AS1PMHM3/85A

Overview

The AS1PMHM3/85A is a surface-mount avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum repetitive peak reverse voltage of 1000 V and an average forward rectified current of 1.5 A. The device utilizes the DO-220AA (SMP) package and belongs to the eSMP® series. It is designed for high-reliability applications, meeting AEC-Q101 automotive qualification standards.

Feature Summary

• Engineered with avalanche characteristics to withstand unclamped inductive switching events
• Automotive-grade reliability certified under AEC-Q101 standards
• Optimized for surface-mount assembly in compact electronic designs

Applications

• Automotive electronics systems requiring robust surge protection
• High-voltage rectification circuits in industrial equipment
• Power supply units utilizing avalanche-rated components

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with existing board layouts regarding the DO-220AA footprint. Confirm that the intended application environment aligns with the component's specified operating temperature range and thermal dissipation requirements before finalizing procurement.

Selection Notes

Select this component when circuit design demands high-voltage blocking capability combined with avalanche energy handling. The 1.5 A current rating suits moderate power applications where space constraints favor the SMP package. Consider the AEC-Q101 certification if the deployment involves automotive or stringent industrial environments requiring enhanced durability.

Part Context

This part belongs to Vishay's eSMP® series of surface-mount rectifiers. It shares the DO-220AA physical form factor with other devices in the lineup but distinguishes itself through avalanche-rated performance and higher current capacity compared to standard 1 A variants. The series targets modern electronics needing reliable high-voltage solutions in compact packages.

Replacement Considerations

Direct substitutes include AS1PK-M3/85A and S1PKHM3/85A. Verify pinout compatibility and ensure the alternative meets the 1000 V reverse voltage and 1.5 A current specifications. Confirm that any replacement also satisfies AEC-Q101 requirements if automotive qualification is mandatory.