UH4PBCHM3/87A

Diode Arrays Overview

The UH4PBCHM3/87A is a dual common cathode ultra-fast recovery rectifier manufactured by Vishay Semiconductors. It utilizes the eSMP (TO-277A-3) surface-mount package and is qualified to AEC-Q101 standards for automotive applications. The device features a repetitive reverse voltage of 400 V and an average forward current of 4 A per section. Key electrical parameters include a maximum forward voltage of 1.5 V at 2 A, a peak non-repetitive surge current of 60 A, and a typical reverse leakage current of 5 µA. The component exhibits a fast recovery time of 35 ns with low stored charge characteristics.

Diode Arrays Feature Summary

• Dual common cathode configuration providing two independent rectifying sections within a single compact surface-mount package.
• Ultra-fast recovery characteristics designed to minimize switching losses and reduce electromagnetic interference in high-frequency circuits.
• Automotive qualification compliant with AEC-Q101 stress testing requirements for reliability in demanding environments.

Diode Arrays Applications

• Automotive DC-DC converter modules
• High-frequency synchronous rectification circuits
• Isolated power supply output stages

Diode Arrays Procurement Notes

Verify the specific suffix against the manufacturer's latest datasheet to confirm pinout compatibility and electrical tolerances. Ensure that the ordering information matches the exact package variant required for your PCB footprint. Cross-reference the AEC-Q101 certification status if the application mandates strict automotive grade compliance. Confirm lead times and availability directly with authorized distributors as stock levels fluctuate.

Diode Arrays Selection Notes

Select this component when a dual rectifier solution is required in a space-constrained design. The TO-277A-3 package offers improved thermal performance compared to smaller SMD packages while maintaining a low profile. Consider the 400 V rating for intermediate bus voltages and the 35 ns recovery time for switching frequencies exceeding standard fast recovery diodes. Evaluate the forward voltage drop impact on overall system efficiency under full load conditions.

Diode Arrays Part Context

This part belongs to Vishay's eSMP series of surface mount rectifiers. The series is engineered to replace larger through-hole components in modern electronics. The UH4PBCHM3/87A specifically targets applications requiring robust reverse blocking capabilities and rapid turn-off speeds. It is part of a broader family of automotive-grade discrete semiconductors designed for high reliability.

Diode Arrays Replacement Considerations

Direct replacements must match the TO-277A-3 package, 4 A current rating, 400 V reverse voltage, and dual common cathode configuration. Verify that any substitute also meets AEC-Q101 requirements if automotive use is intended. Check for equivalent recovery time and forward voltage specifications to ensure circuit performance remains unchanged.