GBU4D

Overview

The onsemi GBU4D is a single-phase bridge rectifier designed for through-hole mounting in the GBU-4 package. It features a peak repetitive reverse voltage of 400 V and a maximum average forward rectified current of 4 A. The device exhibits a typical forward voltage drop of 1 V at rated current and supports a maximum non-repetitive peak surge current of 150 A. Operating temperatures range from -55 °C to +150 °C, with a low reverse leakage current of 5 µA.

Feature Summary

• Robust thermal management capability supporting high junction temperatures up to 150 °C
• High surge current handling capacity for transient protection
• Low forward voltage drop for improved power conversion efficiency

Applications

• AC-DC power supply circuits
• Battery charging systems
• General-purpose rectification in industrial equipment

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package dimensions and pinout alignment before integration. Ensure compliance with project-specific environmental regulations regarding material composition. Validate supplier documentation for traceability and quality assurance standards prior to procurement.

Selection Notes

Select this component when a 400 V rating and 4 A continuous current are required in a standard GBU footprint. Consider the 150 A surge capability for applications with high inrush currents. Evaluate thermal dissipation requirements based on the 150 °C maximum junction temperature limit and ambient operating conditions.

Part Context

The GBU4D belongs to the GBU series of bridge rectifiers from onsemi, which provides standardized solutions for general-purpose power rectification. This series utilizes a robust plastic encapsulation suitable for through-hole assembly, offering a balance of electrical performance and mechanical durability for various commercial and industrial power supply designs.

Replacement Considerations

Direct substitutes include other 4A/400V bridge rectifiers in the GBU-4 package such as the GBU4K (800V) if voltage headroom allows, or equivalent parts from other manufacturers like Vishay or Littelfuse that match the 4A/400V specification and pinout.