AS4PJHM3_A/I

Overview

The AS4PJHM3_A/I is a high current density standard avalanche surface-mount rectifier manufactured by Vishay General Semiconductor. It features a single circuit configuration in an SMPC (TO-277A) package with glass passivated pellet chip junctions. The device supports a maximum repetitive peak reverse voltage of 600 V and a DC forward current of 4.0 A. It withstands a peak forward surge current of 100 A and offers a non-repetitive avalanche energy rating of 20 mJ at TJ = 25 °C. The typical instantaneous forward voltage is 0.92 V at IF = 4 A, with a maximum operating junction temperature of 175 °C.

Feature Summary

• Controlled avalanche characteristics for robust operation under transient conditions
• Glass passivated pellet chip junction ensuring low leakage current
• Very low profile design suitable for automated placement processes
• Meets MSL level 1 per J-STD-020 with LF maximum peak of 260 °C

Applications

• General purpose rectification of power supplies
• Inverters and converters
• Freewheeling diodes for consumer, automotive, and telecommunication equipment

Procurement Notes

Verify the specific ordering code suffix to confirm packaging details and revision status. Confirm that the HM3 designation aligns with halogen-free and RoHS-compliant requirements. Ensure the AEC-Q101 qualification matches the intended application environment. Cross-reference the base part number with the latest datasheet revision to validate electrical parameters before procurement.

Selection Notes

Select this component when a 600 V blocking capability and 4 A continuous current are required in a compact surface-mount form factor. Consider the controlled avalanche feature if the circuit is susceptible to inductive switching transients. Evaluate the thermal resistance values against the expected ambient temperature and PCB copper pad area to ensure reliable operation within the 175 °C junction limit.

Part Context

This component belongs to the eSMP series of high current density standard avalanche rectifiers from Vishay. The series includes variants with different voltage ratings such as AS4PD, AS4PG, AS4PK, and AS4PM. All share the same SMPC package and general structural characteristics but differ in their maximum repetitive peak reverse voltage specifications.

Replacement Considerations

AS4PJHM3_A/H serves as a verified alternative with identical electrical specifications but differs in the delivery mode packaging.