GBU4K-E3/51

Overview

The GBU4K-E3/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes glass passivation technology and is housed in the GBU surface-mount package. The device supports a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 4 A. Key electrical characteristics include a maximum forward voltage drop of 1 V at rated current, a peak non-repetitive forward surge current capability of 150 A, and a low reverse leakage current of 5 µA at 400 V. It operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Glass passivated for environmental stability
• Surface mount GBU package design
• High surge current handling capability

Applications

• General purpose AC to DC conversion
• Power supply input stages
• Bridge rectification in compact electronics

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm voltage ratings and packaging details. Confirm RoHS compliance status through the manufacturer's current datasheet. Check component availability as distribution statuses change frequently. Ensure the source is an authorized distributor to guarantee authenticity.

Selection Notes

Select this component when a surface-mount bridge rectifier with 400 V blocking voltage and 4 A continuous current is required. Compare the GBU package dimensions against PCB layout constraints. Evaluate thermal management requirements based on the 1 V forward voltage drop at full load. Consider the 150 A surge rating for inrush current protection needs.

Part Context

This part belongs to the GBU series of surface-mount bridge rectifiers from Vishay. The series offers various voltage ratings while maintaining a consistent mechanical footprint. The E3 suffix indicates lead-free and halogen-free construction compliant with RoHS directives. The /51 suffix typically denotes specific tape-and-reel packaging configurations.

Replacement Considerations

Direct replacements must match the 400 V reverse voltage, 4 A forward current, and GBU package outline. Verify that substitute components share the same 1 V forward voltage and 5 µA leakage specifications. Ensure the alternative device supports the same operating temperature range and mounting style.