KBU4A-E4/51

Overview

The KBU4A-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes the KBU through-hole package and features four pins for circuit integration. The component supports a peak repetitive reverse voltage (Vrrm) of 50 V and an average forward rectified current (If) of 4 A per leg. It withstands a peak non-repetitive forward surge current (Ifsm) of 200 A. The device operates within a junction temperature range of -50°C to +150°C, with a maximum forward voltage drop of 1 V and a reverse leakage current of 5 μA.

Feature Summary

• Robust construction designed for high surge current handling capabilities in power supply applications.
• Utilizes plastic encapsulation for mechanical stability and environmental protection.
• Features low forward voltage characteristics to minimize conduction losses during operation.

Applications

• AC-DC power supply circuits
• Battery charging systems
• General-purpose rectification

Procurement Notes

Verify the specific suffix E4/51 against official Vishay documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure the ordering quantity matches distributor minimums. Cross-reference the manufacturer part number with authorized channel data sheets to validate compliance with RoHS directives before finalizing procurement orders.

Selection Notes

Select this component when a 50 V rating and 4 A continuous current are required in a compact KBU footprint. Verify that the 200 A surge capability meets transient requirements. Confirm thermal management strategies align with the 150°C maximum junction temperature limit under expected load conditions.

Part Context

This part belongs to the KBU4 series of single-phase bridge rectifiers from Vishay. The series offers various voltage ratings while maintaining consistent physical dimensions and electrical characteristics such as forward voltage and surge current capacity across different models.

Replacement Considerations

Direct replacements include other Vishay KBU4 variants with matching 50 V ratings, such as KBU4B or KBU4D, provided voltage tolerances allow. Alternative manufacturers offering identical KBU packages and 4 A / 50 V specifications may be considered if pinout compatibility is verified.