MCF-25JR-1K8

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. Rated Load (%) 70 155 °C 100 80 60 40 20 20 40 60 80 100 120 140 160 Ambient Temperature (°C) TABLE 1 TEMPERATURE COEFFICIENT STYLE Max. Value of Temp. Coefficient ppm/°C MCF-12, MCF25S, MCF204 under 1KΩ 0 to -350 MCF-25, MCF50S, MCF207, under 10KΩ MCF-50, MCF1WS 0 to -350 1K1Ω -47KΩ 51KΩ -470KΩ 510KΩ -1MΩ 0 to -600 0 to -1,000 0 to -1,500 11KΩ -150KΩ 160KΩ -2M2Ω 0 to -600 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 33 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. (Not more than maximum Overload Voltage) ±1.0%+0.05Ω 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. >10,000MΩ Solderability IEC 60115-1 4.17 245±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 (or Umax., Whichever less) for 1,000 Hr. (1.5Hr.on, 0.5Hr. 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: 2020 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Yageo: MCF-25JR-150R MCF-25JR-22R MCF-25JR-33R MCF25SJR-22K MCF25SJR-910K MCF25SJR-15K MCF-25JR100K MCF-25JR-180K MCF25SJR-470K MCF-25JR-33K MCF25SJR-330K MCF-25JR-39K MCF-25JR-47R MCF25JR-560K MCF25SJR-3K3 MCF25SJR-560K MCF-25JR-220K MCF-25JR-240R