PRODUCTS
 
ALUMINUM HOUSED WIREWOUND RESISTORS (AH)
 
Features
 

  • High power rating, small size and ultra precision.

  • Standard winding & non-inductive winding types.

  • High stability, strong construction.

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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
  • Dielectric Strength:
    AH-5 AH-10 AH-25 1000V AH-50
 
Standard Electrical Specification
 
Type MIL 25°C Rated Power (W) Resistance Range (£[)
Type Industry Military ± 0.05%, ±0.1% ±0.25% ±0.5% ±1%,±5%,±10%
AH-5 RE60G 5 5 1.0~510£[ 0.5~1.5K 0.1~1.2K 0.10~3.32K
AH-5N RE60N 5 5 1.0~100£[ 1.0~200£[ 1.0~860£[ 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 1.0~860£[ 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 50 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

Notice: All dimensions might be changed or modified, please refer to last updating specification.
 
Characteristic Performance
 
Parameters Test Conditions Specifications
Short Time Over Load 5X wattage rating-5sec. £G R±(0.5%+0.05£[)Max.
Moistrue Resistance temp 40°C moisture 95% DC 100V 500Hr £G R±(0.5%+0.05£[)Max.
Moisture Load Life temp 40°C moisture 95% 1/10 X wattage rating
(1.5Hr on-0.5Hr OFF)- Repeat 1000Hr		 £G R±(0.5%+0.05£[)Max.
Load Life Load Rating (chassis mounted)
(1.5Hour on 0.5Hour OFF) Repeat 1000Hours		 £G R±(1.5%+0.05£[)Max.
Vibration 10c/s~50c/s~10c/s(1Min)-2Hours each of paralleled and right angle £G R±(0.2%+0.05£[)Max.
Heat Resistance

275°C 2Hours

 £G R±(0.5%+0.05£[)Max.
Dielectric Strength AH-5 AH-10 AH-25 1000V
AH-50 1500V
AH-100 AH-250 2500V		 £G R±(0.5%+0.05£[)Max.
Insulation Resistance

Under the same test condition of Dielectric Strength, Load DC500V and measure the Insulation R.

 1000M£[Min.
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

 £G R±(0.2%+0.05£[)Max.
 
Temperature Versus Power Load (on Chassis)
 

 

 
 
Derating Curve Surface
 

Derating is required to reduce chassis mounting 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.
 
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.
 
Dimensions (AH-5, 10, 25, 50, AH-5N 10N, 25N, 50N)
 

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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-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-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-50 40 21.4 50 70.6 16 29 15.5 2.2 6.6 5 3.2 2 2.2 10.3

Notice: All dimensions might be changed or modified, please refer to last updating specification.
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Dimensions (AH - 100, AH - 100N)
 
 
Dimensions (AH - 250, AH - 250N)

 
 
How to Order
 
AH50 / AHN 50W 20£[ D
Product Type Rated Wattage Resistance Value (£[) Resistance Tolerance
 

 


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