KBU6A-E4/51

Overview

The KBU6A-E4/51 is a single-phase bridge rectifier manufactured by Vishay. It utilizes silicon diode elements housed in a plastic KBU case with four pins. The component supports an average forward rectified current of 6 A and offers a repetitive peak reverse voltage rating of 50 V. It features a maximum non-repetitive peak forward surge current of 250 A at 60 Hz for a half-sine duration of 8.3 ms. The device operates within a junction temperature range of -55 °C to +150 °C and complies with RoHS standards.

Feature Summary

• Isolated case construction for mounting flexibility
• High surge current capability for transient protection
• Lead-free finish compliant with international environmental directives

Applications

• AC-DC power supply circuits
• Battery charging systems
• General-purpose rectification in low-voltage electronics

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm material composition and compliance status. Ensure the ordering code matches the required voltage rating, as the KBU6 series spans multiple voltage options. Confirm package dimensions against the R-PSFM-W4 specification for PCB layout compatibility.

Selection Notes

Select this component when a 50 V reverse voltage rating is sufficient for the application. The 6 A continuous current rating suits moderate power requirements. Consider thermal management strategies given the plastic encapsulation and through-hole mounting style. Verify that the 250 A surge rating meets the circuit's inrush current demands.

Part Context

This part belongs to the Vishay KBU6 series of bridge rectifiers. The series shares the KBU plastic package but varies by voltage rating, indicated by the middle letter in the part number. The KBU6A specifically denotes the 50 V variant within this family of general-purpose silicon bridge rectifiers.

Replacement Considerations

Direct replacements must match the 6 A current, 50 V voltage, and KBU package. Other manufacturers offering equivalent specifications should be evaluated for pinout compatibility and thermal performance characteristics.