KBU8B-E4/51

Overview

The KBU8B-E4/51 is a single-phase bridge rectifier from Vishay's KUB8 series, housed in an isolated KBU through-hole package. It features a maximum repetitive peak reverse voltage (Vrrm) of 100 V and an average forward rectified current (If) of 8 A. The device supports a peak non-repetitive forward surge current (Ifsm) of 300 A at 60 Hz. Electrical characteristics include a maximum peak forward voltage (Vf) of 1 V and a maximum peak reverse current (Ir) of 10 µA. It operates within a junction temperature range of -50°C to +150°C.

Feature Summary

• Utilizes glass passivation for reliable operation across wide temperature ranges
• Features an isolated mounting base for simplified heat sink integration
• Constructed with plastic molding compound rated UL Flammability Classification 94V-0

Applications

• AC-to-DC power supply circuits
• Battery charging systems
• General-purpose rectification in industrial equipment

Procurement Notes

Verify the specific suffix against official datasheets to confirm electrical ratings and compliance status. Confirm that the component matches the required voltage and current specifications for the target application before procurement.

Selection Notes

Select this component when a 100 V rating and 8 A continuous current are required in a KBU footprint. Ensure thermal management accounts for the 150°C maximum junction temperature limit during high-load operations.

Part Context

This part belongs to the KUB8 series of Vishay bridge rectifiers. The series offers various voltage ratings while maintaining consistent mechanical dimensions and pin configurations for design flexibility.

Replacement Considerations

Cross-reference with other Vishay KBU8 variants or equivalent industry-standard bridge rectifiers sharing the KBU package and matching 100 V / 8 A specifications.