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power resistor aluminum housed - ah series

power resistor aluminum housed - ah series

power,resistor

features

  • high power rating , small size and ultra precision.
  • standard winding & non-inductive winding types.
  • high stability , strong construction.
general specification:
  • wattage range: 6 styles to choose ranging from 5 to 250 watts.
  • resistance tolerance: 10%, 5%, 3%, 2%, 1%, 0.5%
  • operating temperature range : -55% to +275°c
aluminum housed ah resistors - materials
encapsulant: s: silicone, c: cement.
end caps: stainless steel
core: ceramic steatite or alumina
housing: aluminum with hard anodic coating
element: copper-nickel alloy, nickel-chrome alloy or manganese copper
standard terminals: 5~50w tinned terminals , 100~250w threaded terminals.

ah 5w~50w dimensions (unit: mm)
aluminum housed ah 5w~50w dimensions
type dimensions(mm)
a b c d e f g h j k l m n p
± 1.0 ± 1.0 ± 1.0 ± 2.0 ± 1.0 ± 1.0 ± 1.0 ± 0.8 ± 1.0 ± 0.8 ± 0.5 ± 0.5 ± 0.2 ± 0.8
ah-5 11.2 125 15.2 28.6 8.5 16.4 8.1 1.7 3.8 2 2.4 1.5 1.3 6.7
ah-5n 11.2 125 15.2 28.6 8.5 16.4 8.1 1.7 3.8 2 2.4 1.5 1.3 6.7
ah-10 14.2 15.9 19 34.9 10.7 20.3 9.9 1.9 4.2 2.4 2.4 2 2.2 7.95
ah-10n 14.2 15.9 19 34.9 10.7 20.3 9.9 1.9 4.2 2.4 2.4 2 2.2 7.95
ah-25 18.2 19.8 27 49.2 14 27.4 13.9 1.9 5.9 4.4 3.2 1 2.2 11.1
ah-25n 18.2 19.8 27 49.2 14 27.4 13.9 1.9 5.9 4.4 3.2 1 2.2 11.1
ah-50 40 21.4 50 70.6 16 29 15.5 2.2 6.6 5 3.2 2 2.2 10.3
ah-50n 40 21.4 50 70.6 16 29 15.5 2.2 6.6 5 3.2 2 2.2 10.3
notice: all values might be changed or modified, please consult factory for details.
ah-100, ah-100n dimensions (unit: mm)
aluminum chassis resistors ah-100, ah-100n dimensions non-inductive
notice: all values might be changed or modified, please consult factory for details.
ah-250, ah-250n dimensions (unit: mm)
power aluminum resistor ah-250, ah-250n dimensions non-inductance
notice: all values might be changed or modified, please consult factory for details.
ahs wirewound aluminum housed - electrical specification
type mil 25°c rated power (w) resistance range (Ω)
industry military resistance tolerance
(± %)
resistance range
(Ω)
temperature coefficient
(±ppm/°c)
ahs-5 re60g 5 5 0.1, 0.25, 0.5 10~1k 25
0.5, 1 1.0~3.32k 25, 50
5, 10 0.1~3.32k 100, 250
10 0.01~3.32k 100, 250
ahs-5n re60n 5 5 1, 5 10~200 25, 50
5 1.0~860 100
5, 10 0.1~860 100, 250
10 0.01~1k 100, 250
ahs-10 re65g 10 10 0.1, 0.25, 0.5 10~1.2k 25, 50
0.5, 1 1.0-2.7k 50, 100
5, 10 0.1~2.7k 100, 250
10 0.01~5.62k 100, 250
ahs-10n re65n 10 10 1, 5 10~860 25, 50
5 1.0~1.2k 100
5, 10 0.1~1.2k 100, 250
10 0.01~1.5k 100, 250
ahs-25 re70g 25 20 0.1, 0.25, 0.5 10~2.7k 25, 50
0.5, 1 1.0~3.9k 50, 100
5, 10 0.1~3.9k 100, 250
10 0.01~12.1k 100, 250
ahs-25n re70n 25 20 1, 5 10~1.2k 25, 50
5 1.0~2.7k 100
5, 10 0.1~2.7k 100, 250
10 0.01~6.04k 100, 250
ahs-50 re75g 50 30 0.1, 0.25, 0.5 10~3.9k 25, 50
0.5, 1 1.0~5.6k 50, 100
5, 10 0.1~5.6k 100, 250
10 0. 01~39.2k 100, 250
ahs-50n re75n 50 30 1, 5 10~2.7k 25, 50
5 1.0~3.9k 100
5, 10 0.1~3.9k 100, 250
10 0.01~19.6k 100, 250
ahs-100 re77g 100 75 0.1, 0.25, 0.5 10~5.6k 25, 50
0.5, 1 1.0~8.2k 50, 100
5, 10 0.1~12k 100, 250
10 0.01~29.4k 100, 250
ahs-100n re77n 100 75 1,5 10~3.9k 25, 50
5 1.0~5.6k 100
5, 10 0.1~5.6k 100, 250
10 0.01~14.7k 100, 250
ahs-250 re80g 250 120 0.1, 0.25, 0.5 10~12k 25, 50
0.5, 1 1.0~27k 50, 100
5, 10 0.1~27k 100, 250
10 0.01~35.7k 100, 250
ahs-250n re80n 250 120 1, 5 10~5.6k 25, 50
5 1.0~8.2k 100
5, 10 0.1~8.2k 100, 250
10 0.01~17.4k 100, 250
notice: all dimensions might be changed or modified, please refer to last updating specification.
ahc wirewound aluminum housed - electrical specification
type 25°c rated power (w) resistance range (Ω)
resistance tolerance
(± %)
resistance range
(Ω)
temperature coefficient
(±ppm/°c)
ahc-5 5 0.1, 0.25, 0.5 10~1k 25
0.5, 1 1.0~3.32k 25, 50
5, 10 0.1~3.32k 100, 250
10 0.01~3.32k 100, 250
ahc-5n 5 1, 5 10~200 25, 50
5 1.0~860 100
5, 10 0.1~860 100, 250
10 0.01~1k 100, 250
ahc-10 10 0.1, 0.25, 0.5 10~1.2k 25, 50
0.5, 1 1.0-2.7k 50, 100
5, 10 0.1~2.7k 100, 250
10 0.01~5.62k 100, 250
ahc-10n 10 1, 5 10~860 25, 50
5 1.0~1.2k 100
5, 10 0.1~1.2k 100, 250
10 0.01~1.5k 100, 250
ahc-25 25 0.1, 0.25, 0.5 10~2.7k 25, 50
0.5, 1 1.0~3.9k 50, 100
5, 10 0.1~3.9k 100, 250
10 0.01~12.1k 100, 250
ahc-25n 25 1, 5 10~1.2k 25, 50
5 1.0~2.7k 100
5,10 0.1~2.7k 100, 250
10 0.01~6.04k 100, 250
ahc-50 50 0.1, 0.25, 0.5 10~3.9k 25, 50
0.5, 1 1.0~5.6k 50, 100
5, 10 0.1~5.6k 100, 250
10 0. 01~39.2k 100, 250
ahc-50n 50 1, 5 10~2.7k 25, 50
5 1.0~3.9k 100
5, 10 0.1~3.9k 100, 250
10 0.01~19.6k 100, 250
ahc-100 100 0.1, 0.25, 0.5 10~5.6k 25, 50
0.5, 1 1.0~8.2k 50, 100
5, 10 0.1~12k 100, 250
10 0.01~29.4k 100, 250
ahc-100n 100 1, 5 10~3.9k 25, 50
5 1.0~5.6k 100
5, 10 0.1~5.6k 100, 250
10 0.01~14.7k 100, 250
ahc-250 250 0.1, 0.25, 0.5 10~12k 25, 50
0.5, 1 1.0~27k 50, 100
5, 10 0.1~27k 100, 250
10 0.01~35.7k 100, 250
ahc-250n 250 1, 5 10~5.6k 25, 50
5 1.0~8.2k 100
5, 10 0.1~8.2k 100, 250
10 0.01~17.4k 100, 250
notice: all dimensions might be changed or modified, please refer to last updating specification.
surface temperature versus power load (on chassis)
surface temperature versus power load (on chassis)
ah-5w/10w: heatsink required : 0.040 [1.0] alum.plate, 129 in2[832 cm2] or equiv.
ah-25w: heatsink required : 0.040 [1.0] alum.plate, 167 in2[1077 cm2] or equiv.
ah-50w: heatsink required : 0.059 [1.5] alum.plate, 291 in2[1877 cm2] or equiv.
ah-100w: heatsink required : 0.125 [3.2] alum.plate, 294 in2[1896 cm2] or equiv.
ah-250w: heatsink required : 0.125 [3.2] alum.plate, 895 in2[5780 cm2] or equiv.

derating
ah power derating
derating is required to reduce chassis ounting area and for high ambient temperatures.
curves: a=5 & 10 watt unites, unmounted.b=25 watt units, unmounted.c=50,100 & 250 watt units, unmounted.

heat sink derating
heat sink derating
reduced heat sink derating:
derating is also required when recommended heat sink area is reduced.
a = ah-5 and ah-10 size resistor.
b = ah-25 size resistor
c = ah-50, ah-100 and ah-250 size resistor

aluminum housed wirewound - characteristics
parameters test conditions specifications
vibration 10~50~10hz/min -x- y- z axis 2 hours each. Δ r±(0.2%+0.05Ω)max.
load life load rating (chassis mounted)
25°c (1.5 hour on 0.5 hour off) repeat 1000 hours
Δ r±(5%+0.05Ω)max.
terminal strength (1)pull test (30 sec min)
ah-5 1kg, ah-10 2.3kg, ah-25, ah-50 4.5kg
(2)torque test (5~15sec)
ah-100 27kg-cm, ah-250 36kg-cm
Δ r±(0.2%+0.05Ω)max.
dielectric strength ahs-5 ahs-10 ahs-25 1000v
ahs-50 2000v
ahs-100 ahs-250 3000v
Δ r±(0.5%+0.05Ω)max.
ahc-5 ahc-10 ahc-25 1000v
ahc-50 1500v
ahc-100 ahc-250 2500v
insulation resistance under the same test condition of dielectric strength, load dc500v and measure the insulation r. 100mΩ min.
moisture resistance temp 40°c moisture 95% dc 100v 100hr Δ r±(5%+0.05Ω)max.
short time over load 5 × wattage rating-5sec. Δ r±(2%+0.05Ω)max.

how to order
ahs10/10n20Ωd
12345
1 part number
normal typenon-inductive type
ahc-5ahc-5n
ahs-5ahs-5n
ahc-25ahc-25n
ahs-25ahs-25n
ahc-100ahc-100n
ahs-100ahs-100n
2 encapsulant
typeencapsulant
ssilicon
ccement
3 rated wattage
part numberrated wattage
ahc-5
ahc-5n
5w
ahs-5
ahs-5n
5w
ahc-25
ahc-25n
25w
ahs-25
ahs-25n
25w
ahc-100
ahc-100n
100w
ahs-100
ahs-100n
100w
n:non-inductive type.
4 resistance value (Ω)
coderesistance value (Ω)
r470.47Ω
4r74.7Ω
470r470Ω
4k74.7kΩ
47k47kΩ
47k347.3kΩ
470k470kΩ
4m74.7mΩ
5 resistance tolerance
coderesistance tolerance
a5±0.05%
b±0.10%
c±0.25%
d±0.5%
f±1%
j±5%
k±10%
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