AR1PKHM3/84A

Overview

The AR1PKHM3/84A is a single avalanche rectifier diode from Vishay, designed for surface-mount applications in the DO-220AA (SMP) package. It features an 800 V DC reverse voltage rating and supports a continuous forward current of 1 A. Key electrical characteristics include a maximum forward voltage of 1.6 V at 1 A, a reverse leakage current of 1 µA at 800 V, and a reverse recovery time of 120 ns. The device operates within a junction temperature range of -55°C to +175°C and holds AEC-Q101 automotive qualification.

Feature Summary

• Engineered with avalanche ruggedness to withstand repetitive avalanche conditions without degradation
• Utilizes planar epitaxial construction for enhanced reliability and robust performance under stress
• Complies with AEC-Q101 standards for automotive electronics quality and durability requirements

Applications

• Automotive power supply circuits requiring avalanche-rated components
• Inductive load switching applications where flyback energy absorption is necessary
• High-reliability rectification in automotive-grade electronic control units

Procurement Notes

Verify the specific suffix /84A corresponds to the Tape & Reel packaging configuration when ordering. Confirm that the AEC-Q101 qualification status meets your specific automotive project requirements. Ensure the DO-220AA footprint matches your PCB design guidelines. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing processes.

Selection Notes

Select this component when an 800 V blocking capability is required alongside avalanche tolerance for inductive loads. The 1 A current rating suits moderate power applications. The DO-220AA package offers a compact solution for space-constrained designs. Consider the 120 ns recovery time for high-frequency switching constraints. Verify thermal management needs given the 175°C maximum junction temperature limit.

Part Context

This part belongs to Vishay's eSMP series of ultrafast and avalanche rectifiers. It shares the DO-220AA form factor with other Vishay SMD diodes but is distinct due to its avalanche capability and 800 V rating. It complements lower voltage variants like the AR1FMHM3/H and higher current options within the broader diode portfolio.

Replacement Considerations

Direct substitutes must match the 800 V rating, 1 A current, avalanche capability, and DO-220AA package. Check for equivalent AEC-Q101 qualification if automotive use is intended. Verify pinout compatibility and thermal characteristics before substitution.