GBU4B-E3/51

Overview

The GBU4B-E3/51 is a single-phase rectifier bridge manufactured by Vishay General Semiconductor - Diodes Division. It features a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 4 A per leg. The device exhibits a maximum DC blocking leakage current of 5 µA at the rated voltage. Its peak forward voltage drop is specified at 1 V under standard test conditions. The component supports a non-repetitive peak surge current of 150 A and operates within a junction temperature range of -55°C to +150°C. It utilizes a GBU surface-mount package for PCB integration.

Feature Summary

• Single-phase full-wave rectification in a compact surface-mount footprint
• High thermal stability with extended operating junction temperature range
• Robust surge current handling capability for transient protection

Applications

• General-purpose AC-to-DC power supply circuits
• Battery charging systems requiring moderate current levels
• Industrial control equipment power stages

Procurement Notes

Verify the specific suffix /51 against official Vishay documentation to confirm tape-and-reel packaging specifications. Ensure the part number matches the exact electrical ratings required for your design, as Vishay offers multiple variants within the GBU series. Cross-reference the manufacturer's latest datasheet to confirm current production status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when a 400 V rating and 4 A continuous current are sufficient for the application. Consider the GBU package dimensions for board space constraints. Evaluate thermal management requirements based on the expected ambient temperature and heat dissipation capabilities of the PCB layout. Compare alternative packages if higher current density or different mounting styles are needed.

Part Context

This part belongs to Vishay's GBU series of single-phase rectifier bridges, designed for general-purpose applications. The E3 suffix indicates lead-free construction compliant with RoHS directives. The GBU series is widely used in consumer electronics and industrial applications due to its balance of performance, reliability, and cost-effectiveness in surface-mount configurations.

Replacement Considerations

Direct replacements include other Vishay GBU4B variants with different packaging suffixes, such as GBU4B-M3/51. Equivalent parts from other manufacturers must match the 400 V, 4 A, and GBU package specifications. Verify pinout compatibility and thermal characteristics before substitution.