GBU8K-M3/45

Overview

The GBU8K-M3/45 is a single-phase glass passivated bridge rectifier manufactured by Vishay Semiconductors. It features an average forward rectified current of 8 A and a maximum repetitive peak reverse voltage of 800 V. The device utilizes a GBU through-hole package with solder pin termination, measuring 22.3 mm in length, 18.8 mm in height, and 3.56 mm in width. Key electrical characteristics include a maximum forward voltage drop of 1 V at rated current, a peak non-repetitive forward surge current of 200 A, and a maximum reverse leakage current of 5 µA. It operates within a junction temperature range of -55 °C to +150 °C.

Feature Summary

• Glass passivation provides mechanical strength and meets UL flammability classification 94V-0 for flame retardancy.
• Molded plastic case offers corrosion resistance and high mechanical shock immunity.
• Low profile design facilitates automated assembly processes.

Applications

• AC to DC power supply circuits
• Battery chargers
• Adapters and converters

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm compliance status and packaging details. Ensure the ordering part number matches the required voltage rating and package type. Cross-reference manufacturer datasheets for any updates on lead times or end-of-life notices before finalizing procurement plans.

Selection Notes

Select this component when an 8 A current rating and 800 V blocking voltage are required in a standard GBU footprint. Consider the thermal management capabilities and the 200 A surge rating for applications involving high inrush currents. Verify that the through-hole mounting style aligns with the target PCB layout constraints.

Part Context

This component belongs to the GBU8 series of single-phase bridge rectifiers from Vishay. The series includes variants with different voltage ratings such as GBU8D (200 V), GBU8G (400 V), and GBU8M (1000 V). All share the same physical dimensions and general electrical characteristics, differing primarily in their peak reverse voltage specifications.

Replacement Considerations

Direct substitutes within the same family include GBU8K-E3/45. Other manufacturers offering equivalent 8 A, 800 V GBU packages should be evaluated for pin compatibility and thermal performance metrics.