GBU803

Overview

The GBU803 is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, designed for general-purpose applications. It features an average forward rectified current of 8A and a maximum repetitive peak reverse voltage of 300V. The device utilizes glass passivation for junction protection and is housed in a KBU-4 package suitable for through-hole mounting. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 200A at 60Hz, a typical reverse current of less than 0.1μA, and a maximum operating junction temperature of 150°C.

Feature Summary

• Glass passivated junctions provide high reliability and resistance to soldering heat during processing.
• High case dielectric strength ensures robust insulation performance under operational stress.
• Compliant with RoHS Directive 2011/65/EU and WEEE 2002/96/EC standards.

Applications

• Printed circuit board mounted power supply circuits
• General purpose AC to DC conversion
• Battery charging systems

Procurement Notes

Verify the specific suffix or variant code when ordering, as manufacturers often use suffixes to denote packaging type (e.g., tube vs. reel) or specific testing criteria. Confirm that the component meets all necessary regulatory compliance requirements for your target market before finalizing procurement plans.

Selection Notes

Select this component based on its 8A current rating and 300V voltage capability. Ensure the thermal management design accommodates the specified maximum operating temperature of 150°C. Verify that the KBU-4 package dimensions fit the intended PCB layout constraints.

Part Context

This part belongs to the GBU series of single-phase bridge rectifiers from Taiwan Semiconductor. The series covers a range of voltages from 50V to 1000V while maintaining a consistent 8A current rating. The GBU803 specifically addresses applications requiring moderate voltage blocking capabilities within this standardized form factor.

Replacement Considerations

Direct replacements must match the 8A current rating, 300V reverse voltage, and KBU-4 package outline. Verify pinout compatibility and ensure equivalent thermal and electrical specifications from alternative manufacturers.