GBU4M-M3/51

Overview

The GBU4M-M3/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It utilizes glass passivation for the silicon chips and is housed in a GBU plastic package designed for printed circuit board mounting. The device features an average forward rectified current of 4 A and a maximum repetitive peak reverse voltage of 1000 V. Key electrical characteristics include a non-repetitive peak forward surge current of 150 A, a maximum reverse current of 5 µA, and a typical forward voltage drop of 1.1 V. The component supports a maximum junction temperature of 150 °C and operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Glass passivation provides high reliability and stability under various operating conditions.
• High surge current capability ensures robustness against transient overloads.
• High case dielectric strength offers enhanced isolation and safety.
• Epoxy material meets UL-94V-0 flammability ratings for safety compliance.

Applications

• General purpose rectification in power supply circuits
• Printed circuit board mounted AC-to-DC conversion
• Industrial equipment requiring high surge tolerance

Procurement Notes

Verify the specific ordering suffix /51 to confirm the tape-and-reel packaging configuration, as this affects handling and assembly processes. Ensure that the M3 suffix is present to guarantee lead-free composition and RoHS compliance. Cross-reference the manufacturer part number with official Vishay documentation to confirm current production status and availability before finalizing procurement plans.

Selection Notes

Select the GBU4M-M3/51 when a 1000 V blocking voltage and 4 A continuous current are required in a through-hole GBU package. Consider the 150 A surge rating for applications with significant inrush currents. Verify thermal management requirements given the 150 °C junction limit. Compare against lower voltage variants if system requirements allow for reduced voltage headroom.

Part Context

This component belongs to the GBU series of single-phase bridge rectifiers from Vishay. The series is characterized by glass-passivated silicon chips and epoxy packages meeting UL-94V-0 standards. The GBU4M variant specifically denotes the 1000 V rating within the family, which also includes lower voltage options like GBU4A (50 V) and GBU4K (1000 V). The M3 suffix indicates lead-free termination and environmental compliance.

Replacement Considerations

Direct substitutes include other Vishay GBU4M variants with different packaging suffixes, such as GBU4M-E3/51 or GBU4M-E3/45, provided the package type matches the design. External replacements must match the 4 A current, 1000 V voltage, and GBU footprint. Verify pinout compatibility and thermal characteristics before substitution.

FAQ

What is the maximum repetitive peak reverse voltage for the GBU4M-M3/51?

The maximum repetitive peak reverse voltage (VRRM) is 1000 V.

Does the GBU4M-M3/51 meet RoHS standards?

Yes, the M3 suffix indicates that the component is lead-free and compliant with RoHS directives.

What is the typical forward voltage drop at rated current?

The typical forward voltage drop (VF) is 1.1 V at the rated average forward current.