.0mm D= ±0.5 % C = ±15 ppm/°C 91- = 91mm -14 = ød1.4mm F = ±1 % S = ± 20ppm/°C F = F Type -12 = 1/6W G= ±2 % D = ±25 ppm/°C FK = FK Type -25 = 1/4W J = ±5 % E = ±50 ppm/°C FKK= FKK Type 25S = 1/4WS K= ±10 % F = ±100 ppm/°C FFK= F-form Kink -50 = 1/2W - = Base on Spec. G = ±200 ppm/°C M = M-Type Forming 50S = 1/2WS H = ±250 ppm/°C MB = M-form W/flat 100 = 1W I = ±300 ppm/°C MT = MT Type Forming 1WS = 1WS J = ±350 ppm/°C MR = MR Type 200 = 2W AV = AVIsert 2WS = 2WS PN = PANAsert 204 = 0.4W 207 = 0.6W 300 = 3W 3WS = 3WS 3WM= 3WM 400 = 4W 500 = 5W 5WS = 5WS 5SS = 5WSS 700 = 7W 7WS = 7WS 10A = 10W 20A = 20W 30A = 30W 40A = 40W 50A = 50W 10S = 10WS 15A = 15W 25A= 25W 10B = 100W 25B = 250W EXCEPTION: • Cement series: • JPW series: <Code 8>: Special packing style code B: B ulk with wirewound or metal oxide sub-assembly for resistance value W: Bulk with ceramic based wirewound sub-assembly for resistance value M: Bulk with metal oxide sub-assembly for resistance value F: Bulk with Fiberglass based wirewound sub-assembly for resistance value <Code 10-12>: Without forming code Example: SQP500JB-10R <Code 13-17>: without resistance value code Example: JPW-06-T-52-