FRN, FKN, and FSQ Series are designed to act as an ordinary resistor under normal circuit conditions, and as a fuse under fault conditions. It is specially spiraled to provide the fusible function with flame retardant coating. Applications are widely used in constant voltage designed, overload protection, applicable for battery chargers, TV sets, cordless phones, and PC/CPU coolers. Token provides metal/carbon film (FRN), wirewound (FKN), and cement type (FSQ).
fusible,resistors

Metal Film Fusible Resistor FRN - Dimension (mm)
Metal Film Fusible Resistor
Type Rated
Wattage		 Dimension (mm) Resistance
Range		 Dielectric
Withstanding
Voltage
L ± 1.5 D ± 1 H ± 3 d ± 0.05
FRN 1/4W
1/2W
1W
2W
3W		 6
6
9
11
15		 2.3
2.3
3.0
4.0
5,0		 26
26
26
26
35		 0.40~0.50
0.50~0.55
0.50~0.55
0.75~0.80
0.75~0.80		 0.22Ω~100KΩ
0.22Ω~100KΩ
0.22Ω~100KΩ
0.3Ω~100KΩ
0.3Ω~100KΩ		 300V
300V
350V
500V
500V

Wirewound Fusing Resistors FKN - Dimension (mm)
Wirewound Fusing Resistors
Type Rated
Wattage		 Dimension (mm) Resistance
Range		 Dielectric
Withstanding
Voltage
L ± 1.5 D ± 1 H ± 3 d ± 0.05
FKN 1W
2W
3W
5W
6W		 9
11
15
17
24		 4.5
5.0
5.5
6.5
8.5		 26
26
35
35
38		 0.50~0.55
0.75~0.80
0.75~0.80
0.75~0.80
0.75~0.80		 0.1Ω~22Ω
0.1Ω~60Ω
0.1Ω~100Ω
0.2Ω~200Ω
0.3Ω~250Ω		 500V
500V
500V
500V
500V

Fusible Cement Resistors FSQ - Dimension (mm)
Fusible Cement Resistors
Type Rated
Wattage		 Dimension (mm) Resistance
Range		 Dielectric
Withstanding
Voltage
L ± 1.5 H ± 0.5 W ± 0.5 H ± 3 d ± 0.05
FSQ 2W
3W
5W
7W
10W		 18
22
22
35
48		 7
8
9
9
9		 7
8
10
10
10		 35
35
35
35
35		 0.50~0.55
0.75~0.80
0.75~0.80
0.75~0.80
0.75~0.80		 0.1Ω~22Ω
0.1Ω~120Ω
0.2Ω~120Ω
0.3Ω~250Ω
0.3Ω~500Ω		 1000V
1000V
1000V
1000V
1000V

Electrical Performance
Test Items Condition Spec.
Operating Temp. -30°C~155°C  
Resistance Temp. Coeff. -30°C~150°C ± 200PPM / °C
Short Time Overload 2 times of rated voltage for 5 sec. ± 2 %
Temp. Cycle -30°C~85°C for 5 cycles ± 1 %
Load Life 25°C on-off cycle 1,000 hrs. ± 5 %
Moisture-Proof Load Life 40°C 95°C RH on-off cycle 1,000 hrs. ± 5 %
Solder Pot 270°C for 3 sec. ± 1 %
Incombustibility 16 times of rated wattage for 5 min. not flamed

Fusing Characteristics
POWER WATTAGE FUSING TIME
16 × Rated Wattage Within 2 min
24 × Rated Wattage Within 1 min
32 × Rated Wattage Within 30 sec.

How to Order
FRN 1/2W 0.47R J TB
Part Number
FRN
FKN
FSQ
Rated Power
(W)
Resistance Value
(Ω)
R47 0.47Ω
47R 47Ω
470R 470Ω
4K7 4.7KΩ
47K 47KΩ
Resistance Tolerance
(%)
J ±5%
Package
P Bulk
TB Taping Box

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