KBU4K-M3/A

Overview

The KBU4K-M3/A is a single-phase standard bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an average rectified output current of 4 A and a maximum repetitive peak reverse voltage of 1000 V. The device utilizes the KBU through-hole package with four pins. Key electrical parameters include a forward voltage of 1.15 V at 4 A and a reverse leakage current of 5 µA at 1000 V. It supports a junction temperature range from -50°C to 150°C and has a non-repetitive peak forward surge current rating of 200 A.

Feature Summary

• High voltage capability suitable for demanding power supply applications
• Robust thermal performance with high junction temperature tolerance
• Lead-free construction compliant with RoHS directives

Applications

• General purpose AC-DC power supplies
• Battery chargers
• Adapters and converters

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm lead-free status and packaging details. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the ordering part number matches the required voltage and current ratings for the target application design.

Selection Notes

Select this component when a 1000 V rating is required for single-phase rectification in through-hole designs. Compare the 4 A continuous current rating against the circuit's load requirements. Consider the KBU package dimensions for PCB layout constraints and thermal management needs relative to similar Vishay series options.

Part Context

This component belongs to the KBU series of bridge rectifiers, designed for general-purpose applications. The M3 suffix indicates a lead-free terminal finish, aligning with environmental compliance standards. It serves as a robust solution for converting AC input to DC output in various electronic equipment requiring moderate current and high voltage isolation.

Replacement Considerations

The KBU4K-M3/P is listed as a parameter-equivalent alternative within the same manufacturer line. Verify pinout compatibility and thermal characteristics before substitution. Other manufacturers offering KBU-style packages with matching 4 A and 1000 V ratings may serve as functional replacements if datasheet parameters align.