MELF Resistor Features: 1.Low temperature coefficient, high precision, good high frequency performance. 2.Operating ambient temperature: -55~+155 3.Film the metal in Vacuum, the surface coats blue resin with the good waterproof. 4. Resistance range: ±0.1%、±0.25%、±1%、±5%.
1.Low temperature coefficient, high precision, good high frequency performance.
2.Operating ambient temperature: -55~+155
3.Film the metal in Vacuum, the surface coats blue resin with the good waterproof.
Test the resistance value at normal temperature and normal temperature added 100°C,calculate per °C resistance value change rate.
Short time overload
2.5 x rated voltage or max.overload voltage(get the lower) for 5 seconds.
At 4 x rated voltage or Max. Pulse overload voltage(get the lower)cycle 10000±200 times (1 second on,25 seconds off).
Resistance to solderling heat
Immerge into the 350±10°C tin stove for 2~3seconds.
Immerge into the 245±3°C tin stove for 2~3seconds.
The solderling area is over 95%.
At -55°C for 30min,then at +25°C for 10-15min,then at +155°C for 30min,then at +25°C for 10-15min,total 5cycles.
Load life in humidity
Overload rated voltage or Max.working voltage(get the lower )for 1000 hours(1.5hours on and half-hour off)at the 40±2°C and 90~95% relative humidity.
ΔR≤ ±(2% R0+0.05Ω)
Construction Drawing of MELF Resistor:
Rated Power Derating Curve of MELF Resistor: