FUSIBLE RESISTORS FM, FKN, & FSQ Series: Fusible
INTRODUCTION
The fusible resistor contains two functions in one package. It's a resistor under normal conditions and a fuse when subjected to higher than normal current.
RoHS
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FEATURES
•High stability, accuracy, and reliability •Non combustible coating •Uniform fusing time
FUSING CHARACTERISTICS
Fusing Time Minimum Nominal Maximum 16 X Wattage 3 Sec. 30 Sec. 1 Min. 20 2 Sec. 15 Sec. 30 Sec. 24 1 Sec. 5 Sec. 10 Sec. 28 0.8 Sec. 3 Sec. 7 Sec. 32 0.8 Sec. 2 Sec. 4 Sec. Power
Rated Load (%)
80 60 40 20 0
DERATING CURVE
100
70°C
FM
FKN & FSQ
•Fusing times not listed, may be available. Contact RFE International, Inc. for details.
235°C
0 50 100 150 200 250
275°C
300 350 400
Ambient Temperature (°C)
SPECIFICATIONS
FKN & FM FSQ
FM is fusible metal film FKN & FSQ is fusible wirewound
Wattage Type Dimension(mm) d±0.05 0.6 0.65 0.65 0.8 0.8 0.65 0.8 0.8 0.8 0.8 0.65 0.8 0.8 0.8 0.8 Resistance Max. Range Working () Voltage 0.22 - 100K 250 0.22 - 100K 250 0.22 - 100K 300 0.3 - 100K 350 0.3 - 100K 500 0.1 - 22 500 0.1 - 80 500 0.1 - 100 500 0.2 - 200 500 0.3 - 250 500 0.1 - 22 1000 0.1 - 120 1000 0.2 - 120 1000 0.3 - 250 1000 0.3 - 500 1000 Dielectric Withstanding Voltage 300 300 500 500 500 500 500 500 500 500 1000 1000 1000 1000 1000 Std Tolerance ±% 5, 10 5, 10 5, 10 5, 10 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10 2, 5, 10
L±1.0 D±0.5 H±3 W±0.5 C±3 1/2W FM50M 6.8 2.6 30 1/2W FM50 9 3.5 30 1W FM100 9 4 30 2W FM200 11 4.5 30 3W FM300 15 5.5 30 30 1W FKN1W 9 4.5 2W FKN2W 11 5 30 3W FKN3W 13 5.5 30 4W FKN4W 17 6.5 38 5W FKN5W 19 6.5 38 2W FSQ2W 18 7 7 36 3W FSQ3W 22 8 8 36 5W FSQ5W 22 9 10 36 7W FSQ7W 35 9 10 36 10W FSQ10W 48 9 10 36 •Standard tolerance is ±5% and ±10% for values below 0.5
ELECTRICAL PERFORMANCE
Test Items Operating Temperature Resistance Temp. Coeff. Short Time Overload Insulation Resistance Temperature Cycle Load Life Moisture-Proof Load Life Condition FM FKN & FSQ +30°C ~ +150°C FM: 4X rated wattage for 5 sec. FKN & FSQ: 2.5X rated wattage for 5 sec. 500V megger -30°C 85°C for 5 cycles 70°C on-off cycle 1000 hrs 40°C 95@ RH on-off cycle for 1000 hrs Spec. -40°C ~ +235°C -55°C ~ +275°C ±200 ppm/°C(R
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