GBU4K-E3/45

Overview

The GBU4K-E3/45 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features an 800 V peak reverse repetitive voltage and supports a maximum average forward rectified current of 4 A. The device utilizes glass passivated junctions for enhanced stability and operates within a temperature range of -55°C to +150°C. Key electrical parameters include a peak non-repetitive forward surge current of 150 A, a maximum forward voltage of 1 V, and a low reverse leakage current of 5 µA. It is housed in a GBU through-hole package with solder pin termination.

Feature Summary

• Glass passivated junction construction ensures high reliability and stable performance under varying conditions.
• High surge current capability allows the component to withstand transient overloads effectively.
• Low forward voltage drop contributes to improved efficiency and reduced power dissipation during operation.

Applications

• General-purpose AC to DC conversion in power supply circuits
• Bridge rectification in industrial control systems
• Power conditioning modules requiring robust thermal performance

Procurement Notes

Verify the manufacturer part number against official Vishay documentation to ensure authenticity. Confirm that the E3 suffix indicates lead-free compliance and RoHS standards are met for your specific regulatory requirements. Check datasheets for any recent production changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when an 800 V rating and 4 A continuous current capacity are required in a standard GBU footprint. Ensure the application environment stays within the specified -55°C to +150°C operating temperature range. Consider the 150 A surge rating if the circuit experiences significant inrush currents during startup.

Part Context

This part belongs to the Vishay GBU series of single-phase bridge rectifiers. The GBU4 variant specifically denotes a 4 A current rating within this family. The K suffix typically indicates the 800 V voltage class, distinguishing it from other voltage ratings like J (600 V) or H (700 V) in the same physical package.

Replacement Considerations

Direct substitutes may include other Vishay GBU4K variants with identical electrical specifications. Cross-manufacturer replacements must match the 800 Vrrm, 4 A If, and GBU package dimensions precisely to ensure mechanical compatibility and electrical safety.