Products

Metal Film Resistors

Features

1. Low temperature coefficient ,high precision ,and good high frequency performance .
2. Operating ambient temperature:-55°C~+155°C .
3. Film the metal in Vacuum, the surface coating is green resin with the good waterproof .
4. Resistance tolerance:±1%,±5%.

Test Item

Test Condition

Performance

Temperature Coefficient

The resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate.

±300ppm/°C

Short Time overload

10×rated voltage or Max. overload voltage(get the lower) for 5 seconds.

R≤±(0.5%+0.05Ω)

Pulse overload

At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off).

R≤±(1%+0.05Ω)

Resistance to soldering Heat

Immerge into the 350±10°C tin stove for 2~3seconds.

R≤±(0.5%+0.05Ω)

Solderability

Immerge into the 245±3°C tin stove for 2~3seconds.

The soldering area is over 95%

Temperature cycling

At -55°C for 30 min. ,then at+25°C for 10~15°C,then at +125°C for 30 min., then at +25°C for 10~15 min., total 5cycles.

R≤±(0.5%+0.05Ω)

Load life in humidity

Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 40±2°C and 90~95% relative humidity.

R≤±(2%+0.05Ω)

Load life in heat

Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 70±2°C.

R≤±(2%+0.05Ω)