GBU8B-M3/45

Overview

The GBU8B-M3/45 is a single-phase bridge rectifier manufactured by Vishay Semiconductors. It features an 8 A average forward rectified current rating and a maximum repetitive peak reverse voltage of 100 V. The device utilizes glass passivation for junction protection and is housed in a GBU (D2PAK) through-hole package with solder pin termination. Key electrical characteristics include a maximum non-repetitive peak surge current of 300 A at 60 Hz and a maximum DC blocking voltage of 100 V. The component operates within a temperature range from -55 °C to +150 °C junction temperature.

Feature Summary

• Glass passivated junctions provide enhanced durability and long-term reliability under various operating conditions.
• High surge current capability allows the device to withstand transient overloads during power-up or fault events.
• Through-hole mounting configuration facilitates integration into standard printed circuit board assemblies.

Applications

• AC to DC conversion in general-purpose power supply circuits
• Bridge full-wave rectification in battery charging systems
• DC output stages in industrial control equipment

Procurement Notes

Verify the specific suffix /45 against the manufacturer's official datasheet to confirm tube packaging details. Ensure that the RoHS compliance status matches the current production version, as manufacturing updates may alter environmental declarations. Cross-reference the Mouser number 78-GBU8B-M345 with the distributor's latest inventory data to confirm availability before finalizing procurement plans.

Selection Notes

Select this component when a 100 V reverse voltage rating is required for 8 A applications. The GBU package offers a compact footprint suitable for space-constrained designs. Verify that the thermal management strategy supports the specified junction temperature limits. Consider the surge current rating relative to the expected inrush currents in the target application circuit.

Part Context

This part belongs to the Vishay GBU series of single-phase bridge rectifiers. The series provides various voltage ratings while maintaining consistent current handling capabilities. The GBU8B variant specifically targets low-voltage, high-current applications requiring robust junction protection. The M3 designation indicates lead-free construction compliant with international environmental standards.

Replacement Considerations

Direct replacements must match the 8 A current rating and 100 V reverse voltage specification. Compatible alternatives include other GBU-series bridges from Vishay or equivalent packages from manufacturers like Littelfuse or Diodes Inc. Ensure the replacement maintains the same pinout configuration and thermal dissipation characteristics.