AR4PMHM3_A/I

Overview

The AR4PMHM3_A/I is a fast switching avalanche surface-mount rectifier from Vishay General Semiconductor. It features a single diode configuration in an SMPC (TO-277A) package. The device supports a maximum repetitive peak reverse voltage of 1000 V and a maximum DC forward current of 4.0 A. Peak forward surge current capability reaches 65 A, with non-repetitive avalanche energy rated at 20 mJ. Electrical characteristics include a typical instantaneous forward voltage of 1.27 V at 4.0 A and a maximum reverse recovery time of 120 ns. Operating junction and storage temperature range spans from -55 °C to +175 °C.

Feature Summary

• Glass passivated pellet chip junction for enhanced reliability
• Controlled avalanche characteristics for robust performance under transient conditions
• Low leakage current and high forward surge capability
• Meets MSL level 1 per J-STD-020 with LF maximum peak of 260 °C

Applications

• Lighting applications
• Fast switching rectification of power supplies
• Inverters and converters
• Freewheeling diodes for consumer, automotive, and telecommunication equipment

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package quantity and delivery mode. The base part number HM3 indicates AEC-Q101 qualification. Confirm compliance with halogen-free and RoHS requirements as specified for the commercial grade variant. Ensure the requested revision code matches the required manufacturing batch specifications.

Selection Notes

Select this component for circuits requiring high voltage blocking capabilities up to 1000 V in a compact surface-mount form factor. The controlled avalanche rating makes it suitable for inductive load switching where energy absorption is necessary. Verify thermal management requirements against the junction-to-ambient thermal resistance values provided in the datasheet for your specific PCB layout.

Part Context

This device belongs to the eSMP series of fast switching avalanche rectifiers manufactured by Vishay General Semiconductor. It utilizes the SMPC (TO-277A) package, which offers a low profile ideal for automated placement. The product line is designed to meet automotive quality standards through AEC-Q101 qualification, ensuring suitability for demanding electronic environments.

Replacement Considerations

Consult official Vishay documentation for confirmed substitute part numbers. Cross-reference electrical parameters such as reverse voltage, forward current, and recovery time when evaluating alternatives.