AU1FM-M3/I

Overview

The AU1FM-M3/I is a surface-mount ultrafast avalanche rectifier from Vishay General Semiconductor, housed in an SMF (DO-219AB) package. It supports a maximum repetitive peak reverse voltage of 1000 V and an average forward current of 1.0 A. The device features a 75 ns maximum reverse recovery time and withstands a peak forward surge current of 25 A. Electrical characteristics include a maximum instantaneous forward voltage of 1.85 V at 1.0 A and a maximum reverse current of 1 μA at rated voltage. It operates within a junction temperature range of -55 °C to +175 °C.

Feature Summary

• Ultrafast recovery times optimized for high-frequency operation
• Avalanche capability with non-repetitive avalanche energy rating
• Glass passivated pellet chip junction for enhanced reliability
• Low profile package suitable for automated placement

Applications

• General purpose rectification of power supplies
• Inverter circuits
• Converter applications
• Freewheeling diodes for consumer electronics
• Automotive systems
• Telecommunication equipment

Procurement Notes

Verify the specific ordering code suffix against official documentation to confirm packaging details. The 'I' suffix indicates delivery in a 13-inch diameter plastic tape and reel format with a base quantity of 10,000 units. Confirm compliance requirements such as RoHS and halogen-free status directly from the manufacturer's datasheet before finalizing procurement specifications.

Selection Notes

Select this component when designing circuits requiring high-voltage blocking capabilities up to 1000 V combined with fast switching speeds. The 1.0 A average forward current rating suits moderate power levels. Ensure thermal management accounts for the specified thermal resistance values. Verify that the operating environment falls within the -55 °C to +175 °C junction temperature range for reliable performance.

Part Context

This part belongs to the eSMP series of surface-mount ultrafast avalanche rectifiers. It shares the same mechanical outline and electrical characteristics as other variants in the AU1F family, differentiated primarily by their reverse voltage ratings. The AU1FM specifically denotes the 1000 V version within this lineup.

Replacement Considerations

Compatible substitutes include AU1FD, AU1FG, AU1FJ, and AU1FK, provided the circuit voltage requirements align with their respective lower reverse voltage ratings. Ensure any replacement maintains the required 1.0 A current handling and 75 ns recovery speed.