KBU4A-M3/A

Overview

The KBU4A-M3/A is a single-phase standard bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an average rectified current (Io) of 4 A and a maximum repetitive peak reverse voltage (Vrrm) of 50 V. The forward voltage (Vf) is specified at 980 mV when conducting 4 A, with a maximum reverse leakage current of 10 µA at the rated voltage. The device operates within a junction temperature range of -50°C to +150°C and utilizes a KBU through-hole package.

Feature Summary

• Single-phase bridge rectifier configuration for AC-to-DC conversion
• Lead-free construction compliant with RoHS directives
• Isolated case connection for mounting flexibility

Applications

• General-purpose power supply circuits
• Battery charging systems
• Low-voltage DC power adapters

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm lead-free status and packaging details. Ensure the ordering part number matches the required electrical ratings and thermal characteristics for the target application environment.

Selection Notes

Select this component for applications requiring 4 A continuous current and 50 V blocking voltage in a through-hole format. Verify that the 980 mV forward voltage drop aligns with system efficiency requirements and that the KBU package dimensions fit the PCB layout constraints.

Part Context

This component belongs to the KBU series of bridge rectifiers from Vishay. The M3 suffix indicates a lead-free terminal finish and compliance with RoHS standards. The KBU series provides a robust solution for general-purpose rectification in compact through-hole designs.

Replacement Considerations

KBU4A-M3/P is documented as a parameter-equivalent alternative from the same manufacturer.