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.)
| KRL STYLE |
MIL-PRF-18546 |
POWER IN WATTS |
RANGE |
MAXIMUM |
DIELECTRIC |
|
|---|---|---|---|---|---|---|
| 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.
|
| KRL STYLE |
MIL-PRF-18546 |
A |
B |
C |
D |
E |
F |
G |
H |
J |
K |
L |
M |
N |
P |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |