KBU8B-M3/A

Overview

The KBU8B-M3/A is a single-phase bridge rectifier from Vishay General Semiconductor - Diodes Division, designed for general-purpose applications. It features an average forward rectified current of 8 A and a maximum repetitive peak reverse voltage of 100 V. The device utilizes glass passivation for junction protection and operates within a temperature range of -55°C to +150°C. Key electrical parameters include a maximum non-repetitive peak forward surge current of 300 A at 60 Hz and a typical forward voltage drop of 1.1 V at 8 A. The component is housed in a KBU plastic package with isolated case construction, suitable for through-hole mounting.

Feature Summary

• Glass passivated junctions provide reliable protection against voltage transients
• Isolated case construction allows for direct heat sinking without electrical insulation requirements
• High surge current capability supports robust performance during transient load conditions

Applications

• AC-DC power supply circuits
• Battery chargers
• General purpose rectification in low to medium power electronics

Procurement Notes

Verify the specific suffix designation against official Vishay documentation to confirm package type and marking variations. Ensure that the procurement channel provides genuine components with traceable origin. Cross-reference the manufacturer part number with authorized distributor databases to confirm current availability status and lead times prior to finalizing orders.

Selection Notes

Select this component when a standard 8 A bridge rectifier with 100 V reverse voltage rating is required. Consider the KBU package dimensions for PCB layout constraints. Verify thermal management requirements based on the expected ambient temperature and forward current load to ensure operation remains within the specified junction temperature limits.

Part Context

This component belongs to the KBU series of bridge rectifiers manufactured by Vishay. The series offers various voltage ratings and current capacities within the same physical footprint. The KBU8B variant specifically denotes the 100 V rating within the 8 A current class, providing a standardized solution for compact power conversion designs requiring high reliability.

Replacement Considerations

Direct parameter-equivalent substitutes may include other manufacturers' 8 A, 100 V bridge rectifiers in the KBU or similar inline packages. Verify pinout compatibility and thermal characteristics before substitution. Consult Vishay's official replacement guide for confirmed cross-reference data.