KBU8K

Overview

The KBU8K is an 800V, 8A bridge rectifier manufactured by onsemi. It utilizes a plastic encapsulated module with a single-phase full-wave configuration. The device features a maximum average forward rectified current of 8A and a peak repetitive reverse voltage rating of 800V. Key electrical characteristics include a maximum RMS input voltage of 560V and a surge non-repetitive peak forward recovery impulse current capability of 200A. The unit operates within a junction temperature range of -40°C to +175°C and is designed for surface mount applications.

Feature Summary

• High voltage blocking capability suitable for demanding power supply environments
• Robust thermal performance supporting high-temperature operation up to 175°C
• Compact surface mount package design facilitating automated assembly

Applications

• General purpose AC-DC power supplies
• Battery chargers
• Inverter circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct pinout and packaging specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer before placing orders. Ensure storage conditions meet moisture sensitivity level requirements.

Selection Notes

Select this component when an 800V reverse voltage rating and 8A continuous current capacity are required in a surface mount form factor. Evaluate thermal management needs based on the specified junction-to-ambient thermal resistance. Compare alternative packages if PCB space constraints differ from the standard footprint dimensions provided in the datasheet.

Part Context

This part belongs to the KBU series of bridge rectifiers from onsemi, which offers various current ratings and voltage options. The KBU8K specifically addresses applications requiring moderate current handling at high voltages. It serves as a standard solution for converting alternating current to direct current in industrial and consumer electronics.

Replacement Considerations

Check for compatible parts such as the KBPC series or other 8A/800V bridge rectifiers from different manufacturers. Verify that substitute components match the physical footprint, pin configuration, and thermal characteristics to ensure seamless integration without redesigning the PCB.