al1012k IRC - a TT electronics Company., al1012k Datasheet

al1012k

Manufacturer Part Number

al1012k

Description

Chassis Mounted Power Wirewound Resistor

Manufacturer

IRC - a TT electronics Company.

Datasheet

1.AL1012K.pdf (1 pages)

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DIMENSIONS (Inches and (mm)):

General Note

IRC reserves the right to make changes in product speciﬁcation without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print.

WIREWOUND AND FILM TECHNOLOGIES DIVISION

736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com

SPECIFICATIONS:

AL-5

AL-10

AL-25

AL-50

*All resistors have an operating temperature range of -55°C to +275°C. Derating is required

for reduced chassis mounting area and for high ambient temperatures.

**To order non-inductive styles add sufﬁx N (e.g.:ALN-5). (Divide Max. Res. Values by styles

available with extended resistance & tolerance ranges; contact factory.

Tol.

(metric)

AL-5

AL-10

AL-25

AL-50

IRC/SX

Style**

Style

AL SERIES

CHASSIS MOUNTED POWER

WIREWOUND RESISTOR

• 0.1 ohm to 180K ohm

• 5 watts to 50 watts

• ±1% tolerance

• Non-inductive winding available

• High thermal conductivity cores available

• Lead Free ROHS Compliant Construction

∗Values down to .01 ohms available. Contact factory with special applications.

RE-60G

RE-65G

RE-70G

RE-75G

Equiv.

(14.27)

(18.26)

±0.005

(11.28)

(39.7)

0.444

0.562

0.719

1.563

MIL

±0.1

IRC/SX

@ 25°C(watts)

Power Rating

±0.005

(12.45)

(15.88)

(19.84)

(21.44)

12.5

25.0

50.0

0.490

0.625

0.781

0.844

7.5

±0.1

MIL

±0.031

(15.24)

(26.97)

(49.99)

(19.1)

0.600

0.750

1.062

1.968

±0.8

Min.

0.1

(28.58)

(34.93)

(49.23)

(70.64)

±0.062

1.035

1.375

1.938

2.781

∗

±1.6

Resistance

(ohms)

180K

Max.

16K

25K

55K

(10.92)

(13.46)

(15.62)

±0.015

0.334

(8.48)

0.430

0.530

0.615

±0.4

3.32K

5.62K

12.1K

39.2K

Max.

MIL

±0.015

(16.41)

(27.43)

(28.96)

(20.3)

0.646

0.800

1.080

1.140

±0.4

DERATING:

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."

Standard Temperature Coefﬁcient of Resistance:

<1 ohm = ±90 ppm

≥1 ohm to <10 ohms = ±50 ppm

≥10 ohm = ±20 ppm

Power Rating:

5 to 50 watts depending upon style. 275°C maximum hotspot at 25°C ambient.

Conforms to MIL-R-18546. 1% maximum ∆R in 1000 hour load life. Proper

heat sinks are as follows:

Construction:

Windings are "controlled stress" wound on ground ceramic cores. Terminations

are of welded construction. Terminals are electronically welded to the end

caps for maximum strength and electrical continuity. A high temp. silicone

encapsulation is used to mold the wound assembly within the anodized

(14.22)

(15.62)

±0.015

0.320

(8.13)

0.400

(10.2)

0.560

0.615

±0.4

4 X 5 X 2 X 0.040 aluminum chassis - AL-5 and AL-10

5 X 7 X 2 X 0.040 aluminum chassis - AL-25 and AL-50

Ambient Temperature (°C)

±0.010

(1.65)

(1.91)

(2.16)

±0.25

0.065

0.075

0.085

±0.010

(3.56)

(4.83)

(7.62)

±0.25

0.140

0.190

0.260

0.300

(6.6)

±0.010

Screw mounts

on chasis

±0.25

0.078

(1.98)

0.093

0.172

(4.37)

0.196

(4.97)

(2.4)

Top surface marked

±0.005

0.093

(2.36)

0.093

0.125

(3.18)

0.125

(3.18)

(2.4)

±0.1

HOW TO ORDER:

Sample Part No.:

Type

Power

Range

Tolerance

Lead Free Construction

Complete

protection against

Molded and welded

±0.015

(1.98)

(2.59)

(2.92)

(2.71)

0.078

0.102

0.115

0.107

±0.4

AL 10 12K 0.010% LF

construction

±0.005

0.050

(1.27)

0.086

(2.18)

0.086

(2.18)

0.086

(2.18)

±0.1

TT electronics plc

Issue Preliminary

A subsidiary of

0106

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