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| 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 u 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 70C FM FKN & FSQ *Fusing times not listed, may be available. Contact RFE International, Inc. for details. 235C 0 50 100 150 200 250 275C 300 350 400 Ambient Temperature (C) SPECIFICATIONS FKN & FM FSQ FM is fusible metal film FKN & FSQ is fusible wirewound Wattage Type Dimension(mm) d0.05 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 L1.0 D0.5 H3 W0.5 C3 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 +30C ~ +150C FM: 4X rated wattage for 5 sec. FKN & FSQ: 2.5X rated wattage for 5 sec. 500V megger -30C 85C for 5 cycles 70C on-off cycle 1000 hrs 40C 95@ RH on-off cycle for 1000 hrs Spec. -40C ~ +235C -55C ~ +275C 200 ppm/C(R<1 ohm440 ppm) 2% 2% 1000M ohm 1% 5% 5% PART NUMBER EXAMPLE FM 50 R - 10R - J RFE International * Tel:(949) 833-1988 * Fax:(949) 833-1788 * E-Mail Sales@rfeinc.com C2DB01 REV 2002.02.07 |
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