KBP04M-M4/51

Overview

The KBP04M-M4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a peak repetitive reverse voltage of 400 V and an average forward rectified current of 1.5 A. The device utilizes a glass-passivated chip junction for enhanced reliability. It operates within a junction temperature range of -55°C to +150°C and exhibits a maximum non-repetitive peak surge current capability of 30 A at 8.3 ms single half-sine-wave. The component is housed in a KBPM package designed for through-hole mounting.

Feature Summary

• Glass-passivated chip junction construction ensures high reliability and stability under various operating conditions.
• High surge current capability allows the device to withstand transient overloads during power-up or fault events.
• Low forward voltage drop contributes to improved efficiency and reduced heat generation in rectification applications.

Applications

• General-purpose AC to DC conversion in power supply circuits
• Battery charging systems requiring robust rectification
• DC power supplies for industrial control equipment

Procurement Notes

Verify component authenticity through authorized distributors, as counterfeits exist. Confirm RoHS compliance status via official datasheets, noting that suffixes may indicate specific environmental certifications. Check for End-of-Life (EOL) notifications from Vishay, as this series may be discontinued or subject to product change notices affecting availability and specifications.

Selection Notes

Select this component when a 400 V reverse voltage rating and 1.5 A continuous current are required in a through-hole configuration. Ensure the PCB layout accommodates the KBPM package dimensions. Verify thermal management requirements based on the forward voltage drop and ambient operating temperature limits specified in the electrical characteristics table.

Part Context

This part belongs to the KBP series of bridge rectifiers from Vishay, which are widely used in general-purpose rectification tasks. The 'M' suffix typically denotes a specific voltage rating within the series, while 'M4' often indicates lead-free termination plating compliant with RoHS directives. The KBPM package provides a compact solution for medium-power applications compared to larger axial or modular bridges.

Replacement Considerations

Direct replacements must match the 400 V / 1.5 A specification and KBPM package. Equivalent parts from other manufacturers should be verified for identical pinout, forward voltage characteristics, and thermal performance. Always consult the latest manufacturer datasheets to ensure functional compatibility before substitution.