AS4PMHM3_A/I

Overview

The AS4PMHM3_A/I is a Vishay General Semiconductor standard recovery rectifier featuring a 1000 V reverse voltage and 4 A average forward current rating. It utilizes the TO-277A (SMPC) surface-mount package. Key electrical parameters include a maximum forward voltage of 920 mV at 4 A, a reverse leakage current of 350 nA at 1000 V, and a typical reverse recovery time of 1.8 µs. The device supports a peak repetitive surge current of 100 A and operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• High-voltage capability with 1000 V reverse blocking voltage for robust power conversion applications.
• Automotive-grade reliability certified under AEC-Q101 standards.
• Extended thermal performance supporting operation up to +175°C junction temperature.
• Compact TO-277A surface-mount packaging designed for automated assembly.

Applications

• Automotive electronics systems requiring high-reliability rectification.
• Industrial power supply circuits operating at elevated voltages.
• General-purpose rectification in high-voltage DC-DC converters.

Procurement Notes

Verify the specific suffix against official datasheets to confirm exact configuration and qualification status. Ensure compatibility with required thermal management solutions given the 175°C rating. Confirm RoHS compliance details match project specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before procurement.

Selection Notes

Select this component when designing circuits requiring 1000 V isolation with moderate current handling in a compact footprint. The TO-277A package offers superior thermal dissipation compared to smaller SMD options. Consider the 1.8 µs reverse recovery time for switching frequency limitations. Verify that the 4 A continuous current rating aligns with the system's thermal design constraints.

Part Context

This part belongs to Vishay's AS4P series of standard recovery rectifiers. The series is engineered for high-voltage applications where reliability is critical. The HM3 designation indicates lead-free construction compliant with RoHS directives. The I suffix typically denotes tape-and-reel packaging for high-volume manufacturing integration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Vishay resources or authorized distributors for verified cross-reference data before substituting.