GBU4K

Overview

The onsemi GBU4K is a single-phase bridge rectifier designed for through-hole mounting in the GBU-4 package. It features a peak repetitive reverse voltage (Vrrm) of 800 V and an average forward rectified current (Io) of 4 A. The device exhibits a maximum forward voltage drop (Vf) of 1 V at 4 A and a low reverse leakage current of 5 µA at 800 V. It supports a peak non-repetitive forward surge current (Ifsm) of 200 A and operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• High thermal stability with a maximum operating junction temperature of 150°C
• Robust surge handling capability with a 200 A peak non-repetitive forward surge rating
• Low leakage current characteristics ensuring efficient reverse blocking performance

Applications

• General-purpose AC-to-DC power supply circuits
• Battery charging systems requiring high reverse voltage tolerance
• Industrial control equipment power stages

Procurement Notes

Verify the specific suffix against official datasheets to confirm electrical ratings, as variations exist within the GBU series. Ensure compliance with RoHS directives if required by the application. Confirm package dimensions match the PCB footprint design before finalizing procurement orders.

Selection Notes

Select this component when an 800 V reverse voltage rating is necessary for mains-connected applications. The 4 A current capacity suits moderate power loads. Verify that the GBU-4 through-hole package fits the assembly constraints and that the 150°C thermal rating aligns with the system's cooling strategy.

Part Context

The GBU4K belongs to the GBU series of bridge rectifiers from onsemi, which are standardized for general-purpose power conversion. This series utilizes a robust plastic encapsulate designed for high mechanical strength and thermal dissipation, making it suitable for various industrial and consumer electronics applications.

Replacement Considerations

Cross-reference with other manufacturers' GBU-4 packages rated for 800 V and 4 A. Verify pinout compatibility and thermal resistance values to ensure equivalent performance in the existing circuit design without modification.