AR1FKHM3/I

Overview

The AR1FKHM3/I is a fast recovery avalanche rectifier from Vishay, rated at 800 V reverse voltage and 1 A average forward current. It utilizes the SMF (DO-219AB) surface-mount package. Key electrical parameters include a maximum reverse leakage current of 1 µA at 800 V, a forward voltage of 1.6 V at 1 A, and a reverse recovery time of 140 ns. The device operates within a junction temperature range of -55°C to 175°C and holds AEC-Q101 automotive qualification.

Feature Summary

• Avalanche-rated technology for robust operation in inductive switching environments
• Fast recovery characteristics suitable for high-frequency applications
• Automotive-grade reliability with AEC-Q101 certification

Applications

• Automotive power supply circuits
• Inductive load protection
• High-frequency rectification

Procurement Notes

Verify the specific suffix 'I' against official datasheets to confirm packaging or marking variations. Ensure compatibility with RoHS3 standards. Confirm AEC-Q101 status for automotive integration. Check for recent PCN updates regarding assembly sites or material changes before finalizing procurement.

Selection Notes

Select this component for designs requiring 800 V blocking capability in a compact SMF footprint. The avalanche rating provides tolerance for voltage transients common in automotive systems. Compare recovery times and thermal resistance against alternatives if higher speed or lower loss is required.

Part Context

This part belongs to Vishay's AR1F series of surface-mount fast recovery diodes. The series offers various voltage ratings including 400 V, 600 V, 800 V, and 1000 V options. All variants share the DO-219AB package and are designed for automotive and industrial applications requiring reliable rectification.

Replacement Considerations

Official substitutes within the same family include AR1FGHM3/H (400V), AR1FMHM3/H (1000V), and AR1FKHM3/H. Verify pinout and thermal characteristics when cross-referencing with other manufacturers' 800V SMF diodes.