AU1PMHM3/85A

Overview

The AU1PMHM3/85A is a surface-mount avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum DC reverse voltage (Vr) of 1000 V and an average rectified forward current (Io) of 1 A. The device utilizes the DO-220AA (SMP) package and belongs to the eSMP® series. Key electrical specifications include a reverse leakage current of 1 µA at 1000 V, a reverse recovery time (trr) of 120 ns, and a forward voltage drop (Vf) of 1.6 V. The component is RoHS compliant and operates within a standard temperature range.

Feature Summary

• Engineered with avalanche ruggedness for enhanced reliability under transient conditions
• Utilizes low-inductance DO-220AA surface-mount packaging for efficient circuit integration
• Features fast reverse recovery characteristics suitable for high-frequency switching applications

Applications

• High-voltage power supply circuits requiring avalanche capability
• Switching mode power supplies (SMPS)
• General-purpose rectification in industrial electronics

Procurement Notes

Verify the specific suffix /85A corresponds to the Tape & Reel packaging configuration when ordering. Confirm that the required voltage rating of 1000 V aligns with the system design constraints. Ensure compatibility with the DO-220AA footprint on the printed circuit board. Check for RoHS compliance requirements if operating in regulated environments. Validate thermal management needs based on the 1 A average current rating.

Selection Notes

Select this component when a 1000 V blocking voltage and 1 A continuous current are required in a compact surface-mount form factor. The avalanche rating distinguishes it from standard rectifiers, offering tolerance to energy surges. Compare the 120 ns reverse recovery time against other Vishay series like S1P or S1K for speed requirements. Consider the DO-220AA dimensions for space-constrained designs.

Part Context

This part belongs to Vishay's eSMP® series of surface-mount rectifiers. It shares the DO-220AA package family with other Vishay components such as the S1PKHM3/85A and S1PM-M3/85A. Unlike the SS2P2LHM3/85A Schottky diode, this device offers higher voltage blocking capabilities but exhibits higher forward voltage drop due to its avalanche technology.

Replacement Considerations

Public confirmed substitute part numbers: AU1PKHM3/85A (800V variant). Verify voltage derating if substituting with lower voltage ratings.