AS4PKHM3_A/I

Overview

The AS4PKHM3_A/I is a single standard recovery rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an 800 V maximum repetitive reverse voltage and supports a continuous forward current of 4 A. The device utilizes the TO-277A-3 (SMPC) surface-mount package, which integrates avalanche ruggedness for enhanced reliability. Key electrical characteristics include a typical forward voltage of 920 mV at 4 A, a maximum surge current rating of 100 A, and a reverse leakage current of 350 nA at rated voltage. It is qualified to AEC-Q101 standards for automotive applications and operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• Avalanche ruggedness capability for robust performance in demanding power conversion environments
• Automotive grade qualification compliant with AEC-Q101 standards
• Surface-mount SMPC package design for high current density and thermal efficiency

Applications

• Automotive power supply circuits requiring high voltage blocking
• General purpose rectification in industrial power electronics
• High-reliability DC-DC converter output stages

Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or tape-and-reel specifications that do not alter the core electrical function. Confirm the manufacturer part number matches the required automotive qualification and package type before procurement. Ensure compatibility with automated assembly processes given the surface-mount form factor.

Selection Notes

Select this component for designs requiring high-voltage isolation combined with avalanche energy handling capabilities. The SMPC package offers a compact footprint suitable for space-constrained PCB layouts while maintaining high thermal dissipation. Consider the 175°C junction temperature rating for operation in elevated ambient temperature environments common in automotive under-hood applications.

Part Context

This device belongs to Vishay's eSMP® series of high-current density rectifiers. The series emphasizes smaller, lighter, and stronger solutions compared to traditional through-hole alternatives. The AS4P family specifically targets applications needing reliable standard recovery characteristics with added ruggedness features for harsh operating conditions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.