TM
WIRE WOUND RESISTORS
SILICONE COATED TYPE
Flame Retardant
Silicone Coating
Nickel - Plated
Terminations
SERIES
HI POWER
Silicone Coated Wire Wound Resistors
Industrial / Professional Applications
HIR
Alloy Resistance Wire, wound
On Ceramic Substrate
Highly stable
10 W to 400 Watts
R 25 to 100 K
Useful for inexpensively dissipating large amounts of power
in DC or low frequency AC circuits.
APPLICABLE STANDARDS
JSS - 50402 (Pattern RFHT -2), IS - 8909 (Type FRP4)
IEC - Pub 266 and Pub 266A [Type - 2E]
MIL - R 26, Char V or Char U
(depending on resistance tolerance)
W
φId
H
PHYSICAL CONFIGURATION
L
d
D
HTR
TYPE
POWER
RATING
at 70°C
DIMENSIONS (mm)
L
+3
D
+2
d
+1
φ
Id
H
W
+0.35 +0.3 [min]
MOUNTING
HARDWARE
AVAILABLE
RESISTANCE
RANGE
min
max
R-10A
R-10B
R-15A
R-15B
R-20A
R-20B
R-25A
R-25B
R-40A
R-40B
R-50A
R-50B
R-60A
R-60B
10W
10W
15W
15W
20W
20W
25W
25W
40W
40W
50W
50W
60W
60W
27.0
27.0
40.0
40.0
60.0
60.0
75.0
75.0
75.0
75.0
100.0
100.0
115.0
115.0
15.0
15.0
15.0
15.0
15.0
15.0
15.0
15.0
26.0
26.0
26.0
26.0
26.0
26.0
7.7
7.7
7.7
7.7
7.7
7.7
7.7
7.7
14.3
14.3
14.3
14.3
14.3
14.3
4.75 1.4
5.0 3.0
4.75 1.4
5.0 3.0
4.75 1.4
5.0 3.0
4.75 1.4
5.0 3.0
4.75 1.4
5.0 3.0
4.75 1.4
5.0 3.0
6.35 1.65
8.0 4.3
6.35
7.0
6.35
7.0
6.35
7.0
6.35
7.0
6.35
7.0
6.35
7.0
7.0
8.0
101/301
101/301
101/301
101/301
101/301
101/301
101/301
101/301
102/303
102/303
102/303
102/303
102/303
102/303
R25
R25
1R0
1R0
1R6
1R6
2R0
2R0
3R9
3R9
5R5
5R5
6R1
6R1
1K0
1K0
3K0
3K0
5K0
5K0
10K
10K
15K
15K
20K
20K
25K
25K
D-Dimensions given are indicative and could exceed tolerances given depending on resistance value being wound.
TM
WIRE WOUND RESISTORS
SILICONE COATED TYPE
HIR
PHYSICAL CONFIGURATION
W
φId
H
d
L
D
HTR
TYPE
R-80A
R-80B
R-100A
R-100B
R-120A
R-120B
R-140A
R-140B
R-200A
R-200B
R-300A
R-300B
R-400A
R-400B
POWER
RATING
at 70°C
80W
80W
100W
100W
120W
120W
140W
140W
200W
200W
300W
300W
400W
400W
DIMENSIONS (mm)
L
+3
130.0
130.0
150.0
150.0
165.0
165.0
200.0
200.0
250.0
250.0
250.0
250.0
330.0
330.0
D
+2
26.0
26.0
33.2
33.2
33.2
33.2
33.2
33.2
33.2
33.2
45.0
45.0
45.0
45.0
d
+1
14.3
14.3
19.1
19.1
19.1
19.1
19.1
19.1
19.1
19.1
24.0
24.0
24.0
24.0
MOUNTING
RESISTANCE
HARDWARE
RANGE
φ
Id
H
W
max
+0.35 +0.3 [min]
AVAILABLE
min
6.35
8.0
6.35
8.0
6.35
8.0
6.35
8.0
6.35
8.0
6.35
8.0
6.35
8.0
1.65
4.3
1.65
4.3
1.65
4.3
1.65
4.3
1.65
4.3
1.65
4.3
1.65
4.3
7.0
8.0
7.0
8.0
7.0
8.0
7.0
8.0
7.0
8.0
7.0
8.0
7.0
8.0
102/303
102/303
103/303
103/303
103/303
103/303
103/303
103/303
103/303
103/303
104/304
104/304
104/304
104/304
6R8
6R8
11R
11R
12R
12R
15R
15R
20R
20R
26R
26R
36R
36R
35K
35K
40K
40K
47K
47K
56K
56K
68K
68K
75K
75K
100K
100K
D-Dimensions given are indicative and could exceed tolerances given depending on resistance value being wound.
*
Resistor types suffixed with ‘A’ are compatible with Amp F 187 connectors or Amp 250 connectors.
MOUNTING SPECIFICATIONS
HORIZONTAL THRU-BOLT
VERTICAL THRU-BOLT
SCREW
CERAMIC CENTERING
WASHER
B
1.3mm (max)
Y
C
Z
LOCKWASHER
NUT
9.2mm (min)
H
Core Length (L)
Plus ‘X’
BRACKET
TYPE
101
102
103
104
MOUNTING
Y
Z
H
C
B
SLOT
+1.0mm +2mm +2mm +1.0mm
+2mm +2mm
12.2
19.5
31.5
48.0
21.83
24.50
30.0
31.5
25.4
5.5 x 8.5
19.05
34.92
45.5
53.98
82.0
BRACKET X (APPROXIMATE)
TYPE
(mm)
301
303
304
11.5
15.0
16.0
32.75 5.5 x 11.11 19.50
35.0
7.1 x 11.11 22.22
56.88 7.1 x 11.11 23.22
TM
WIRE WOUND RESISTORS
SILICONE COATED TYPE
HIR
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
Test
Resistance tolerance
Performance Requirements
+ 10% [K]; + 5% [J], +2%[G], +1%[F]
Rated dissipation [%]
DERATING CURVE
Rated ambient temperature at 70°C full power dissipation
[ see derating curve]
Di-electric withstanding
voltage
Insulation resistance
Temperature co-efficient
Short time overload
Moisture resistance
Load life
Max
∆R+[1%+R05]
>1000 M
+ 100 ppm/ °C
[For low values TCR will be higher]
100
Char V
40
Char U
Max
∆R+[
2%+R05]
Max
∆R+
[5%+R05]
Max
∆R+
[<5%+R05]
0
25 70
175
225 275
350
Ambient temperature [°C]
Notes :
1) Resistance values below and above the shown resistance range are possible on request.
2) Non-inductive types in this series are possible.
3) Dimensions given are to be used as a guide only, they can be varied to a certain extent due to
technical reasons. For example, larger terminals may be used for very low values.
TYPICAL APPLICATIONS
(1) Grid resistor (2) Voltage dropping resistor (3) Bias supply resistor (4) High voltage bleeder resistor in power
supplies (5) Voltage divider networks (6) Filament dropping resistor (7) Load resistor (8) Shunt resistor.
ORDERING INFORMATION
HIR
R20A
10R
J
101 or 301
TYPE OF MOUNTING
HARDWARE
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
Note :
In case non-inductive type is required, please pre-fix HTR type with 'N' e.g. NR-20A
The Words - “Applicable Standards” do not necessarily signify certification to that standard, however the
tests mentioned are carried out on the broad based guidelines set out in these standards.
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