AR1FD-M3/H

Overview

The AR1FD-M3/H is a surface-mount fast avalanche rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum repetitive reverse voltage of 200 V and an average forward rectified current of 1 A. The device utilizes the eSMP (DO-219AB) package for compact PCB integration. Key electrical characteristics include a maximum forward voltage of 1.25 V at 1 A, a reverse leakage current of 1 µA at 200 V, and a reverse recovery time of 140 ns. It supports a junction temperature range from -55°C to +175°C and carries AEC-Q101 automotive qualification.

Feature Summary

• Capable of handling avalanche energy conditions without degradation
• Designed for high-temperature operation up to 175°C junction temperature
• Automotive grade reliability certified under AEC-Q101 standards

Applications

• Automotive power supply circuits requiring avalanche robustness
• High-frequency switching applications in industrial electronics
• DC-DC converter stages with potential inductive load switching

Procurement Notes

Verify the specific suffix H against the official Vishay datasheet to confirm lead-free compliance and RoHS status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the AEC-Q101 certification requirements if the application mandates automotive-grade components. Confirm availability through authorized distributors as manufacturing schedules may vary.

Selection Notes

Select this component when circuit design requires a single diode capable of sustaining avalanche breakdown events during turn-off transients. The 200 V rating suits low-voltage DC bus applications where transient spikes are expected. The DO-219AB package offers a small form factor suitable for space-constrained designs. Consider the 140 ns reverse recovery time for switching frequency limitations in the target application.

Part Context

This device belongs to Vishay's AR1F series of surface-mount fast avalanche rectifiers. These components are engineered to withstand repetitive avalanche energy, making them suitable for harsh electrical environments. The series provides a compact alternative to through-hole solutions while maintaining high thermal stability and reliability for modern electronic assemblies.

Replacement Considerations

Consult Vishay documentation for direct cross-references. Verify that any substitute maintains the 200 V reverse voltage, 1 A current rating, and avalanche capability. Ensure the replacement package matches the DO-219AB footprint and pin configuration to avoid PCB redesign.