GBU4M-M3/45

Overview

The GBU4M-M3/45 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an average forward rectified current of 4 A and a maximum repetitive peak reverse voltage of 1000 V. The device utilizes glass passivation for junction protection and is housed in a GBU surface-mount package with solder pin termination. Key electrical parameters include a maximum RMS diode current of 4 A, a peak forward surge current rating of 150 A, and a maximum non-repetitive peak forward surge current of 200 A. The component operates within a temperature range of -55°C to +150°C junction temperature.

Feature Summary

• Glass passivated junctions provide mechanical stress resistance and enhanced reliability under varying thermal conditions.
• Surface mount GBU package design facilitates automated assembly and efficient PCB space utilization.
• High surge current capability ensures robust performance during transient overload events.

Applications

• AC-DC power supply circuits requiring high voltage isolation
• Battery charging systems with peak reverse voltage demands up to 1000 V
• Industrial motor drive rectification stages

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm exact packaging configuration and compliance status. Ensure the ordering part number matches the required RoHS directive version and terminal finish specifications before finalizing procurement orders.

Selection Notes

Select this component when circuit designs require a 1000 V blocking voltage with a 4 A continuous current rating in a surface mount format. Confirm that the GBU footprint dimensions align with the target PCB layout constraints and thermal management requirements.

Part Context

This part belongs to the GBU series of bridge rectifiers, which are designed for general-purpose power conversion applications. The M3 suffix typically indicates lead-free composition and RoHS compliance, distinguishing it from older tin-lead variants within the same electrical specification family.

Replacement Considerations

Direct substitutes must match the 4 A current rating, 1000 V reverse voltage, and GBU package outline. Verify equivalent thermal characteristics and forward voltage drop profiles to ensure circuit compatibility without redesigning the heat dissipation infrastructure.

FAQ

What is the maximum operating junction temperature for the GBU4M-M3/45?

The maximum operating junction temperature is +150°C.

Does the GBU4M-M3/45 use glass passivation?

Yes, the device features glass passivated junctions for improved durability.

What is the peak forward surge current rating?

The peak non-repetitive forward surge current (at 8.3 ms single half-sine-wave) is rated at 200 A.