AHM-20

Overview

The Ohmite AHM-20 is a vitreous enamel conformal axial terminal resistor designed for high-reliability applications. It belongs to the 20 Series, offering power ratings from 1 watt up to 10 watts across six different sizes. These resistors are characterized by their durability and economical construction, providing electrical attributes comparable to higher-cost series while maintaining robust performance in demanding circuit environments.

Feature Summary

• Vitreous enamel conformal coating for environmental protection
• Axial terminal configuration for through-hole mounting
• Durable construction suitable for high-energy applications

Applications

• Computer equipment circuits
• High-reliability industrial electronics
• Power supply filtering

Procurement Notes

Verify the specific resistance value and tolerance against the required design specifications, as the AHM-20 designation refers to the series rather than a single fixed component. Confirm the exact wattage rating (1W to 10W) and physical size code required for the application. Ensure that the vitreous enamel coating meets the thermal and chemical environment requirements of the target assembly.

Selection Notes

Select this component when durable, economical axial resistors are needed for computer or general industrial applications. The choice depends on matching the specific power dissipation needs within the 1W to 10W range. Consider the physical space constraints due to the six available sizes in the series. This series is appropriate where standard electrical attributes are sufficient without requiring premium-grade specifications.

Part Context

The AHM-20 is part of Ohmite's extensive 20 Series lineup, which includes various axial terminal resistors. This series is positioned as a cost-effective alternative to more expensive options like the 90 Series while delivering similar electrical performance. The product line reflects Ohmite's long-standing expertise in manufacturing reliable resistive components for diverse electronic industries.

Replacement Considerations

Direct substitutes must match the axial form factor, vitreous enamel coating, and equivalent power rating within the 1W to 10W range. Verify that any replacement maintains the same tolerance and insulation resistance characteristics. Cross-reference with other manufacturers' axial wirewound or thick film resistors if specific Ohmite part numbers are unavailable.