Product Details

Electrical Components Wirewound Fuse Resistor

Wirewound Fuse Resistor

1,Good heat-durability. low temperature coefficient, low noise, high load power; nonflammability.
2,Can be Fusible during the stated time for protecting the circuit once wording at the required overload voltage.
3,Operating ambient temperatur: -55℃~+275℃.
4,The surface is gray white nonflammable coating and indicate a white ring at the behind of the precision color ring.
5,Resistance tolerance:±5%,±10%.

A, High heat exchanged Ceramic core.

B, Nickel Chrome or nickel an copper alloy.

C, Iron Cap.

D, Sillicon resin coating.

E, Color Ring.

Dimensions and Voltage Performance:

Part No.	Power	Resistance range	Dimensions			Max. working voltage	Max.overload voltage	Max.insulation voltage
Part No.	Power	Resistance range	L±1	D±0.5	d±0.05	Max. working voltage	Max.overload voltage	Max.insulation voltage
FKN012	1/2W	0R1-10R	9.0	3.2	0.58	150V	400V	250V
FKN01B	1W	0R1-10R	9.0	3.2	0.75	150V	400V	250V
FKN02B	2W	0R1-15R	11.0	4.5	0.75	150V	400V	350V
FKN03B	3W	0R1-22R	15.0	5.0	0.75	350V	600V	500V
FKN04B	4W	0R1-27R	17.0	6.0	0.75	350V	600V	500V
FKN05B	5W	0R127R	17.0	6.0	0.75	350V	600V	500V
FKN06B	6W	0R1-33R	25.0	8.0	0.75	500V	600V	750V
FKN07B	7W	0R1-47R	31.0	8.0	0.75	500V	600V	750V
FKN08B	8W	0R1-56R	41.0	8.0	0.75	500V	600V	750V
FKN10B	10W	0R1-56R	52.0	8.0	0.75	750V	800V	1000V

Fusing Characteristics:

Fusing Spec.	Multiple Rated power	Rated resistamce range
		<2R	2~10R	>10R
		Fusing time (s)
G	12		60	30
B	16	60	30	15
C	25	30	15	7.5
J	25

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 .	±300ppm/℃
Short time overload	1/2~4W: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≤±(2%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.