Chassis Mounted Power
Wirewound Resistor
Physical Data
J
M
C
L
N
E
F
B
H
G
K
A
D
Dimensions (inches and (mm))
Style
Tol.
(metric)
AL-5
A
±0.005
±0.1
0.444
(11.28)
AL-10
0.562
(14.27)
0.719
(18.26)
1.563
(39.7)
B
±0.005
±0.1
0.490
(12.45)
0.625
(15.88)
0.781
(19.84)
0.844
(21.44)
C
±0.031
±0.8
0.600
(15.24)
0.750
(19.1)
1.062
(26.97)
1.968
(49.99)
D
±0.062
±1.6
1.035
(28.58)
1.375
(34.93)
1.938
(49.23)
2.781
(70.64)
E
±0.015
±0.4
0.334
(8.48)
0.430
(10.92)
0.530
(13.46)
0.615
(15.62)
F
±0.015
±0.4
0.646
(16.41)
0.800
(20.3)
1.080
(27.43)
1.140
(28.96)
G
±0.015
±0.4
0.320
(8.13)
0.400
(10.2)
0.560
(14.22)
0.615
(15.62)
H
±0.010
±0.25
0.065
(1.65)
0.075
(1.91)
0.085
(2.16)
0.085
(2.16)
J
±0.010
±0.25
0.140
(3.56)
0.190
(4.83)
0.260
(6.6)
0.300
(7.62)
K
±0.010
±0.25
0.078
(1.98)
0.093
(2.4)
0.172
(4.37)
0.196
(4.97)
L
±0.005
±0.1
0.093
(2.36)
0.093
(2.4)
0.125
(3.18)
0.125
(3.18)
M
±0.015
±0.4
0.078
(1.98)
0.102
(2.59)
0.115
(2.92)
0.107
(2.71)
N
±0.005
±0.1
0.050
(1.27)
0.086
(2.18)
0.086
(2.18)
0.086
(2.18)
AL-25
AL-50
Power Derating Curve
AL resistors are rated to operate with a 275°C maximum hotspot under full rated power
at 25°C ambient. They must be derated for higher ambient temperature per "Wattage
vs. Ambient Temperature Derating Curve."
120
Ordering Data
Sample Part No.
IRC Type
AL
AL - 10
10RD
F
LF
Percent of Power Rating
100
Aluminum Chassis
80
60
Power
10, 25, 50
A
Range
Tolerance
J = ±5%; F = ±1%; D = ±0.5%; B = ±0.1%
40
B
C
20
Lead Free Construction
0
25
75
125
175
225
275
325
Ambient Temperature (°C)
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
AL Series Issue August 2008 Sheet 2 of 2
IRCTT [ IRC - A TT ELECTRONICS COMPANY. ]
