GBU4K-M3/45

Overview

The GBU4K-M3/45 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features an 800 V repetitive peak reverse voltage and supports a maximum average forward rectified current of 4 A. The device utilizes glass passivation for environmental protection and is housed in a GBU through-hole package with solder pin termination. Key electrical characteristics include a peak non-repetitive forward surge current of 150 A, a maximum forward voltage drop of 1 V, and a low reverse leakage current of 5 μA. It operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Glass passivated die provides enhanced environmental protection and reliability.
• High surge current capability accommodates transient load conditions.
• Low forward voltage drop contributes to improved system efficiency.

Applications

• General purpose AC-DC power supply circuits
• Battery charging systems
• Industrial control equipment

Procurement Notes

Verify the specific suffix /45 against the manufacturer datasheet to confirm tube packaging details. Ensure the component meets RoHS directives and REACH SVHC requirements for your target market. Cross-reference the Mouser number 625-GBU4K-E3 or similar identifiers if sourcing from distributors, as suffix variations may indicate different packaging quantities rather than functional changes.

Selection Notes

Select this component when a 4 A continuous current rating and 800 V blocking voltage are required in a standard through-hole configuration. Compare the 150 A surge rating against potential inrush currents in the application. Consider the GBU package dimensions for PCB layout constraints and thermal management requirements relative to the expected ambient operating temperature.

Part Context

This part belongs to the Vishay GBU4 series of single-phase bridge rectifiers. The series offers various voltage ratings including 200 V, 400 V, 600 V, and 800 V options. The GBU4K variant specifically denotes the 800 V version within this family, sharing common mechanical and thermal characteristics with other members like the GBU4J (600 V) and GBU4M (1000 V).

Replacement Considerations

Direct substitutes include the GBU4K-E3/45, which shares identical electrical specifications and package type. Other Vishay variants within the GBU4 series with matching 800 V ratings can be considered if pinout compatibility is verified.