AR1FM-M3/I

Overview

The AR1FM-M3/I is a single-channel avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It utilizes silicon technology and is housed in the DO-219AB (SMF) surface-mount package. The device supports an average forward current of 1 A and withstands a maximum DC reverse voltage of 1000 V. Key electrical characteristics include a forward voltage of 1.6 V at 1 A, a reverse leakage current of 1 µA at 1000 V, and a junction capacitance of 9.3 pF at 4 V and 1 MHz. It operates within a temperature range of -55°C to +175°C.

Feature Summary

• Engineered with avalanche technology for robust operation under high-voltage conditions
• Certified to AEC-Q101 standards for automotive reliability requirements
• Designed for surface-mount assembly using the compact SMF package

Applications

• Automotive electronics systems requiring high-reliability components
• High-voltage power supply circuits
• Industrial control applications

Procurement Notes

Verify the specific suffix against official documentation to confirm exact specifications. Ensure compatibility with existing circuit designs regarding voltage ratings and thermal management. Confirm RoHS compliance status through manufacturer datasheets before integration into production workflows.

Selection Notes

Select this component for applications demanding high reverse voltage capability combined with avalanche ruggedness. The DO-219AB package offers space efficiency for dense PCB layouts. Consider the 1 A current rating and wide operating temperature range when evaluating suitability for harsh environments or automotive use cases.

Part Context

This part belongs to Vishay's general-purpose avalanche rectifier lineup designed for surface-mount applications. The series provides reliable performance in high-voltage scenarios where standard rectifiers might fail due to transient overvoltage events. It serves as a specialized solution for protecting sensitive downstream components in power distribution networks.

Replacement Considerations

Consult official substitution guides for verified equivalents. Cross-reference parameters such as peak repetitive reverse voltage, forward current capacity, and package dimensions to ensure functional compatibility without compromising circuit integrity.