KBU810G

Overview

The Lumimax Optoelectronic Technology KBU810G is a single-phase glass passivated bridge rectifier designed for printed circuit board mounting. It features a molded plastic KBU case with UL 94V-0 flame retardant epoxy and solderable terminals compliant with MIL-STD-202, method 208. The device supports a maximum repetitive peak reverse voltage of 1000 V and a maximum average forward rectified current of 8.0 A at 100°C case temperature. It withstands a peak forward surge current of 300 A under an 8.3 ms half-sine-wave condition. The component operates within a junction and storage temperature range of -50 to +150°C, with a typical junction capacitance of 250 pF per diode measured at 1.0 MHz.

Feature Summary

• Glass passivated chip construction for enhanced reliability
• High surge current capability for robust performance
• Low forward voltage drop for improved efficiency

Applications

• Printed circuit board rectification
• General-purpose power supply circuits
• AC to DC conversion in industrial equipment

Procurement Notes

Verify the manufacturer part number against official Lumimax documentation to ensure authenticity. Confirm that the ordering suffix matches the required voltage rating, as the KBU8 series spans multiple voltage options. Check for updated revision numbers, as specifications are subject to change without notice. Ensure compatibility with standard KBU footprint requirements during procurement planning.

Selection Notes

Select the KBU810G when a 1000 V reverse voltage rating is required alongside an 8 A continuous current capacity. Consider the KBU package dimensions for PCB layout constraints. Derate the forward current by 20% if the application involves capacitive loads. Verify thermal management capabilities to maintain the case temperature within the specified 100°C limit for full current rating.

Part Context

The KBU810G belongs to the KBU8 series of glass passivated bridge rectifiers from Lumimax Optoelectronic Technology. This series covers a voltage range from 50 V to 1000 V, sharing common mechanical and electrical characteristics such as the KBU package and 8.0 A current rating. The '10' suffix indicates the specific 1000 V variant within this standardized product line.

Replacement Considerations

Cross-reference with other manufacturers offering KBU-style bridge rectifiers rated for 1000 V and 8 A. Verify pinout polarity markings and physical dimensions match the existing PCB design. Ensure equivalent surge current ratings and thermal characteristics are met before substitution.