GBU8K-3E3/51

Overview

The GBU8K-3E3/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes glass passivated junction cells and is housed in a plastic GBU package with four pins. The device supports a peak average forward current of 8 A and withstands a repetitive peak reverse voltage of 800 V. It features a maximum non-repetitive peak forward surge current of 200 A at 60 Hz. The component operates within a temperature range from -55 °C to +150 °C, with a typical forward voltage drop of 1 V and a reverse leakage current of 5 µA.

Feature Summary

• Glass passivated junction cells provide high reliability and resistance to environmental variations.
• Plastic case offers corrosion resistance and meets UL flammability standards.
• High surge current capability ensures robust performance during transient load conditions.

Applications

• AC-to-DC power supply circuits
• Battery chargers
• General-purpose rectification in industrial equipment

Procurement Notes

Verify the exact part number against official Vishay documentation, as suffixes like E3 indicate lead-free status. Confirm package type and pin configuration match design requirements. Check for RoHS compliance declarations. Ensure thermal management aligns with specified operating temperatures. Validate supplier authenticity through authorized channels.

Selection Notes

Select this component when an 8 A continuous current rating and 800 V blocking voltage are required. Consider the GBU package dimensions for PCB layout constraints. Evaluate thermal dissipation needs based on ambient temperature and forward voltage characteristics. Compare alternative voltages or currents if system demands differ.

Part Context

This part belongs to the Vishay GBU8 series of single-phase bridge rectifiers. The series includes variants with different voltage ratings such as 50 V, 100 V, 400 V, 600 V, and 1000 V, all sharing the same 8 A current rating and GBU package form factor. The K suffix specifically denotes the 800 V rating.

Replacement Considerations

Direct substitutes include other Vishay GBU8 series parts with identical current ratings but different voltage ratings, such as GBU8J-E3/51 (600 V) or GBU8M-E3/51 (1000 V), provided the voltage margin is sufficient. Cross-brand replacements must match the 8 A current, 800 V minimum reverse voltage, GBU package, and pinout configuration.