- Introduction
- AHS Dim.
- AHC Dim.
- AHS Electrical
- AHC Electrical
- Heat-Sink & Derating
- Test Conditions
- Order Codes
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Aluminum Chassis Heat Sinkable Precision Resistors (AH)
Outstanding Heatsink Aluminum Housed Wirewound Power Precision Resistors (AH).
DeMint Electronics aluminum chassis mount units are designed for maximum heat dissipation mounting solidly to metal chassis surface for maximum heat transfer.
AH series are outstanding for their high power dissipation with precision tolerances in minimum physical sizes.
Lower hot spot ratings due to exclusive complete encapsulation of element within anodized aluminum body.
AH series high-performance welded construction throughout assures long stable load life with threaded heavy stud axial-terminals.
Download complete PDF Aluminum Chassis Heat Sinkable Precision Resistors (AH).
General Specification :
- Operating Temperature Range: -55°C to +275°C.
- Resistance Tolerance: ±10%, ±5%, ±2%, ±1%, ±0.5%, ±0.25%, ±0.1%
- Wattage Range: 11 styles to choose ranging from 5 to 500 watts.
Non-Inductive & Features :
- Ayrton Perry type non-inductive winding is available. When required add "N" to the part number.
- Standard winding & non-inductive winding avaiable. High power rating, strong construction, small size, and ultra precision.
- Aluminum housing allows chassis mounting and provides heat sink capability
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.
- AHS Standard Terminals: 5~150 W Tinned terminals, 200~500 W Threaded terminals.
- AHC Standard Terminals: 5~50 W Tinned terminals, 80~300 W Threaded terminals.
| Heat Sinkable Dimensions (AHS-5, AHS-5N, AHS-10, AHS-10N, AHS-25, AHS-25N, AHS-50, AHS-50N) | ||||||||||||||
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| Type | A | B | C | D | E | F | G | H | J | Φ L | Φ M | Φ N | P | |
| ± 1.0 | ± 1.0 | ± 1.0 | ± 2.0 | ± 1.0 | ± 1.0 | ± 1.0 | ± 0.8 | ± 1.0 | ± 0.8 | ± 0.8 | ± 0.8 | Ref. | ||
| AHS-5 AHS-5N |
11.4 | 12.5 | 15.5 | 31 | 8.5 | 16 | 8 | 1.5 | 4.4 | 2.2 | 1.2 | 1.3 | 8 | |
| AHS-10 AHS-10N |
14 | 16 | 19.5 | 40.5 | 11.2 | 21 | 10 | 2 | 5 | 2.5 | 2 | 2.2 | 10.5 | |
| AHS-25/30 AHS-25/30N |
18.3 | 20 | 27 | 48 | 14.3 | 27 | 13 | 2 | 7 | 3.5 | 2 | 2.2 | 10.5 | |
| AHS-50 AHS-50N |
40 | 22 | 50 | 71 | 16.3 | 29 | 15.5 | 2 | 7.3 | 3.5 | 2 | 2.2 | 10.5 | |
| Heat Sinkable Dimensions (AHS-75, AHS-75N, AHS-100, AHS-100N, AHS-150, AHS-150N) | |||||||||||||
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| Type | A | B | C | D | E | F | G | H | J | Φ L | M | Φ N | |
| ± 1.5 | ± 1.5 | ± 2.0 | ± 2.0 | ± 1.5 | ± 1.5 | ± 1.5 | ± 0.8 | ± 1.5 | ± 1.2 | ± 0.8 | ± 0.8 | ||
| AHS-75 AHS-75N |
23.5 | 37 | 65.5 | 90 | 27 | 48 | 26 | 3.5 | 12 | 4.5 | 3 | 2.7 | |
| AHS-100F AHS-100FN |
35 | 37 | 98 | 119 | 27 | 48 | 26 | 3.5 | 11.5 | 4.5 | 2 | 2.7 | |
| AHS-150 AHS-150N |
52 | 37 | 130 | 151 | 27 | 48 | 26 | 3.5 | 11.5 | 4.5 | 3 | 2.7 | |
| Heat Sinkable Dimensions (AHS-200, AHS-200N, AHS-250F, AHS-250FN, AHS-300, AHS-300N, AHS-500, AHS-500N) | ||||||||||||
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| Type | A | B | C | D | E | F | G | H | J | Φ M | Φ N | |
| ± 2.5 | ± 2.5 | ± 3.5 | ± 2.5 | ± 2.5 | ± 3.5 | ± 2.5 | ± 1.5 | ± 2.0 | ± 1.5 | ± 1.5 | ||
| AHS-200 AHS-200N |
35 | 58 | 92 | 151 | 46.5 | 72 | 45 | 5 | 20 | M5 | 5.5 | |
| AHS-250F AHS-250FN |
45 | 60 | 112 | 165 | 46.5 | 73 | 45 | 5 | 21 | M6 | 5.5 | |
| AHS-300 AHS-300N |
51 | 58 | 130 | 178 | 46.5 | 73 | 45 | 5 | 21 | M6 | 5.5 | |
| AHS-500 AHS-500N |
87 | 58 | 204 | 244 | 46.5 | 73 | 45 | 5 | 21 | M6 | 5.5 | |
| Heat Sinkable Dimensions (AHS-250, AHS-250N) | |
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| Heat Sinkable Dimensions (AHC-5, AHC-5N, AHC-10, AHC-10N, AHC-25, AHC-25N, AHC-50, AHC-50N) | ||||||||||||||
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| Type | A | B | C | D | E | F | G | H | J | Φ L | Φ M | Φ N | P | |
| ± 1.0 | ± 1.0 | ± 1.0 | ± 2.0 | ± 1.0 | ± 1.0 | ± 1.0 | ± 0.8 | ± 1.0 | ± 0.8 | ± 0.8 | ± 0.8 | Ref. | ||
| AHC-5 AHC-5N |
10 | 12.5 | 15 | 25 | 8.5 | 16.5 | 8 | 1.5 | 4 | 2 | 1.2 | 1.3 | 5 | |
| AHC-10 AHC-10N |
14 | 15.5 | 19 | 32 | 10.5 | 20 | 10 | 2 | 5 | 2 | 2 | 2.2 | 6 | |
| AHC-25 AHC-25N |
18 | 19 | 27 | 47 | 15 | 27 | 15.5 | 2 | 7 | 3.2 | 2 | 2.2 | 10 | |
| AHC-50 AHC-50N |
39 | 21 | 50 | 70 | 15 | 29 | 15.5 | 2 | 7 | 3.2 | 2 | 2.2 | 10 | |
| Heat Sinkable Dimensions (AHC-80, AHC-80N, AHC-100S, AHC-100SN) | ||||||||||||
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| Type | A | B | C | D | E | F | G | H | J | Φ L | Φ M | |
| ± 1.5 | ± 1.5 | ± 2.0 | ± 2.0 | ± 1.5 | ± 1.5 | ± 1.5 | ± 0.8 | ± 1.5 | ± 1.2 | ± 1.5 | ||
| AHC-80 AHC-80N |
35 | 37 | 66 | 102 | 28 | 47 | 25 | 3.5 | 12 | 4.5 | M5 | |
| AHC-100S AHC-100SN |
35 | 37 | 66 | 102 | 28 | 47 | 25 | 3.5 | 12 | 4.5 | M5 | |
| Heat Sinkable Dimensions (AHC-100, AHC-100N) | ||||||||||||
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| Heat Sinkable Dimensions (AHC-250, AHC-250N, AHC-300, AHC-300N) | |
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| Standard Electrical Specification (AHS) | |||||||||||
| Type | MIL Style | Wattage Rating (W) |
Resistance Range (Ω) | Resistance Tolerance (%) |
Max. Working (V) |
Max. Weight (g)t |
Proper heat sink (Aluminum chassis) |
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| AHS Inductive |
AHSN Non-inductive |
AHS | AHSN | AHS | AHSN | Area (cm2) | Thickness (mm) | ||||
| AHS-5 | RE60 | 5 | 0.01R~3K | 0.01R~750R |
B (±0.1%) C (±0.25%) D (±0.5%) F (±1%) G (±2%) J (±5%) K (±10%) |
F (±1%) G (±2%) J (±5%) K (±10%) |
√ ( P * R ) | 3 | 415 | 1 | |
| AHS-10 | RE65 | 10 | 0.01R~5K | 0.01R~1K25 | 6 | 415 | |||||
| AHS-25 | RE70 | 25 | 0.01R~10K | 0.01R~2K | 11 | 535 | |||||
| AHS-30 | 30 | 0.01R~10K | 0.01R~2K | 18 | 535 | ||||||
| AHS-50 | RE75 | 50 | 0.01R~10K | 0.01R~2K | 30 | 995 | |||||
| AHS-75 | 75 | 0.01R~20K | 0.5R~5K | 90 | 995 | 3 | |||||
| AHS-100 | RE77 | 100 | 1R~30K | 1R~7K | 265 | 2780 | |||||
| AHS-150 | 150 | 1R~40K | 1R~10K | 265 | 995 | ||||||
| AHS-200 | 200 | 1R~50K | 1R~12K | 420 | 3750 | ||||||
| AHS-250 | RE80 | 250 | 1R~50K | 1R~12K | 510 | 4900 | |||||
| AHS-250F | RE80 | 250 | 1R~50K | 1R~12K | 480 | 4765 | |||||
| AHS-300 | 300 | 1R~50K | 1R~12K | 580 | 5780 | ||||||
| AHS-500 | 500 | 1R~50K | 1R~12K | 970 | 8500 | ||||||
| Standard Electrical Specification (AHC) | |||||||||||
| Type | MIL Style | Wattage Rating (W) |
Resistance Range (Ω) | Resistance Tolerance (%) |
Max. Working (V) |
Max. Weight (g)t |
Proper heat sink (Aluminum chassis) |
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| AHC Inductive |
AHCN Non-inductive |
AHC | AHCN | AHC | AHCN | Area (cm2) | Thickness (mm) | ||||
| AHC-5 | RE60 | 5 | 0.1R~3K | 0.1R~750R |
B (±0.1%) C (±0.25%) D (±0.5%) F (±1%) G (±2%) J (±5%) K (±10%) |
F (±1%) G (±2%) J (±5%) K (±10%) |
√ ( P * R ) | 6 | 415 | 1 | |
| AHC-10 | RE65 | 10 | 0.1R~5K | 0.1R~1K25 | 11 | 415 | |||||
| AHC-25 | RE70 | 25 | 0.1R~10K | 0.1R~2K | 20 | 535 | |||||
| AHC-50 | RE75 | 50 | 0.1R~10K | 0.1R~2K | 30 | 995 | |||||
| AHC-80 | 75 | 0.1R~20K | 0.5R~5K | 90 | 995 | ||||||
| AHC-100S | 100 | 1R~30K | 1R~7K | 160 | 2780 | 3 | |||||
| AHC-100 | RE77 | 100 | 1R~3K | 1R~3K | 100 | 995 | |||||
| AHC-250 | RE80 | 250 | 1R~3K | 1R~3K | 480 | 4900 | |||||
| AHC-300 | 300 | 1R~3K | 1R~3K | 580 | 5780 | ||||||
| Surface Temperature Versus Power Load (Mounted on heat-sink chassis) (AH) | |
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| Ambient Temperature Derating (AH) | ||
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| Reduced Heat Sink Derating (AH) | ||
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| Test Conditions (AH) | ||
| Parameters | Test Conditions | Specifications |
| T.C.R. | Room temperature /100°C up. | ±25, 50, 100, 250ppm/°C |
| Short Time Over Load | 5 × wattage rating-5sec. | Δ R±(2%+0.05Ω)Max. |
| 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) (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-30, AHS-50, AHS-75, AHS-100 2000V AHS-150, AHS-200, AHS-250, AHS-300, AHS-500 2500V |
Δ R±(0.5%+0.05Ω)Max. |
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AHC-5 AHC-10 AHC-25 800V AHC-50, AHC-80, AHC-100 1000V AHC-250, AHC-300 2500V |
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| Insulation Resistance | Under the same test condition of Dielectric Strength, Load DC500V and measure the Insulation R. | AHS: 1000 MΩ Min. AHC: 100 MΩ Min. |
| Moisture Resistance | Temp 40°C moisture 95% DC 100V 100 Hrs. | Δ R±(5%+0.05Ω)Max. |
| Moisture Load Life | Temp 40°C moisture 90% 1/10 X wattage rating (1.5 Hrs on-0.5hrs off)-Repeat 200 Hrs. | Δ R±(5%+0.05Ω)Max. |
| Resistance to Soldering Heat | 350°C ± 10°C for 3±0.5 Seconds | Δ R±(1%+0.05Ω)Max. |
| Order Codes (AH) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| AH | S | 10/10N | 20Ω | D | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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