GBU8A

Overview

The onsemi GBU8A is a single-phase silicon bridge rectifier designed for general-purpose power supply applications. It features an average forward rectified current (Io) of 8 A and a maximum repetitive peak reverse voltage (Vrrm) of 400 V. The device utilizes a glass-passivated junction structure to ensure high reliability under harsh conditions. Key electrical parameters include a maximum non-repetitive peak forward surge current (Ifsm) of 200 A at 60 Hz, a maximum DC blocking leakage current (Ir) of 5 µA at rated voltage, and a maximum RMS isolation voltage of 4000 Vrms. The component operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Glass passivation provides protection against mechanical stress and ensures long-term stability in demanding environments.
• High surge current capability allows the device to withstand transient overloads during startup or fault conditions.
• Low forward voltage drop contributes to improved system efficiency and reduced thermal management requirements.

Applications

• General-purpose AC/DC power supplies
• Battery chargers
• Adapters and converters

Procurement Notes

Verify the specific ordering suffix to confirm the exact voltage rating, as the base part number may correspond to different variants. Confirm RoHS compliance status and packaging type directly with the manufacturer or authorized distributor before finalizing procurement plans.

Selection Notes

Select this component when a robust 8 A rectification solution with 400 V reverse voltage blocking is required. Ensure the application's thermal environment remains within the specified -55°C to +150°C junction temperature limits to maintain device integrity and performance.

Part Context

This component belongs to the GBU series of bridge rectifiers from onsemi. The series is characterized by its through-hole GBU package, which facilitates easy mounting on printed circuit boards. It serves as a standard solution for medium-power rectification tasks in industrial and consumer electronics.

Replacement Considerations

Direct replacements must match the 8 A current rating, 400 V reverse voltage, and GBU package footprint. Verify pinout compatibility and thermal characteristics before substituting with components from other manufacturers.