KBU1004G

Overview

The KBU1004G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor, designed for through-hole mounting in the KBU-4 package. It features a maximum average forward rectified current of 10 A and a repetitive peak reverse voltage of 400 V. The device exhibits a typical forward voltage drop of 1.1 V at rated current and supports a maximum non-repetitive peak forward surge current of 200 A. Electrical characteristics include a maximum reverse leakage current of 5 uA. The component operates within a temperature range from -55°C to +150°C junction temperature. Physical dimensions are approximately 23.7 mm in length, 7.1 mm in width, and 19.3 mm in height.

Feature Summary

• Glass passivated junction construction for enhanced reliability
• High case dielectric strength suitable for demanding environments
• Compliant with RoHS Directive 2011/65/EU and WEEE standards

Applications

• General purpose AC to DC power supply rectification
• Printed circuit board mounting in industrial equipment
• Battery charging circuits requiring high surge capability

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm halogen-free status and packaging configuration. Ensure compatibility with existing thermal management designs given the 150°C maximum operating temperature rating. Confirm that the KBU-4 through-hole footprint matches the target PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a 10 A current rating and 400 V blocking voltage are required in a standard bridge rectifier form factor. Consider the 200 A surge current capability for applications with high inrush currents. Verify that the through-hole mounting style aligns with the assembly process requirements compared to surface mount alternatives.

Part Context

This part belongs to the KBU100 series of bridge rectifiers from Taiwan Semiconductor. The series offers various voltage ratings while maintaining consistent mechanical dimensions and current handling capabilities. The KBU1004G specifically addresses applications requiring 400 V reverse voltage tolerance within the standardized KBU plastic encapsulated case.

Replacement Considerations

Direct replacements must match the 10 A current rating, 400 V reverse voltage, and KBU-4 package outline. Verify equivalent forward voltage and surge current specifications to ensure circuit performance remains unchanged during substitution.