GBU8K-5E3/51

Overview

The GBU8K-5E3/51 is a single-phase bridge rectifier from Vishay General Semiconductor, utilizing the GBU surface-mount package. It features glass-passivated junctions for enhanced stability and reverse leakage current resistance. The device provides an average forward rectified current of 8 A and supports a peak repetitive reverse voltage of 800 V. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 200 A at 60 Hz, a typical forward voltage drop of 1 V, and a low reverse current of 5 µA. It operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Glass passivation provides improved stability and lower reverse leakage currents compared to molded compounds.
• Surface mount GBU package enables automated assembly and reduced footprint in power supply designs.
• High surge current capability ensures robustness against transient overloads during startup or fault conditions.

Applications

• AC-to-DC conversion in general-purpose power supplies.
• Battery chargers requiring high reliability and compact form factors.
• Adapters and inverters for consumer electronics.

Procurement Notes

Verify the exact part number suffix, as standard datasheets typically list GBU8K-E3/51 or similar variants. Confirm RoHS compliance status and specific packaging quantities with the distributor. Ensure the ordering code matches the required voltage and current ratings for the target application circuit design.

Selection Notes

Select this component when a surface-mount solution is required for 800 V applications. Compare the GBU package dimensions against available PCB space. Consider thermal management requirements given the 8 A continuous current rating and the thermal resistance of the GBU housing.

Part Context

This component belongs to the Vishay GBU8 series of single-phase bridge rectifiers. The series offers various voltage ratings (e.g., 50 V to 1000 V) while maintaining a consistent 8 A current rating and standardized GBU footprint, facilitating design flexibility across different power supply architectures.

Replacement Considerations

Direct substitutes include GBU8K-E3/51 and GBU8K-M3/51 from Vishay. Cross-brand equivalents such as those from Diodes Incorporated or ON Semiconductor in the GBU package should be verified for matching pinout, voltage, and current specifications before integration.