AU1PJHM3/85A

Overview

The AU1PJHM3/85A is a surface mount ultrafast avalanche rectifier from Vishay General Semiconductor, part of the eSMP® series. It features a glass passivated pellet chip junction and operates in a DO-220AA (SMP) package with a typical height of 1.0 mm. The device supports an average forward current of 1.0 A and a maximum repetitive peak reverse voltage of 800 V. Key electrical parameters include a reverse recovery time of 75 ns, a non-repetitive avalanche energy rating of 20 mJ at IAS = 1.0 A, and a maximum instantaneous forward voltage of 1.85 V at 1.0 A. It is qualified to AEC-Q101 standards for automotive applications.

Feature Summary

• Ultrafast recovery characteristics designed for high-frequency switching operations
• Integrated avalanche capability allowing operation under specific transient energy conditions
• Glass passivated junction construction providing robust protection against mechanical stress
• Automotive grade qualification ensuring reliability in demanding thermal environments

Applications

• Secondary rectification in AC/AC converters
• Freewheeling circuits in DC/DC converters
• High temperature consumer electronics power supplies
• Automotive electronic unit protection

Procurement Notes

Verify that the component matches the specific AU1PJ variant corresponding to the 800 V rating within the AU1PM family. Confirm the HM3 suffix indicates automotive grade compliance and halogen-free status. Ensure the ordering code includes the /85A designation if a 10,000-unit reel quantity is required. Validate that the application environment remains within the specified -55 °C to +175 °C operating junction temperature range.

Selection Notes

Select this component when designing circuits requiring high-voltage blocking capabilities combined with fast switching speeds. The 800 V rating distinguishes it from lower voltage variants like the AU1PD or AU1PG. Consider the 20 mJ avalanche energy limit when evaluating potential overvoltage transients. The SMP package offers a low profile suitable for space-constrained automated placement processes.

Part Context

This device belongs to the AU1P series of surface mount ultrafast avalanche rectifiers manufactured by Vishay General Semiconductor. The series encompasses multiple voltage ratings ranging from 200 V to 1000 V, sharing common physical dimensions and thermal characteristics. The AU1PJ specifically denotes the 800 V version within this lineup, utilizing the eSMP® technology for enhanced performance in compact form factors.

Replacement Considerations

Direct substitutes within the same voltage class include the AU1PKHM3/85A (800 V) and AU1PMHM3/85A (1000 V), provided the circuit design accommodates their respective surge current limits of 25 A. Lower voltage alternatives such as the AU1PGHM3/85A (400 V) may be used if system requirements allow reduced blocking voltage.