AR1PKHM3/85A

Overview

The AR1PKHM3/85A is an avalanche rectifier diode from Vishay’s eSMP® series, housed in a DO-220AA (SMP) surface-mount package. It features a maximum DC reverse voltage of 800 V and an average forward rectified 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.

Feature Summary

• Engineered with avalanche ruggedness for reliable operation under transient overvoltage conditions
• Utilizes planar passivation technology to ensure stable performance across the specified temperature range
• Designed for high-reliability applications requiring fast switching capabilities

Applications

• High-voltage power supply circuits
• Flyback diodes in inductive load protection
• Snubber circuits for voltage spike suppression

Procurement Notes

Verify the specific suffix '85A' against official Vishay documentation to confirm exact binning or testing criteria. Ensure the ordering quantity aligns with manufacturer standard packaging specifications. Confirm RoHS compliance status and REACH SVHC declarations prior to integration into final assemblies.

Selection Notes

Select this component when a surface-mount avalanche-rated diode is required for voltages up to 800 V. The DO-220AA package offers a compact footprint suitable for space-constrained designs. Consider the 120 ns reverse recovery time for compatibility with the target switching frequency and thermal management requirements.

Part Context

This part belongs to the AR1P series of avalanche rectifiers, which are designed to withstand repetitive avalanche energy. The eSMP® branding indicates a specific form factor optimized for automated assembly. These devices are commonly used in industrial and automotive electronics where robustness against voltage transients is critical.

Replacement Considerations

Consult official Vishay substitution guides for verified equivalents. Cross-reference parameters such as peak repetitive reverse voltage, forward current, and package dimensions to ensure functional compatibility without modifying the PCB layout.