AR1FGHM3/I

Overview

The AR1FGHM3/I is a single fast recovery rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a 400 V reverse voltage rating and supports an average forward current of 1 A. The device utilizes the DO-219AB (SMF) surface-mount package. Key electrical parameters include a maximum forward voltage of 1.25 V, a peak repetitive reverse current of 1 µA, and a maximum surge current of 30 A. The component exhibits a reverse recovery time of 140 ns and operates within a junction temperature range of -55°C to +175°C.

Feature Summary

• Fast recovery avalanche technology for efficient switching applications
• High thermal stability with extended operating temperature range
• Surface-mount design in compact DO-219AB package

Applications

• High-frequency power supply circuits
• Inductive load switching protection
• Free-wheeling diode applications in DC-DC converters

Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or tape-and-reel specifications rather than functional differences. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to procurement. Ensure the requested part number matches the exact electrical ratings required for the target circuit design.

Selection Notes

Select this component when a fast recovery rectifier with avalanche capability is required in a small surface-mount footprint. The 400 V rating suits low-to-medium voltage AC/DC conversion stages. Compare the 140 ns recovery time against system switching frequencies to ensure minimal reverse recovery losses. Verify that the 1 A continuous current rating aligns with the application's thermal management capabilities.

Part Context

This device belongs to Vishay’s AR1F series of fast recovery rectifiers designed for high-efficiency power electronics. The series offers a balance of speed and ruggedness, suitable for modern compact power supplies. The AR1FG variant specifically targets applications requiring avalanche energy handling alongside fast switching characteristics.

Replacement Considerations

Consult official substitution guides for verified equivalents. Cross-reference key parameters such as reverse voltage, forward current, and recovery time when evaluating alternative components.