GBU4K-M3/51

Overview

The GBU4K-M3/51 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features a maximum average forward rectified current of 4 A and a repetitive peak reverse voltage of 1000 V. The device utilizes glass passivation for junction protection and is housed in an isolated GBU plastic package with pin configurations suitable for board mounting. It supports a maximum non-repetitive peak forward surge current of 150 A at 8.3 ms half-sine wave conditions. The component operates within a temperature range from -55 °C to +150 °C for both junction and storage environments.

Feature Summary

• Glass passivated junctions provide enhanced durability and resistance to mechanical stress.
• Isolated plastic package design allows for direct mounting to heat sinks without additional insulators.
• High surge current capability ensures robustness against transient overload events.

Applications

• General-purpose AC to DC conversion in power supply circuits
• Bridge rectification in battery charging systems
• DC output stages in industrial control equipment

Procurement Notes

Verify the specific suffix /51 indicates reel packaging configuration when sourcing. Confirm RoHS compliance status through official datasheets as manufacturing processes may evolve. Check for obsolescence notices or product change notifications prior to finalizing procurement plans to ensure long-term availability.

Selection Notes

Select this component where high voltage isolation and moderate current handling are required. Ensure thermal management strategies account for the specified junction temperature limits. Verify that the package dimensions align with the target PCB layout constraints before integration into the design.

Part Context

This part belongs to the GBU series of bridge rectifiers, designed for general-purpose applications requiring reliable performance in compact spaces. The M3 suffix typically denotes lead-free and halogen-free construction compliant with international environmental standards.

Replacement Considerations

Direct replacements must match the 4 A current rating, 1000 V reverse voltage, and GBU package footprint. Verify equivalent surge current capabilities and thermal characteristics to maintain circuit reliability during substitution.