AS3PDHM3/86A

Overview

The AS3PDHM3/86A is a high current density surface mount ultrafast rectifier from Vishay General Semiconductor. It utilizes the eSMP Series K package (TO-277A) and features an oxide planar chip junction for robust performance. The device is AEC-Q101 qualified, ensuring suitability for automotive applications. Key electrical characteristics include a forward current of 3.0 A, a reverse voltage rating ranging from 200 V to 1000 V, and a maximum junction temperature of 175 °C. It offers ultrafast recovery times suitable for high-frequency operation and low leakage current.

Feature Summary

• Ultrafast recovery times optimized for high-frequency switching applications
• Oxide planar chip junction design providing enhanced reliability
• Controlled avalanche characteristics for rugged operation
• Very low profile construction ideal for automated placement processes

Applications

• Automotive power supply circuits requiring AEC-Q101 compliance
• High-frequency DC-DC converters and synchronous rectification
• Free-wheeling diode applications in industrial power systems
• Surface mount assembly in space-constrained electronic devices

Procurement Notes

Verify the specific reverse voltage variant required, as the AS3P series spans multiple ratings. Confirm the ordering suffix matches the desired voltage class. Ensure the component meets RoHS and WEEE directives if environmental compliance is mandatory. Check for halogen-free status according to IEC 6149-2-21 definitions. Validate moisture sensitivity level requirements against J-STD-020 standards before procurement.

Selection Notes

Select this component when high current density and ultrafast recovery are critical. The TO-277A package supports automated placement due to its low profile. Consider the avalanche capability if inductive load switching is present. Ensure the operating junction temperature does not exceed 175 °C. Verify that the selected voltage rating accommodates peak reverse voltages in the circuit.

Part Context

This part belongs to Vishay's eSMP Series K family of surface mount rectifiers. It shares the TO-277A (SMPC) footprint with other high-current devices in the lineup. The series emphasizes low profile and high reliability for modern PCB assembly techniques. It complements standard recovery diodes by offering faster switching speeds for efficient power conversion designs.

Replacement Considerations

Direct substitutes must match the TO-277A package, 3 A current rating, and ultrafast recovery specifications. Verify equivalent avalanche ratings and reverse voltage capabilities. Cross-reference AEC-Q101 qualification status for automotive replacements. Ensure thermal management requirements align with the original design constraints.