AU3PM-M3/86A

Overview

The AU3PM-M3/86A is an ultrafast avalanche surface mount rectifier manufactured by Vishay General Semiconductor. It features a maximum repetitive peak reverse voltage of 1000 V and a maximum DC forward current of 3.0 A. The device exhibits a fast reverse recovery time of 75 ns and supports a peak forward surge current of 45 A. It incorporates controlled avalanche characteristics with a non-repetitive avalanche energy rating of 20 mJ at IAS = 2.5 A. The component operates within a junction temperature range of -55 to +175 °C and utilizes the SMPC (TO-277A) package.

Feature Summary

• Ultrafast recovery performance suitable for high-frequency switching applications
• Controlled avalanche capability for robust operation under transient conditions
• Glass passivated pellet chip junction for enhanced reliability
• Low profile design optimized for automated placement processes

Applications

• Fast switching rectification in power supplies
• Freewheeling diodes in inverters and converters
• Lighting circuits
• Consumer, automotive, and telecommunication equipment

Procurement Notes

Verify the specific ordering code against the manufacturer's documentation to ensure correct configuration. Confirm that the M3 suffix aligns with required halogen-free and RoHS compliance standards. Check for AEC-Q101 qualification if automotive grade components are necessary, as this requires a distinct HM3 suffix. Validate package dimensions and thermal resistance parameters against the target PCB layout requirements before finalizing procurement.

Selection Notes

Select the AU3PM variant specifically when a maximum repetitive peak reverse voltage of 1000 V is required, distinguishing it from the 800 V AU3PK version. Ensure the circuit design accommodates the specified 75 ns reverse recovery time and 45 A surge current limits. Evaluate the thermal management strategy based on the provided junction-to-ambient thermal resistance values to maintain safe operating temperatures during continuous operation.

Part Context

This component belongs to the eSMP series of ultrafast avalanche rectifiers designed for surface mount technology. It shares the SMPC (TO-277A) footprint with other Vishay rectifiers but is distinguished by its 1000 V rating and avalanche characteristics. The series targets applications demanding high efficiency and reliability in compact electronic designs.

Replacement Considerations

The AU3PK-M3/86A serves as a direct substitute within the same family, differing only in the maximum repetitive peak reverse voltage rating of 800 V compared to the 1000 V rating of the AU3PM.