AR1FG-M3/H

Overview

The AR1FG-M3/H is a fast recovery avalanche rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a 400 V reverse voltage rating and supports a continuous forward current of 1 A. The device utilizes the DO-219AB (SMF) surface-mount package. Key electrical specifications include a maximum forward voltage of 1.25 V at 1 A, a peak non-repetitive surge current capability of 30 A, and a low reverse leakage current of 1 µA. The component exhibits a typical reverse recovery time of 140 ns.

Feature Summary

• Incorporates avalanche technology to withstand repetitive avalanche energy conditions without degradation.
• Utilizes fast recovery epitaxial diode construction for efficient switching performance.
• Designed with a molded plastic outline compliant with RoHS directives and free from halogenated substances.

Applications

• High-frequency power supply circuits
• Free-wheeling rectification in DC/DC converters
• Protection against voltage spikes in inductive load switching

Procurement Notes

Verify the specific suffix codes on the ordering information to confirm the exact packaging configuration, such as tape and reel or cut tape quantities. Ensure that the procurement documentation explicitly references the Vishay General Semiconductor - Diodes Division manufacturer identifier to distinguish this component from similar generic fast recovery diodes. Confirm compliance requirements match the project specifications before finalizing orders.

Selection Notes

Select this component when a compact surface-mount solution is required for high-speed rectification applications. The 400 V rating makes it suitable for intermediate voltage levels where standard silicon rectifiers may lack sufficient speed. Consider the thermal management capabilities of the DO-219AB package relative to the expected ambient operating temperatures and current loads in the target design.

Part Context

This part belongs to the AR1F series of fast recovery rectifiers from Vishay. The series offers various voltage ratings including 200 V, 400 V, 600 V, and 1000 V options within the same SMF footprint. The M3 suffix indicates lead-free composition and environmental compliance, while the H suffix typically denotes specific packaging variations.

Replacement Considerations

Cross-reference with AR1FM-M3/H for higher voltage requirements or AR1FJ-M3/H for alternative voltage ratings within the same package family. Verify pinout compatibility and thermal characteristics when substituting with other manufacturers' fast recovery diodes in the DO-219AB form factor.