AU1FG-M3/H

Overview

The AU1FG-M3/H is a single ultrafast recovery rectifier manufactured by Vishay Semiconductors. It features a 400 V repetitive peak reverse voltage and a 1 A average forward current rating. The device utilizes the eSMP (SMF) surface-mount package, specifically DO-219AB. Key electrical parameters include a maximum forward voltage of 1.85 V at rated current and a low reverse leakage current of 1 µA. It supports a maximum surge current of 25 A and operates within a junction temperature range of -55 °C to +175 °C.

Feature Summary

• Ultrafast recovery characteristics for high-frequency switching applications
• Avalanche-rated capability for robust operation in inductive load circuits
• Surface-mount SMF (DO-219AB) package design for automated assembly

Applications

• High-frequency power supply rectification
• Inductive load freewheeling diodes
• DC-DC converter output stages

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm exact electrical tolerances and marking codes. Ensure the ordering part number matches the required package variant and compliance standards. Cross-reference datasheet revisions to confirm parameter consistency before finalizing procurement specifications.

Selection Notes

Select this component when a 400 V blocking voltage and 1 A continuous current are required in a compact surface-mount form factor. The avalanche rating makes it suitable for circuits with potential voltage spikes. Compare thermal resistance values against similar packages if heat dissipation is a critical constraint in the PCB layout.

Part Context

This device belongs to Vishay's AU1P series of ultrafast rectifiers. It shares the eSMP packaging technology found in other Vishay surface-mount diodes but is distinguished by its specific 400 V voltage rating and avalanche capability. It serves as a specialized alternative to standard fast recovery diodes in space-constrained designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout compatibility and thermal characteristics before considering any generic equivalents.