KBU4J-E4/51

Overview

The KBU4J-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features a peak repetitive reverse voltage (Vrrm) of 600 V and an average forward rectified current (If) of 4 A. The device supports a peak non-repetitive forward surge current (Ifsm) of 200 A with a maximum forward voltage drop (Vf) of 1 V at rated current. Operating within a junction temperature range of -50°C to +150°C, it utilizes the KBU through-hole package with four pins. Key electrical characteristics include a maximum reverse leakage current of 5 μA.

Feature Summary

• Robust construction designed for high surge current handling capabilities in power supply applications.

Applications

• General purpose AC to DC conversion circuits
• Power supply units requiring isolated DC output
• Battery charging systems

Procurement Notes

Verify the specific suffix E4/51 against official Vishay documentation to confirm RoHS compliance and tape-and-reel packaging specifications. Ensure that the 600 V rating aligns with the circuit requirements before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when a 600 V blocking voltage and 4 A continuous current are required in a compact through-hole format. Compare thermal resistance values against available heatsinking options to ensure operation remains within the 150°C junction limit under expected load conditions.

Part Context

This component belongs to the KBU4 series of bridge rectifiers from Vishay. The series offers various voltage ratings including 100 V, 400 V, 800 V, and 1000 V variants sharing the same physical KBU footprint. The J suffix typically denotes the 600 V voltage class within this standardized product family.

Replacement Considerations

Direct replacements must match the 4 A current rating, 600 V reverse voltage, and KBU package dimensions. Verify pinout compatibility and thermal performance characteristics before substituting with components from other manufacturers.