PRECISION POWER RESISTORS

Aluminum Housed Precision Power Resistors

AH

Known for providing design engineers with a high power and ultra precision resistors


Tokenchina has further expanded its power wirewound product capabilities to aluminum housed chassis mount AH series.


The AH series use high grade fine ceramic cores for uniform heat distribution. Molded in a special high temperature material and mounted in an extruded aluminum finned heat sink housing, these designs provide maximum power dissipation and reliability at conventional power ratings. They have tinned copperweld leads for solderability, and meet MIL-R-18546 and MIL-R-39009.


Token China's precision AH wirewound heat sinkable resistors supporting a flexible range of applications are ideally suited for heat dissipation, tight tolerance, high power required, and easy to utilize and install.


Non-Inductive: Power Aluminum Housed Wirewound Resistors - AH Series

  • Ayrton Perry type non-inductive winding is available. When required add "N" to the part number.

Resistance Tolerance:

  • K(±10%), J(±5%), F(±1%), D(±0.5%), C(±0.25%), B(±0.10%), A5(±0.05%)

Wattage Rating:

  • 5W ~ 250W, can be found from Volts2 / Ohms

Materials

  • Encapsulant: Silicone
  • 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.

The power AH series is lead-free and RoHS compliant. Please contact us for details with your specific needs.

AH 5W~50W Dimensions (Unit: mm) - Sinkable Resistors

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
  • 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
  • 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
  • All values might be changed or modified, please consult factory for details.

Electrical Specification - Aluminum Housed AH

Type MIL 25°C Rated Power (W) Resistance Range (Ω)
Type Industry Military ± 0.05%, ±0.1% ±0.25% ±0.5% ±1%,±5%,±10%
AH-5 RE60G 5 5 1.0~510Ω 0.5~1.5K 0.1~1.2K 0.10~3.32K
AH-5N RE60N 5 5 1.0~100Ω 1.0~200Ω 1.0~860Ω 1.0~1.65K
AH-10 RE65G 10 10 1.0~1.2K 0.5-2.7K 0.1~2.7K 0.10~5.62K
AH-10N RE65N 10 10 1.0~860Ω 1.0~1.2K 1.0~1.2K 1.0~2.8K
AH-25 RE70G 25 20 0.5~2.7K 0.1~3.9K 0.1~3.9K 0.10~12.1K
AH-25N RE70N 25 20 1.0~1.2K 1.0~2.7K 1.0~2.7K 1.0~6.04K
AH-50 RE75G 50 30 0.5~3.9K 0.1~5.6K 0.1~5.6K 0.10~39.2K
AH-50N RE75N 50 30 1.0~2.7K 1.0~3.9K 1.0~3.9K 1.0~19.6K
AH-100 RE77G 100 75 1.0~5.6K 0.1~8.2K 0.05~12K 0.05~29.4K
AH-100N RE77N 100 75 1.0~3.9K 1.0~5.6K 1.0~5.6K 1.0~14.7K
AH-250 RE80G 250 120 0.1~12K 0.1~27K 0.1~27K 0.1~35.7K
AH-250N RE80N 250 120 1.0~5.6K 1.0~8.2K 1.0~8.2K 1.0~17.4K
  • All dimensions might be changed or modified, please refer to last updating specification.
Surface Temperature Versus Power Load (on Chassis) Derating
Surface Temperature Versus Power Load (on Chassis) 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.

Characteristics - Aluminum Housed AH

Parameters Test Conditions Specifications
Vibration 10c/s~50c/s~10c/s(1Min)-2Hours each of paralleled and right angle Δ R±(0.2%+0.05Ω)Max.
Load Life Load Rating (chassis mounted)
(1.5Hour on 0.5Hour OFF) Repeat 1000Hours		 Δ R±(1.5%+0.05Ω)Max.
Heat Resistance 275°C 2Hours Δ R±(0.5%+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 AH-5 AH-10 AH-25 1000V
AH-50 1500V
AH-100 AH-250 2500V		 Δ R±(0.5%+0.05Ω)Max.
Insulation Resistance Under the same test condition of Dielectric Strength, Load DC500V and measure the Insulation R. 1000MΩMin.
Moistrue Resistance temp 40°C moisture 95% DC 100V 500Hr Δ R±(0.5%+0.05Ω)Max.
Moisture Load Life temp 40°C moisture 95% 1/10 × wattage rating
(1.5Hr on-0.5Hr OFF)- Repeat 1000Hr		 Δ R±(0.5%+0.05Ω)Max.
Short Time Over Load 5 × wattage rating-5sec. Δ R±(0.5%+0.05Ω)Max.

How to Order - Aluminum Housed AH

AH-50 / AH-50N 50W 20R D
Product Type
AH - 5
AH - 5N
AH - 10
AH - 10N
AH - 25
AH - 25N
AH - 50
AH - 50N
AH - 100
AH - 100N
AH - 250
AH - 250N
Rated Wattage
5W
5W
10W
10W
25W
25W
50W
50W
100W
100W
250W
250W
Resistance Value (Ω)
R47 0.47 Ω
4R7 4.7 Ω
470R 470 Ω
4K7 4.7K Ω
47K 47K Ω
47K3 47.3K Ω
470K 470K Ω
4M7 4.7M Ω
Resistance Tolerance
K ±10%
J ±5%
F ±1%
D ±0.5%
C ±0.25%
B ±0.10%
A5 ±0.05%

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AH Series - Aluminum Housed Precision Power Resistors