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Heat Sink Power Resistors

The AT Series Heat Sink Power Resistors were designed for chassis mounting, providing pwer ratings of up to 50 watts. These resistors meet all requirements of MIL-PRF-18546.

Features:

  • Chassis mounting utilized for high power to size ratio
  • Std Tolerances: 5%, 3%, 1%. Available to .05%
  • RoHS compliant, Pb-Free construction available
  • Temperature Coefficient: 90 PPM/°C less than 1Ω; 50 PPM/°C 1Ω to 10Ω; 30 PPM/°C 10Ω to 100Ω ; 20 PPM/°C 100Ω and above.
  • Operating Temperature Range: -55°C to 250°C
  • Specify "N" in front of the style for noninductive winding. (Divide maximum resistance by 2.)

Derating Curve

 


KRL STYLE

MIL-PRF-18546

POWER IN WATTS

RANGE
RESISTANCE

MAXIMUM
WORKING
VOLTAGE

DIELECTRIC
RMS

KRL

MIL

AT-5

RE-60

7.5

5

0.1Ω - 25KΩ

160V

1000VAC

AT-10

RE-65

12.5

10

0.1Ω - 45KΩ

265V

1000VAC

AT-25

RE-70

25

20

0.1Ω - 95KΩ

550V

1000VAC

AT-50

RE-75

50

30

0.1Ω - 275KΩ

1250V

2000VAC

Proper Heat Sinks:
4"x6"x2"x.040" Aluminum chassis for AT-5 and AT-10.
5"X7"x2"x.040" Aluminum chassis for AT-25 and AT-50.

Diagram

KRL STYLE

MIL-PRF-18546

A
± .010

B
± .010

C
± .031

D
± .062

E
± .015

F
± .015

G
± .015

H
± .010

J
± .010


± .010


± .005

M
± .015

N
± .005

P
± .062

AT-5

RE-60

.444

.490

.600

1.125

.334

.646

.320

.065

.133

.078

.093

.078

.050

.262

AT-10

RE-65

.562

.625

.750

1.375

.420

.800

.390

.075

.200

.093

.093

.102

.086

.312

AT-25

RE-70

.719

.781

1.062

1.938

.550

1.080

 .562

 .075

 .265

 .172

 .125

 .115

 .086

.438

AT-50

RE-75

1.563

.844

1.968

2.781

.630

1.140

.610

.088

.305

.196

.125

.107

.086

.406


Phone: 603-668-3210 | Fax: 603-624-0634 | Email: sales@krlbantry.com
© 2007 KRL Bantry Components, Inc. 160 Bouchard Street, Manchester, NH 03103-3399 U.S.A.