KBU4K-M3/P

Overview

The KBU4K-M3/P is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a peak repetitive reverse voltage of 800 V and an average forward rectified current of 200 A. The device utilizes the KBU package for through-hole mounting and operates within a junction temperature range of -50 °C to +150 °C. This component is designed for high-current power supply applications requiring robust thermal performance and reliable rectification in industrial environments.

Feature Summary

• High current handling capability with 200 A average forward rectified current rating
• Robust voltage blocking with 800 V peak repetitive reverse voltage
• Extended thermal operating range supporting junction temperatures up to 150 °C
• Through-hole mounting configuration in the KBU package for secure PCB attachment

Applications

• Industrial power supplies requiring high current rectification
• DC power distribution systems
• Welding equipment power stages

Procurement Notes

Verify the specific suffix P against official Vishay documentation to confirm packaging details, as standard variants may differ. Ensure the ordering part number matches the exact electrical specifications required for the target circuit design before procurement.

Selection Notes

Select this component when high current capacity and 800 V blocking voltage are required in a through-hole format. Compare thermal resistance values against system heat dissipation capabilities to ensure reliable operation under maximum load conditions without exceeding junction temperature limits.

Part Context

This part belongs to the KBU series of bridge rectifiers from Vishay, designed for general-purpose high-current applications. The M3 suffix indicates lead-free termination compliant with RoHS directives, while the P suffix typically denotes specific tape-and-reel or bulk packaging variations defined by the manufacturer.

Replacement Considerations

Direct substitutes must match the 200 A current rating, 800 V voltage rating, and KBU package dimensions. Verify pinout compatibility and thermal characteristics before replacing to ensure equivalent performance in the existing circuit layout.