GBU4D-E3/51

Overview

The GBU4D-E3/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes glass-passivated junctions for reverse voltage protection and is housed in the GBU plastic package designed for surface-mount PCB mounting. The device features a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 4 A at 25°C. It supports a non-repetitive peak forward surge current of 150 A. The component operates within a junction temperature range of -55°C to +150°C, with a typical forward voltage drop of 1 V at 4 A.

Feature Summary

• Glass-passivated junctions provide reliable protection against reverse voltage fluctuations.
• High current capability with 4 A average forward rectified current rating.
• Designed for surface-mount applications using the standardized GBU package.

Applications

• General-purpose rectification in AC-to-DC power supply circuits.
• Bridge rectifier configurations in battery charging systems.
• DC output stages in industrial control equipment.

Procurement Notes

Verify the specific suffix /51 corresponds to the tube packaging configuration required for assembly. Confirm RoHS compliance status through the official datasheet as manufacturing locations may vary. Ensure the ordering part number matches the exact electrical specifications needed for the target circuit design before finalizing procurement.

Selection Notes

Select this component when a 400 V reverse voltage rating and 4 A continuous current are required in a surface-mount form factor. Compare thermal resistance values against the application's heat dissipation capabilities. Verify that the GBU package dimensions fit the available PCB footprint constraints compared to alternative through-hole or smaller SMD bridge rectifiers.

Part Context

This part belongs to Vishay’s GBU series of single-phase bridge rectifiers, which are widely used in compact power conversion designs. The GBU4D variant specifically denotes the 400 V blocking voltage class within this family. The E3 suffix indicates lead-free termination and RoHS compliance, aligning with modern environmental standards for electronic components.

Replacement Considerations

Direct replacements must match the 4 A current, 400 V voltage, and GBU package. Equivalent parts from other manufacturers should be verified for identical pinout and thermal characteristics to ensure compatibility without PCB redesign.