• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Physical Data

Sample Part No.

IRC Type

AL

Power

10, 25, 50

Range

Tolerance

J = ±5%; F = ±1%; D = ±0.5%; B = ±0.1%

Lead Free Construction

Ordering Data

AL - 10

10RD

F

LF

Chassis Mounted Power

Wirewound Resistor

Dimensions (inches and (mm))

Style

Tol.

(metric)

AL-5

A

±0.005

±0.1

0.444

(11.28)

B

±0.005

±0.1

0.490

(12.45)

C

±0.031

±0.8

0.600

(15.24)

D

±0.062

±1.6

1.035

(28.58)

E

±0.015

±0.4

0.334

(8.48)

F

±0.015

±0.4

0.646

(16.41)

G

±0.015

±0.4

0.320

(8.13)

H

±0.010

±0.25

0.065

(1.65)

J

±0.010

±0.25

0.140

(3.56)

K

±0.010

±0.25

0.078

(1.98)

L

±0.005

±0.1

0.093

(2.36)

M

±0.015

±0.4

0.078

(1.98)

N

±0.005

±0.1

0.050

(1.27)

AL-10

0.562

(14.27)

0.625

(15.88)

0.750

(19.1)

1.375

(34.93)

0.430

(10.92)

0.800

(20.3)

0.400

(10.2)

0.075

(1.91)

0.190

(4.83)

0.093

(2.4)

0.093

(2.4)

0.102

(2.59)

0.086

(2.18)

AL-25

0.719

(18.26)

0.781

(19.84)

1.062

(26.97)

1.938

(49.23)

0.530

(13.46)

1.080

(27.43)

0.560

(14.22)

0.085

(2.16)

0.260

(6.6)

0.172

(4.37)

0.125

(3.18)

0.115

(2.92)

0.086

(2.18)

AL-50

1.563

(39.7)

0.844

(21.44)

1.968

(49.99)

2.781

(70.64)

0.615

(15.62)

1.140

(28.96)

0.615

(15.62)

0.085

(2.16)

0.300

(7.62)

0.196

(4.97)

0.125

(3.18)

0.107

(2.71)

0.086

(2.18)

J

E

F

H

G

D

B

M

C

A

K

N

L

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."

AL Series Issue August 2008 Sheet 2 of 2

Power Derating Curve

120

100

80

60

40

20

0

25

75

125

175

225

275

Ambient Temperature (°C)

325

Aluminum Chassis

A

B

C