GBU8K-3M3/51

Overview

The GBU8K-3M3/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes glass-passivated junction technology for high reliability and low leakage current. The component features an inline Single Inline Package (SIP) configuration designed for through-hole mounting. Key electrical specifications include a maximum average forward rectified current of 8 A and a repetitive peak reverse voltage of 800 V. The device supports a maximum non-repetitive peak forward surge current of 200 A at 8.3 ms half-sine wave. It operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Glass-passivated junction construction ensures high reliability and stability under varying thermal conditions.
• Inline SIP package design facilitates automated assembly and efficient PCB layout.
• High surge current capability provides robust protection against transient overloads.

Applications

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

Procurement Notes

Verify the exact part number suffix, as standard datasheets typically list GBU8K-M3/45 or GBU8K-E3/45. Confirm packaging type and RoHS compliance status with the supplier. Ensure the source document explicitly identifies the '3M3' suffix variant to avoid substitution errors with similar Vishay bridge rectifiers.

Selection Notes

Select this component when an 800 V rating and 8 A continuous current are required in a compact through-hole format. Compare forward voltage drop characteristics against alternative packages like KBU if space constraints differ. Verify thermal management requirements for the specific application environment.

Part Context

This component belongs to Vishay's GBU series of glass-passivated bridge rectifiers. The series offers various voltage ratings from 50 V to 1000 V while maintaining consistent 8 A current handling. The GBU8K variant specifically targets higher voltage applications requiring reliable isolation and surge tolerance.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include GBU8K-M3/P and GBU8K-E3/45 from Vishay. Cross-reference pinout compatibility and thermal resistance values before implementation.