GBU4B-E3/45

Overview

The GBU4B-E3/45 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a peak repetitive reverse voltage of 400 V and an average forward rectified current of 4 A per leg. The device utilizes the GBU surface-mount package with four pins and operates within a junction temperature range of -55°C to +150°C. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 150 A and a typical forward voltage drop of 1 V at rated current. The component complies with RoHS 3 standards and carries an EAR99 classification.

Feature Summary

• Glass-passivated silicon p-n junction construction for enhanced reliability
• High surge current capability suitable for inrush protection applications
• Surface-mount GBU package design optimized for automated PCB assembly

Applications

• General-purpose AC-to-DC power supply rectification
• Battery charging circuits requiring 400V isolation
• Industrial control systems utilizing surface-mount topology

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm pinout orientation and marking codes, as variations may exist within the GBU4 series. Confirm RoHS 3 compliance status directly with the manufacturer or authorized distributors prior to procurement, ensuring the component meets current environmental regulations for the intended market. Cross-reference the datasheet revision date to ensure alignment with latest mechanical drawings.

Selection Notes

Select this component when a 4 A continuous current rating and 400 V blocking voltage are required in a compact surface-mount footprint. Ensure the application's thermal management strategy accommodates the GBU package's dissipation characteristics. Verify that the expected surge currents remain below the 150 A limit to prevent device failure during startup or fault conditions.

Part Context

This part belongs to the GBU4 series of glass-passivated bridge rectifiers from Vishay. The series offers various voltage ratings while maintaining consistent current handling and package dimensions. The GBU4B variant specifically addresses applications requiring 400 V reverse voltage capability within the standard GBU form factor.

Replacement Considerations

Direct replacements must match the 4 A current rating, 400 V reverse voltage, and GBU package outline. Verify pin configuration compatibility before substitution.