HIGH POWER WIRE WOUND RESISTOR
HM Series: Metal-Clad, High Wattage
FEATURES
• Non-Flammable
• High Wattage
• Metal-Clad
PART NUMBER EXAMPLE
HM 2 A 80W-10R-J-250
Series
Mounting Slots
Type
Wattage
Wire Length (mm)
Tolerance
J=5%, K=10%
Resistance
A Type
Low profile
B Type
Narrow base
<C>
<D>
H
(14AWG)
Mounting Slot E = 5.2mm
SPECIFICATIONS
Part #
Watts
60
80
100
120
150
200
300
400
500
600
800
1,000
1,000
A+2 B+2
115
140
165
190
215
165
215
265
240
335
400
400
400
100
125
150
175
200
150
200
250
225
320
385
385
385
Type A
Type B
D+1 F+1 G+2 H+1 C+1 D+1 F+1 G+2 H+1
40
75
40 20
80
40
100
40 20
105
°
40 45ÿ° 125
40 20
130
40
150
60 30
65
°
40
175
40 20 68ÿ° 180
60
130
60 30
115
60
180
60 30
165
60
230
60 30
215
°
°
80 60ÿ° 195
80 40 75ÿ° 200
°
60
300
60 30 68ÿ° 285
°
80
355
80 40 75ÿ° 360
°
100
345
50 100 78ÿ° 360
°
100
345 80
50 100 78ÿ° 360 30
Resistance
Range
¿
0.1 ~ 10k
0.1 ~ 10k
0.1 ~ 10k
0.15 ~ 15k
0.15 ~ 15k
0.3 ~ 20k
0.5 ~ 30k
0.5 ~ 30k
0.5 ~ 30k
1 ~ 50k
1 ~ 50k
1 ~ 100k
1 ~ 100k
HM1_
HM2_
C+1
20
20
20
20
20
30
30
30
40
30
40
50
50
H
RFE International
• Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail Sales@rfeinc.com
C2E04
REV 2007.04.12
HIGH POWER WIRE WOUND RESISTOR
HM Series: Metal-Clad, High Wattage
ELECTRICAL SPECIFICATION
Characteristics
Resistance and Tolerance
Resistance nominal
1 <R
1 >R
Limits
Resistance Tolerance
±5% (J)
±10% (K)
Temperature coefficient
Power rating load
Short-time overload
Insulation resistance
Dielectric withstanding voltage
±200ppm/°C max.
R/R<±(1%+0.05 )
(Temperature) 350°C max
1000% rated power 5 seconds
R/R<±(2%+0.05 )
500Vdc 100M
min
2000Vac 1 minute
ELECTRICAL CURVES
Power Derating Curve
120
300
Temperature Rise
100
250
80
(°C) Temperatures Rise
(%) Derating Curve
200
60
150
40
100
20
50
0
-50
0
50
100
150
200
0
0
25
50
75
100
(°C) Ambient Temperature
(%) Percent Rated Load
RFE International
• Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail Sales@rfeinc.com
C2E04
REV 2007.04.12
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