KBU1004-G

Overview

The KBU1004-G is a bridge rectifier manufactured by Comchip Technology, designed for general-purpose power supply applications. It features a single-phase configuration with four internal silicon elements housed in a bulky case package. The device supports a maximum average forward rectified current of 10 Amperes and offers a repetitive peak reverse voltage rating of 400 Volts. Key electrical parameters include a maximum non-repetitive peak forward surge current of 250 Amperes at 8.3 milliseconds. The component operates within a junction temperature range of -55°C to +150°C and maintains a low forward voltage drop.

Feature Summary

• Utilizes glass passivation for the junction to ensure stability and reliability under various operating conditions.
• Constructed with high purity silicon materials to optimize performance characteristics.
• Features a bulky case design that facilitates efficient heat dissipation during operation.

Applications

• General purpose full-wave bridge rectification in AC-DC power supplies
• Battery charging circuits requiring robust surge handling
• Polarity protection in DC power input stages

Procurement Notes

Verify compliance with RoHS directives as product markings may vary. Confirm the specific suffix indicates lead-free composition if required by assembly standards. Cross-reference datasheet thermal resistance values against system cooling requirements to ensure safe operating temperatures are maintained during continuous load cycles.

Selection Notes

Select this component when a 10A current capacity and 400V reverse voltage blocking capability are required in a through-hole mounting format. Ensure the application does not exceed the 250A surge rating. Consider thermal management strategies given the bulk packaging constraints compared to surface mount alternatives.

Part Context

This part belongs to the KBU series of bridge rectifiers from Comchip Technology. The series provides standardized solutions for medium-current rectification needs. The KBU1004-G specifically denotes the 400V voltage variant within this lineup, sharing mechanical dimensions with other voltage ratings in the same family.

Replacement Considerations

Equivalent parts include KBPC5010 or similar 10A/400V bridge rectifiers from other manufacturers. Verify pinout compatibility and thermal resistance specifications before substitution to ensure circuit integrity.