GBU4M

Overview

The onsemi GBU4M is a single-phase rectifier bridge from the GBU4K series, designed for general-purpose power supply 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, offering 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 low forward voltage drop (Vf) of 1.1 V at rated current. The component operates within a junction temperature range of -55°C to +150°C and exhibits a low reverse leakage current (Ir) of 5 µA.

Feature Summary

• High thermal stability with a maximum operating junction temperature of 150°C
• Robust surge handling capability with 150 A peak non-repetitive forward surge current
• Low forward voltage drop for improved efficiency in power conversion circuits
• Compact GBU surface-mount package design for space-constrained PCB layouts

Applications

• General-purpose AC-DC power supplies
• Battery chargers
• Inverter circuits
• DC-DC converter input stages

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct voltage and current ratings. Confirm RoHS compliance status and packaging type directly with authorized distributors. Cross-reference the part number with the latest onsemi documentation to avoid discrepancies in revision levels or regional specifications before finalizing procurement orders.

Selection Notes

Select the GBU4M when a 400 V reverse voltage rating and 4 A continuous current are required in a surface-mount configuration. Ensure the application's peak surge currents remain below the 150 A Ifsm limit. Compare thermal resistance values against available heatsinking options if operating near the upper temperature limits. Verify that the GBU package dimensions fit the target PCB footprint constraints.

Part Context

The GBU4M belongs to the GBU4K series of single-phase rectifier bridges manufactured by onsemi. This series is characterized by its glass-passed chip junctions and high surge current capability. The GBU package provides a standardized outline for surface-mount mounting, facilitating automation in manufacturing processes while maintaining reliable performance in various industrial and consumer electronic applications.

Replacement Considerations

Direct replacements must match the 400 V Vrrm, 4 A Io, and GBU package form factor. Verify pinout compatibility and thermal characteristics. Consult onsemi's official substitution guide for validated alternatives within the same product family or equivalent third-party components with identical electrical specifications.