GBU4G

Overview

The onsemi GBU4G is a single-phase rectifier bridge designed for general-purpose power supply applications. It features an average forward rectified current of 4 A and a maximum repetitive peak reverse voltage of 400 V. The device utilizes the GBU surface-mount package, which provides robust mechanical stability and efficient thermal dissipation through direct board mounting. Key electrical characteristics include a maximum RMS input AC voltage of 280 V and a non-repetitive peak forward surge current rating of 150 A at 60 Hz. The component operates within a junction temperature range of -55°C to +150°C and exhibits a typical forward voltage drop of 1.1 V at rated current.

Feature Summary

• Surface-mount construction in a GBU package for automated assembly and compact PCB layout
• High surge current capability for handling transient load conditions
• Extended operating temperature range suitable for demanding industrial environments

Applications

• General-purpose DC power supplies
• Battery chargers
• Adapters and converters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging configuration and compliance status. Confirm that the requested variant matches the required voltage and current ratings for the target application. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a 4 A continuous current rating and 400 V blocking voltage are sufficient for the circuit design. Consider the GBU package dimensions for available PCB real estate and thermal management requirements. Ensure the operating environment remains within the specified -55°C to +150°C junction temperature limits to maintain reliability and performance standards.

Part Context

The GBU4G belongs to the GBU series of single-phase rectifier bridges manufactured by onsemi. This series is characterized by its surface-mount technology and high current density capabilities. The GBU4G specifically targets applications requiring moderate current levels with reliable reverse blocking performance in standard power conversion topologies.

Replacement Considerations

Direct replacements must match the 4 A current rating, 400 V reverse voltage, and GBU package footprint. Verify pinout compatibility and thermal resistance values to ensure equivalent performance in existing designs without modifying the PCB layout.