GBLA04-E3/51

Overview

The GBLA04-E3/51 is a glass passivated single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an in-line circuit configuration within a GBL plastic case, rated for a maximum repetitive peak reverse voltage of 400 V and a maximum average forward rectified output current of 4.0 A at 50 °C. The device exhibits a typical instantaneous forward voltage drop of 1.0 V at 4.0 A and a maximum DC reverse current of 5 μA at 25 °C. It supports a peak forward surge current of 120 A and operates within a junction temperature range of -55 to +150 °C.

Feature Summary

• Glass passivated chip junctions provide high reliability and stability under varying thermal conditions.
• High surge current capability ensures robust performance during transient load events.
• Molding compound meets UL 94 V-0 flammability rating for enhanced safety compliance.

Applications

• AC/DC bridge full wave rectification in switching power supplies
• Power conversion circuits in home appliances
• Rectification stages in monitor and TV power adapters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package quantity and delivery mode. Confirm RoHS compliance status and material categorization definitions via the provided Vishay documentation links before finalizing procurement specifications.

Selection Notes

Select this component based on the required 400 V reverse voltage rating and 4 A continuous current capacity. Ensure the application environment allows for adequate heat dissipation to maintain the junction temperature within the specified -55 to +150 °C operating range.

Part Context

This part belongs to the GBLAxx series of single-phase bridge rectifiers from Vishay. The datasheet explicitly identifies this series as End of Life, recommending the GBL04E series as the designated alternative device for new designs requiring similar electrical characteristics.

Replacement Considerations

The official alternative devices listed are GBL005E, GBL01E, GBL02E, GBL04E, GBL06E, GBL08E, and GBL10E. Verify pinout compatibility and thermal resistance parameters when transitioning to the recommended replacement series.

FAQ

What is the maximum non-repetitive peak forward surge current?

The maximum non-repetitive peak forward surge current (IFSM) is 120 A for a single sine-wave superimposed on rated load with a duration less than 8.3 ms.

How is polarity indicated on the component?

Polarity is marked directly on the body of the case, with the positive lead identified by a beveled corner on the package.

What is the typical thermal resistance from junction to ambient?

The typical thermal resistance RθJA is 47 °C/W when the unit is mounted on a PCB with 0.375-inch lead length and 0.5 x 0.5 inch copper pads.