UG3KB40G

Bridge Rectifier Overview

The UG3KB40G is a single-phase, ultra-fast glass-passivated rectifier manufactured by SMC Diode Solutions. It features a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 3.0 A. The device utilizes a DO-201AD plastic package with an isolated case connection. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 125 A and a typical maximum instantaneous forward voltage drop of 1.3 V at 3.0 A. The component supports a wide operating junction temperature range from -55°C to +175°C.

Bridge Rectifier Feature Summary

• Glass passivated chip construction for enhanced reliability
• Ultra-fast switching capability designed for high efficiency
• Low reverse leakage current and low forward voltage drop

Bridge Rectifier Applications

• High frequency switching power supplies
• Free wheeling diodes in inductive circuits
• Polarity protection circuits

Bridge Rectifier Procurement Notes

Verify the specific suffix 'G' against the official manufacturer datasheet to confirm compliance with RoHS directives and lead-free status. Ensure the ordering information matches the DO-201AD package type and 400V rating. Confirm availability through authorized distributors as standard packaging quantities may vary.

Bridge Rectifier Selection Notes

Select this component for applications requiring fast recovery times and high thermal stability up to 175°C. The 3.0 A current rating and 400V blocking voltage suit general-purpose rectification. Compare the 1.3 V forward voltage drop against alternative Schottky or standard silicon diodes to optimize system efficiency and thermal management requirements.

Bridge Rectifier Part Context

This part belongs to the UG3 series of ultra-fast rectifiers produced by SMC Diode Solutions. The series offers various voltage ratings while maintaining consistent 3.0 A current handling capabilities. The UG3KB40G specifically addresses the need for robust, high-speed rectification in compact axial-leaded packages suitable for through-hole mounting on printed circuit boards.

Bridge Rectifier Replacement Considerations

Potential substitutes include other 400V, 3A ultra-fast rectifiers in the DO-201AD package. Verify that replacement parts match the 125 A surge current rating and 175°C junction temperature limit. Ensure the replacement maintains glass passivation for comparable reliability under harsh environmental conditions.