AS4PJHM3/87A

Overview

The AS4PJHM3/87A is a high current density standard avalanche surface-mount rectifier manufactured by Vishay General Semiconductor. It features a single diode configuration in an SMPC (TO-277A) package. Key electrical parameters include a maximum repetitive peak reverse voltage of 600 V, a maximum DC forward current of 4.0 A, and a peak forward surge current of 100 A. The device exhibits a typical instantaneous forward voltage of 0.92 V at 4 A and a typical reverse recovery time of 1.8 μs. It supports an operating junction temperature range from -55 °C to +175 °C.

Feature Summary

• Glass passivated pellet chip junction for enhanced reliability
• Controlled avalanche characteristics with rated avalanche energy capability
• Low leakage current performance across operating temperatures
• High forward surge current capability for robust operation

Applications

• General purpose rectification in power supplies
• Freewheeling diodes for consumer electronics
• Inverter and converter circuits
• Automotive electronic systems
• Telecommunication equipment

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm packaging quantity and revision status. Ensure the HM3 designation aligns with required halogen-free and RoHS compliance standards. Confirm AEC-Q101 qualification requirements if the application targets automotive sectors. Cross-reference the base part number with the latest datasheet revision to validate thermal and electrical ratings before procurement.

Selection Notes

Select this component for applications requiring high current density in a low-profile surface-mount form factor. The controlled avalanche rating makes it suitable for inductive load switching where transient energy absorption is necessary. Evaluate the thermal resistance characteristics relative to the PCB copper pad area to ensure adequate heat dissipation within the specified junction temperature limits.

Part Context

This component belongs to the eSMP series of high current density standard avalanche surface-mount rectifiers. The series includes variants with different reverse voltage ratings, such as AS4PD, AS4PG, AS4PK, and AS4PM. The AS4PJ variant specifically provides a 600 V blocking capability. All variants share the same SMPC package and general structural characteristics defined in the product family datasheet.

Replacement Considerations

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