AS3PKHM3_A/H

Overview

The AS3PKHM3_A/H is a single fast recovery rectifier from Vishay Semiconductors, designed for surface-mount applications in the TO-277A-3 package. It features an 800 V repetitive peak reverse voltage and a 3 A average forward current rating. The device exhibits a maximum forward voltage of 900 mV at rated current and a typical reverse leakage current of 280 nA. With a recovery time of 1.2 µs and a surge current capability of 70 A, it operates within a junction temperature range of -55 °C to +175 °C. This component holds AEC-Q101 qualification.

Feature Summary

• Fast recovery characteristics with avalanche capability for robust performance
• High thermal stability supporting operation up to 175 °C junction temperature
• Automotive-grade reliability through AEC-Q101 qualification
• Surface-mount construction in a compact TO-277A-3 package

Applications

• Automotive power supply circuits requiring high-voltage rectification
• Industrial DC-DC converter output stages
• High-frequency switching power supplies
• General-purpose rectification in harsh environments

Procurement Notes

Verify the specific suffix _A/H against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure the procurement order aligns with the required automotive qualification standards if intended for AEC-Q101 applications. Cross-reference the part number with the latest Vishay documentation to validate any recent design changes or obsolescence notices before finalizing purchase orders.

Selection Notes

Select this component when a single-phase fast recovery rectifier with high voltage blocking capability is required in a surface-mount format. The 800 V rating suits applications involving higher bus voltages, while the 3 A current capacity supports moderate power levels. Consider the 1.2 µs recovery time for efficiency in high-frequency switching topologies where standard recovery diodes may cause excessive losses.

Part Context

This rectifier belongs to the AS3P series, which utilizes Vishay's eSMP packaging technology. The series is engineered to provide improved thermal performance and mechanical stability compared to traditional packages. The AS3PKHM3_A/H specifically targets markets demanding reliable, high-voltage rectification solutions that meet stringent automotive quality standards.

Replacement Considerations

Consult Vishay's official substitution guide for verified alternatives. Direct replacements must match the 800 V rating, 3 A current, TO-277A-3 package, and fast recovery characteristics. Verify that any substitute also meets AEC-Q101 requirements if automotive qualification is necessary.