AR1FM-M3/H

Overview

The AR1FM-M3/H is a single ultrafast recovery rectifier manufactured by Vishay General Semiconductor. It features a maximum repetitive peak reverse voltage of 1000 V and an average forward rectified current of 1 A. The device utilizes avalanche technology and is housed in the DO-219AB (SMF) surface-mount package. Key electrical parameters include a maximum forward voltage of 1.6 V at 1 A, a reverse leakage current of 1 µA at 1000 V, and a typical reverse recovery time of 120 ns. It operates within a junction temperature range of -55°C to +175°C and holds AEC-Q101 automotive qualification.

Feature Summary

• Ultrafast recovery performance with low reverse recovery charge for efficient switching applications
• Avalanche-rated capability allowing operation in inductive switching environments without failure
• Automotive grade reliability certified under AEC-Q101 standards for harsh environment durability

Applications

• High-frequency DC/DC converter circuits
• Freewheeling diodes in motor drive systems
• Power factor correction stages in industrial power supplies

Procurement Notes

Verify the specific suffix M3/H against the manufacturer datasheet to confirm RoHS compliance and halogen-free status. Ensure the ordering code matches the exact DO-219AB package variant required for your PCB footprint. Cross-reference the AEC-Q101 certification requirements if the application mandates automotive-grade components. Confirm that the 1000V rating aligns with the system's peak inverse voltage demands.

Selection Notes

Select this component when high-speed switching and robust avalanche ruggedness are required in a compact SMD form factor. The 120 ns recovery time suits frequencies significantly higher than standard fast recovery diodes. Consider the 1.6 V forward voltage drop for thermal management calculations. The DO-219AB package offers a balance between current handling and board space efficiency compared to larger through-hole alternatives.

Part Context

This part belongs to Vishay’s AU1F/AR1F series of surface-mount ultrafast rectifiers. It shares the SMF (DO-219AB) footprint with other variants in the family, differing primarily in voltage ratings and recovery speeds. The series is designed to replace bulkier axial-leaded counterparts in modern high-density electronics while maintaining high reliability standards for industrial and automotive sectors.

Replacement Considerations

Direct substitutes include AR1FG-M3/H and AR1FK-M3/H from the same Vishay series, which share identical packaging and general specifications but may differ in specific voltage or recovery time characteristics. Verify pinout compatibility and thermal dissipation requirements before swapping.