GBU8G-E3/45

Overview

The GBU8G-E3/45 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features an average forward rectified current of 8 A and a peak repetitive reverse voltage of 400 V. The device utilizes a glass-passivated junction construction for enhanced stability. Electrical characteristics include a maximum non-repetitive peak forward surge current of 200 A at 60 Hz, a typical reverse leakage current of 5 µA at rated voltage, and a maximum RMS isolation voltage of 4000 V. The component operates within a temperature range of -55°C to +150°C and is housed in a GBU through-hole package.

Feature Summary

• Glass passivated junction construction ensures high reliability and stable performance under varying thermal conditions.
• High surge current capability allows the device to withstand transient overloads during power-up or fault conditions.
• Low reverse leakage current minimizes power loss and heat generation when the device is in the off state.

Applications

• AC-DC converter circuits in general-purpose power supplies
• Battery charging systems requiring robust rectification
• Inverter input stages for motor control applications

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm compliance with RoHS directives and REACH SVHC requirements. Confirm that the GBU package dimensions match the target PCB footprint. Check for recent Product Change Notifications (PCNs) regarding manufacturing location changes or material updates before finalizing procurement plans.

Selection Notes

Select this component when a through-hole solution is required for 8 A rectification at 400 V blocking voltage. Ensure the application environment stays within the specified -55°C to +150°C operating temperature range. Verify that the PCB layout supports the GBU package spacing and that thermal management strategies account for the forward voltage drop at full load.

Part Context

This part belongs to the GBU8 series of single-phase bridge rectifiers from Vishay. The series offers various voltage ratings while maintaining a consistent 8 A current capacity and GBU package form factor. This standardization simplifies inventory management for designs requiring different voltage levels but identical current handling and physical mounting constraints.

Replacement Considerations

Direct replacements must match the 8 A current rating, 400 V reverse voltage, and GBU through-hole package. Verify that alternative manufacturers offer equivalent glass-passivated junction technology and similar surge current capabilities to ensure circuit compatibility without redesigning the thermal or mechanical layout.

FAQ

What is the maximum RMS isolation voltage for the GBU8G-E3/45?

The maximum RMS isolation voltage is 4000 V, providing electrical isolation between the AC input and DC output terminals.

How does the glass passivation affect the device's performance?

Glass passivation protects the silicon junction from external contaminants and moisture, enhancing long-term reliability and ensuring stable reverse leakage current characteristics over the operating temperature range.

What is the typical reverse recovery time for this bridge rectifier?

The typical reverse recovery time is 75 ns, which is suitable for standard frequency AC-DC conversion applications.