GBU4A-M3/45

Overview

The GBU4A-M3/45 is a single-phase bridge rectifier from Vishay General Semiconductor, utilizing Glass Passivated Chip technology. It features a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 4 A per lead. The device exhibits a maximum DC forward voltage drop of 1.0 V at 4 A and a non-repetitive peak forward surge current capability of 150 A. Operating within a junction temperature range of -55°C to +150°C, it is housed in a GBU surface-mount package designed for high reliability.

Feature Summary

• Glass passivation provides long-term stability and protects the junction against mechanical stress.
• High surge current capability ensures robustness during transient overload conditions.
• Low forward voltage drop contributes to improved system efficiency.

Applications

• AC-DC power supply circuits
• Battery chargers
• General-purpose rectification

Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as variations exist between tube and reel configurations. Confirm RoHS compliance status through official datasheets or manufacturer declarations prior to integration into environmentally regulated assemblies.

Selection Notes

Select this component when a 4 A current rating and 400 V blocking voltage are required in a compact surface-mount footprint. Ensure the thermal management design accommodates the power dissipation associated with the specified forward voltage drop at the expected operating load.

Part Context

This part belongs to the GBU series of glass-passivated bridge rectifiers. It shares the standard GBU outline dimensions with other variants in the family, differing primarily in voltage and current ratings. The M3 suffix indicates Halogen-free and RoHS-compliant construction.

Replacement Considerations

Direct replacements must match the 4 A current rating, 400 V reverse voltage, and GBU package type. Verify that alternative manufacturers offer equivalent forward voltage characteristics and thermal performance to ensure circuit compatibility.