GBU8G-M3/45

Overview

The GBU8G-M3/45 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features an 8 A average forward rectified current (Io) and a 400 V repetitive peak reverse voltage (VRRM). The device utilizes glass passivation for junction protection and is housed in a GBU-4 inline package designed for through-hole mounting. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 200 A at 60 Hz, a typical forward voltage drop of 1 V, and a maximum reverse leakage current of 5 µA. The component operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Glass passivated junctions provide stable performance and reliable operation under varying thermal conditions.
• High surge current capability supports robust handling of transient load events during power-up or fault conditions.
• Inline lead frame configuration facilitates automated insertion and efficient PCB assembly processes.

Applications

• AC-to-DC conversion circuits in general-purpose power supplies
• Bridge rectification stages in battery chargers and adapters
• Power conditioning modules in industrial control systems

Procurement Notes

Verify the specific suffix /45 against the manufacturer's latest documentation to confirm packaging details and compliance status. Ensure that the ordering quantity aligns with the standard tube packing configuration specified by Vishay. Cross-reference the full part number with authorized distributors to confirm current availability and production lifecycle status before finalizing procurement plans.

Selection Notes

Select this component when a through-hole solution is required for 8 A applications with 400 V blocking capability. The GBU package offers a compact footprint suitable for space-constrained designs while maintaining high thermal stability. Consider the 200 A surge rating for circuits experiencing significant inrush currents. Verify that the operating environment remains within the specified -55 °C to +150 °C range for optimal reliability.

Part Context

This part belongs to the GBU8 series of single-phase bridge rectifiers from Vishay. The series provides various voltage ratings to suit different AC line requirements while maintaining consistent current handling and package dimensions. The GBU8G variant specifically addresses applications requiring 400 V isolation. The M3 suffix indicates halogen-free and RoHS-compliant construction, aligning with modern environmental standards for electronic components.

Replacement Considerations

Direct replacements must match the 8 A current rating, 400 V voltage rating, and GBU-4 package outline. Verify pinout compatibility and thermal characteristics. Alternative parts from other manufacturers should be evaluated for equivalent surge current capacity and forward voltage drop to ensure circuit performance parity without redesign.