AS3PMHM3_A/H

Overview

The AS3PMHM3_A/H is a single-configuration fast recovery rectifier manufactured by Vishay Semiconductors. It features a 1 kV repetitive peak reverse voltage and a 3 A average forward current rating. The device utilizes an eSMP package (TO-277A-3) for surface mount installation. Key electrical parameters include a maximum forward voltage of 900 mV, a reverse leakage current of 280 nA, and a typical recovery time of 1.2 µs. It supports a maximum surge current of 70 A and operates within a junction temperature range of -55 °C to +175 °C. The component holds AEC-Q101 qualification.

Feature Summary

• Fast recovery performance with a typical 1.2 µs reverse recovery time suitable for high-frequency switching applications.
• High thermal stability allowing operation at junction temperatures up to +175 °C.
• AEC-Q101 qualified for automotive electronics reliability standards.
• eSMP package design providing robust mechanical strength and efficient heat dissipation.

Applications

• Automotive power supply circuits requiring high-reliability rectification.
• DC-DC converter output stages in industrial equipment.
• High-voltage freewheeling diode applications in motor drives.
• General-purpose rectification in high-temperature environments.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the AEC-Q101 qualification status meets your project's automotive reliability requirements. Check for any recent Product Change Notifications (PCNs) regarding material or assembly site updates before finalizing procurement orders.

Selection Notes

Select this component when a single-diode configuration with 1 kV blocking capability and 3 A continuous current is required in a compact surface-mount form factor. The fast recovery characteristic makes it appropriate for applications where low switching losses are critical. Ensure the PCB layout accommodates the TO-277A-3 footprint and provides adequate thermal relief for the specified operating temperature range.

Part Context

This part belongs to Vishay's eSMP series of standard and fast recovery rectifiers. The eSMP package is designed to offer improved thermal performance and mechanical durability compared to traditional leaded packages. It serves as a surface-mount alternative for applications previously using larger through-hole rectifiers, enabling higher density circuit board designs.

Replacement Considerations

Direct replacements must match the 1 kV Vr, 3 A If, and TO-277A-3 package dimensions. Verify that substitute components also meet AEC-Q101 standards if automotive use is intended. Compare forward voltage and recovery time specifications to ensure equivalent circuit performance.