Product Details

Electrical safety Fuse Resistor

1,Low temperature coefficient, high precision, low noise, and good high frequency performance.

2,Can be fusible during the stated time for protecting the circuit once wording at the required overload voltage.

3,Operating ambient temperatur: -55℃~+125℃.

4, The surface is brick red nonflammable coating and indicate a white ring at the behind of the precision color ring.

5, Resistance tolerance:±5%,±10%.

Electrical safety Fuse Resistor

Dimensions and Voltage Performance:

Fusing Characteristics:

Note:We can according to customer’s requirement to customize the other fusing characteristics resistors.

Performance Test:

Test Item	Test Condition	Performance
Temperature coefficient	Test the resistance value at normal temperature and normal temperature added 100℃,calculate per℃ resistance value change rate .	±250ppm/℃
Short time overload	1/4~4W:According 5 times rated voltage, 5~10W:According 10 times rated power to account the voltage or Max.overload voltage (get the lower) for 5 seconds.	ΔR≤±(1%R0+0.05Ω)
Pulse overload	At 4 × rated voltage or Max. pulse overload voltage (get the lower) cycle 10000±200 times(1 second on, 25 seconds off ).	ΔR≤±(1%R0+0.05Ω)
Resistance to soldering heat	Immerge into 350±10℃ tin stove for 2~3 seconds.	ΔR≤±(1%R0+0.05Ω)
Solderability	Immerge into 245±3℃ tin stove for 2~3 seconds.	The area of soldering is over 95%
Temperature cycling	At -55℃ for 30 min, then at +25℃ for 10~15 min, then at +125℃ for 30 min, then at +25℃ for 10~15 min, total 5 cycles.	ΔR≤±(1%R0+0.05Ω)
Load life in humidity	Overload rated voltage or ing voltage (get the lower) for 1000 hours (1.5 hours on and half-hour off ) at the 40±2℃ and 90~95% relative humidity.	ΔR≤±(5%R0+0.05Ω)
Load life in heat	Overload rated voltage or ing voltage (get the lower ) for 1000 hours (1.5 hours on and half-hour off) at the 70±2℃.	ΔR≤±(5%R0+0.05Ω)
Nonflammability	Respectively load AC voltage by 5,10,16 times rared power for 5 minutes.	No visible flame.