Metal Film MELF Resistor
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Metal Film MELF Resistor

The Metal Film Metal Electrode Leadless Face (MELF) resistor stands out with its unique cylindrical design, featuring metal electrodes embedded on its surface for convenient leadless connection. In terms of size specifications, it aligns with the widely used Surface Mounted Devices (SMD) resistors, providing users with a seamless replacement option.


In terms of performance, this MELF resistor boasts a rated power ranging from 0.16W to 0.5W, with a resistance span covering the vast area from 0.51 ohms to 10M ohms, meeting the precise needs of various electronic devices.


Particularly noteworthy is the significant advantage of the MELF package in terms of heat dissipation compared to traditional SMD resistors. Its efficient heat dissipation capabilities ensure stable operation of the resistor under high-intensity working conditions. Additionally, the MELF resistor is equipped with a more robust mechanical structure, effectively enhancing its tolerance to vibrations and thermal shocks, thereby further boosting its overall reliability and stability.


TypeBody Length (L, mm)Cap Diameter (D1, mm)Body Diameter (D2, mm)Soldering Spot (B, mm)Net Weight Per 1000 pcs
1/6W3.52 ± 0.151.35 ± 0.1D1+0.02/ -0.150.6 Min.17 grams
1/4W3.52 ± 0.151.35 ± 0.1D1+0.02/ -0.150.6 Min.17 grams
1/3W5.90 ± 0.202.20 ± 0.1D1+0.02/ -0.21.0 Min.66 grams
1/2W5.90 ± 0.202.20 ± 0.1D1+0.02/ -0.21.0 Min.66 grams


Power Rating At 70°CMaximum Working VoltageMaximum Overload VoltageMinimum ResistanceMaximum ResistanceResistance ToleranceAvailable Resistance Values
1/6W200V400V0, 0.51Ω10MΩ±1%, ±2%, ±5%E-96, E-48/E-24
1/4W200V400V0, 0.51Ω10MΩ±1%, ±2%, ±5%E-96, E-48/E-24
1/3W300V500V0, 0.51Ω10MΩ±1%, ±2%, ±5%E-96, E-48/E-24
1/2W300V500V0, 0.51Ω10MΩ±1%, ±2%, ±5%E-96, E-48/E-24


CharacteristicsRanges & Limits
Operating Temperature Range, °C-55 ~ +125
Temperature Coefficient, PPM / °C*±1%, ±2%, ±25, ±50, ±100
Dielectric Withstanding Voltage, VAC or DC1/6W, 1/4W: 200
1/3W, 1/2W: 500
Insulation Resistance, MΩ>10⁴
Tin Whisker (JESD201 Temperature Cycling & High Temp. / Humidity Storage), μm<5
Failure Rate in Time, pcs / 10⁹ device hours<1


In addition to Metal Film MELF Resistor, we also focus on the following resistors:
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Resistor Supplies - Jepsun Tech Corporation

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