KBU8K-M3/A

Overview

The KBU8K-M3/A is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an average rectified output current of 8 A and a maximum repetitive peak reverse voltage of 800 V. The device utilizes glass passivation for junction protection and is housed in a KBU-4 through-hole package. Key electrical parameters include a forward voltage of approximately 1 V at the rated current, a non-repetitive peak forward surge current capability of 300 A, and a low reverse leakage current of 10 µA at the rated voltage. The component operates within a junction temperature range of -50°C to +150°C.

Feature Summary

• Glass passivated junctions provide reliable operation under high thermal stress conditions.
• High surge current capability supports robust performance during transient load events.
• Low forward voltage drop contributes to improved energy efficiency and reduced heat generation.

Applications

• AC/DC power supply circuits
• Battery chargers
• General-purpose rectification in industrial equipment

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm compliance with RoHS directives and material categorization standards. Ensure that the ordering code matches the required packaging format, as variations exist between bulk and tube configurations. Cross-reference the manufacturer part number with authorized distributor databases to confirm current availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring 8 A continuous current handling with high voltage isolation up to 800 V. The KBU through-hole package is suitable for applications needing mechanical stability and ease of manual or automated assembly. Consider the thermal management requirements based on the specified operating temperature range and forward voltage characteristics.

Part Context

This component belongs to the KBU series of single-phase bridge rectifiers from Vishay. The series is characterized by its compact inline package design and high current density capabilities. The KBU8K variant specifically addresses applications demanding higher voltage ratings compared to lower-voltage counterparts within the same physical footprint family.

Replacement Considerations

The KBU8K-M3/P is documented as a parameter-equivalent alternative from the same manufacturer. Verify pinout compatibility and thermal specifications before substitution.