GBU8G

Bridge Rectifier Overview

The onsemi GBU8G is a single-phase bridge rectifier from the GBU8 series, designed for through-hole mounting in the GBU package. It features a peak repetitive reverse voltage of 400 V and an average forward rectified current of 8 A. The device exhibits a maximum forward voltage drop of 1 V at 8 A and a low reverse leakage current of 5 µA at 400 V. It supports a junction temperature range from -55°C to 150°C and includes UL certification (File E258596). The component utilizes glass-passivated junctions and molded plastic construction for reliability.

Bridge Rectifier Feature Summary

• Glass-passivated junctions provide mechanical integrity and enhanced stability against external chemical agents.
• Molded plastic technology ensures a reliable, low-cost structure suitable for printed circuit board applications.
• UL recognized component certification facilitates compliance in end-product designs.

Bridge Rectifier Applications

• General-purpose AC to DC power supply conversion
• Battery charging circuits
• DC motor drive rectification

Bridge Rectifier Procurement Notes

Verify the manufacturer part number GBU8G against official onsemi documentation to ensure authenticity. Confirm that the ordering suffix matches the required specifications, as suffixes may indicate variations in packaging or specific manufacturing lot attributes without altering the electrical function. Cross-reference with authorized distributors to validate supply chain integrity.

Bridge Rectifier Selection Notes

Select the GBU8G when a 400 V reverse voltage rating and 8 A continuous current capacity are required for single-phase rectification. Ensure the design accommodates the GBU through-hole footprint and operates within the specified -55°C to 150°C junction temperature range. Consider thermal management requirements given the 1 V forward voltage drop at full load.

Bridge Rectifier Part Context

The GBU8G belongs to the GBU8 family of single-phase bridge rectifiers manufactured by onsemi. This series shares common physical dimensions and pin configurations but varies primarily in peak reverse voltage ratings. The GBU8G specifically targets applications requiring 400 V blocking capability, distinguishing it from higher voltage variants like the GBU8K or lower voltage counterparts within the same package line.

Bridge Rectifier Replacement Considerations

Publicly confirmed substitute part numbers include GBU4K-BP, GBU8A-BP, and GBU8K-BP from Micro Commercial Components (MCC). Verify electrical parameter compatibility, particularly reverse voltage and forward current ratings, before substituting these similar components.