AR1FK-M3/H

Overview

The AR1FK-M3/H is a single avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum DC reverse voltage (Vr) of 800 V and an average rectified forward current (Io) of 1 A. The device utilizes the DO-219AB (SMF) surface mount package. Key electrical parameters include a maximum forward voltage (Vf) of 1.6 V at 1 A, a maximum reverse leakage current (Ir) of 1 µA at 800 V, and a typical junction capacitance of 10 pF at 4 V and 1 MHz. It is qualified to AEC-Q101 standards for automotive applications.

Feature Summary

• Engineered with avalanche ruggedness technology to withstand repetitive avalanche energy conditions without degradation.
• Complies with AEC-Q101 qualification standards, ensuring reliability for demanding automotive electronic environments.
• Utilizes a compact DO-219AB (SMF) surface-mount package designed for automated assembly and space-constrained PCB layouts.

Applications

• Automotive power supply circuits requiring high-reliability rectification
• Inductive load switching protection in vehicle electronics
• General-purpose rectification in automotive-grade power management modules

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm exact packaging configuration and tape-and-reel specifications. Ensure that the procurement source provides valid traceability records consistent with automotive quality requirements. Cross-reference the manufacturer part number directly with the datasheet to avoid substitution errors due to minor nomenclature variations.

Selection Notes

Select this component when an 800 V blocking capability is required alongside a 1 A continuous current rating in a small surface-mount footprint. The avalanche-rated construction makes it suitable for circuits prone to voltage transients or inductive kickback. Consider the AEC-Q101 qualification if the application mandates automotive-grade reliability standards over standard industrial components.

Part Context

This component belongs to Vishay's SMF series of fast recovery rectifiers. The 'M3' suffix indicates compliance with RoHS directives and absence of halogenated substances. The 'H' suffix typically denotes a specific internal manufacturing lot or packaging variant defined by the manufacturer. It is distinct from non-avalanche variants within the same voltage class.

Replacement Considerations

Direct substitutes must match the 800 V Vr, 1 A Io, DO-219AB package, and avalanche capability. Verify pinout compatibility and thermal characteristics before integration. No alternative part numbers are confirmed in the provided reference data.