KBU2508

Overview

The Good-Ark Semiconductor KBU2508 is a single-phase bridge rectifier designed for general-purpose applications. It features an average rectified output current of 25 A at a case temperature of 115°C and supports a repetitive peak reverse voltage of 800 V. The device exhibits a maximum instantaneous forward voltage drop of 1.1 V per diode and a maximum DC reverse current of 5 µA at rated blocking voltage. It offers a high surge non-repetitive forward current capability of 400 A under standard half-sine wave conditions. The component utilizes a KBU through-hole package with tin-plated leads, ensuring solderability in compliance with J-STD-002 standards.

Feature Summary

• High surge current capability suitable for demanding power applications
• Molded plastic compound meets UL 94 V-0 flammability rating
• Tin-plated leads ensure reliable solderability per industry standards

Applications

• Printed circuit board mounting for AC-to-DC conversion
• General-purpose power supply rectification
• Industrial equipment requiring robust bridge rectification

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact packaging and marking variations. Confirm RoHS compliance status and lead time requirements directly with authorized distributors or the manufacturer prior to procurement. Ensure storage conditions adhere to specified limits to maintain component integrity before assembly.

Selection Notes

Select the KBU2508 when an 800 V reverse voltage rating and 25 A continuous current capacity are required. Consider the thermal resistance characteristics and heatsinking requirements for operation above ambient temperatures. Compare the forward voltage drop and surge current ratings against alternative bridge rectifiers to ensure compatibility with the target circuit design and efficiency goals.

Part Context

The KBU2508 belongs to the KBU25xx series of glass passivated bridge rectifiers from Good-Ark Semiconductor. This series covers reverse voltages ranging from 50 V to 1000 V while maintaining a consistent 25 A output current rating. The KBU package provides a standardized form factor for through-hole mounting, facilitating integration into various industrial and consumer electronic designs requiring reliable single-phase rectification.

Replacement Considerations

Compatible substitutes include other KBU2508 variants from different manufacturers offering identical 25 A/800 V specifications. Verify pinout compatibility and thermal resistance values when cross-referencing with equivalent parts from other suppliers to ensure seamless replacement without circuit modification.