GBU4J

Overview

The onsemi GBU4J is a single-phase rectifier bridge designed for general-purpose power conversion applications. It features a peak repetitive reverse voltage (Vrrm) of 400 V and an average forward rectified current (Io) of 4 A. The device utilizes a GBU surface-mount package with four pins, providing a compact footprint suitable for automated assembly. Key electrical characteristics include a maximum non-repetitive peak forward surge current (Ifsm) of 150 A and a typical forward voltage drop (Vf) of 1.1 V at rated current. The component operates within a junction temperature range of -55°C to +175°C, ensuring reliability in demanding thermal environments.

Feature Summary

• High-temperature operation capability up to 175°C junction temperature
• Compact GBU surface-mount package design for space-constrained PCB layouts
• Robust surge current handling with 150 A peak non-repetitive rating

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to confirm exact electrical tolerances and packaging options. Ensure compatibility with standard reflow soldering profiles for the GBU package. Confirm that the selected variant meets all required safety certifications for the target end-use application before finalizing procurement.

Selection Notes

Select this component when a 4 A current rating and 400 V blocking voltage are required in a surface-mount form factor. Compare the 1.1 V forward voltage drop against system efficiency targets. Consider the 175°C operating limit for high-ambient temperature designs. Evaluate mechanical constraints to ensure the GBU package dimensions fit the available board space.

Part Context

The GBU4J belongs to the GBU series of single-phase rectifier bridges from onsemi. This series is characterized by its robust construction and suitability for high-volume manufacturing. The GBU package offers a balance between current handling capacity and board space efficiency, making it a common choice for mid-power AC-DC conversion modules.

Replacement Considerations

Direct pin-to-pin replacements may include other manufacturers' GBU4 variants with identical 4 A/400 V ratings. Verify equivalent Vf and Ifsm specifications. Check for compatible mounting hole patterns and lead frame materials to ensure mechanical and thermal performance parity.