AS3PMHM3/86A

Overview

The AS3PMHM3/86A is a single fast recovery rectifier from Vishay, utilizing FRED Pt technology. It features a 1000 V repetitive peak reverse voltage and a 3 A average forward current rating. The device exhibits a typical forward voltage of 900 mV at 3 A and a maximum reverse leakage current of 280 nA. Its ultrafast recovery time is specified as 1.2 µs, with a peak non-repetitive surge current capability of 70 A. Designed for surface mount applications in the TO-277A (SMPC) package, it operates within a junction temperature range of -55 °C to +175 °C and holds AEC-Q101 automotive qualification.

Feature Summary

• Utilizes FRED Pt technology for optimized switching performance and low reverse recovery charge.
• Features an oxide planar chip junction structure for enhanced reliability and ruggedness.
• Includes avalanche rated capability for robust operation under transient overvoltage conditions.
• Complies with RoHS directives and is halogen-free according to IEC 61249-2-21 definitions.

Applications

• Automotive electronics systems requiring AEC-Q101 qualified components
• High frequency DC-DC converters and power supplies
• Freewheeling diodes in high-speed switching circuits

Procurement Notes

Verify the specific suffix /86A against the manufacturer datasheet to confirm tape and reel packaging specifications. Ensure the ordering part number matches the exact electrical characteristics required for the target application. Cross-reference the component marking with official Vishay identification guides to prevent counterfeit parts. Confirm compliance with current REACH and SVHC status before integration into regulated supply chains.

Selection Notes

Select this component when high voltage isolation of 1000 V is required alongside moderate current handling of 3 A. The TO-277A package offers a compact footprint suitable for automated surface mount assembly processes. Consider the 1.2 µs recovery time for applications demanding reduced switching losses compared to standard recovery diodes. Verify thermal management requirements given the wide operating temperature range up to 175 °C.

Part Context

This rectifier belongs to Vishay's eSMP series, designed for high current density surface mount applications. The AS3P series specifically targets automotive and industrial markets needing reliable high-voltage switching. The HM3 designation indicates lead-free termination plating compliant with international environmental standards. The /86A suffix typically denotes specific packaging configurations such as cut tape or reel options.

Replacement Considerations

Direct substitutes include the AS3PMHM3_A/H variant, which shares identical electrical ratings and package dimensions. Other Vishay FRED Pt devices in the TO-277A package may serve as functional alternatives if pinout compatibility is maintained. Verify that any replacement maintains the same avalanche rating and reverse leakage specifications for critical circuit protection.