FM50M Datasheet, PDF (1/1 Pages) RFE international – FUSIBLE RESISTORS FM, FKN, & FSQ Series: Fusible

FUSIBLE RESISTORS
RoHS
FM, FKN, & FSQ Series: Fusible
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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.
FUSING CHARACTERISTICS
Power
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.
•Fusing times not listed, may be available.
Contact RFE International, Inc. for details.
SPECIFICATIONS
FKN & FM
FSQ
FEATURES
•High stability, accuracy, and reliability
•Non combustible coating
•Uniform fusing time
DERATING CURVE
100
70°C
80
60
40
FM
FKN & FSQ
20
0
235°C
275°C
0
50 100 150 200 250 300 350 400
Ambient Temperature (°C)
FM is fusible metal film
FKN & FSQ is fusible wirewound
Wattage Type
Dimension(mm)
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
1W FKN1W 9
4.5
30
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
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
Range
()
0.22 - 100K
0.22 - 100K
0.22 - 100K
0.3 - 100K
0.3 - 100K
0.1 - 22
0.1 - 80
0.1 - 100
0.2 - 200
0.3 - 250
0.1 - 22
0.1 - 120
0.2 - 120
0.3 - 250
0.3 - 500
Max.
Working
Voltage
250
250
300
350
500
500
500
500
500
500
1000
1000
1000
1000
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
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<1 ohm±440 ppm)
±2%
±2%
1000M ohm
±1%
±5%
±5%
PART NUMBER EXAMPLE
FM 50 R - 10R - J
RFE International • Tel:[phone] • Fax:[phone] • E-Mail [e-mail]
C2DB01
REV 2002.02.07