GBU4A

Overview

The onsemi GBU4A is a single-phase bridge rectifier designed for general-purpose applications. It features a peak repetitive reverse voltage (Vrrm) of 50 V and an average forward rectified current (If) of 4 A. The device utilizes a silicon diode construction within a GBU surface-mount package, offering four isolated pins for through-hole mounting. Key electrical characteristics include a maximum non-repetitive peak forward surge current (Ifsm) of 150 A and a peak forward voltage (Vf) of 1 V at rated current. The component operates reliably across a junction temperature range from -55°C to +150°C.

Feature Summary

• Single-phase bridge configuration with four internal elements
• Isolated case connection for thermal management
• Silicon-based diode technology for standard rectification

Applications

• General-purpose power supply circuits
• Low-voltage AC to DC conversion systems
• Industrial control power modules

Procurement Notes

Verify the specific suffix and marking code against the manufacturer's latest datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may vary by region and production batch.

Selection Notes

Select this component when a low-voltage, high-current density solution in a compact GBU package is required. Ensure the circuit's peak inverse voltage does not exceed 50 V and that thermal dissipation allows operation within the specified -55°C to +150°C junction temperature range under expected load conditions.

Part Context

The GBU4A belongs to the GBU series of bridge rectifiers from onsemi, characterized by its robust surface-mount footprint and high surge current capability. This series is engineered for reliable performance in space-constrained designs requiring efficient AC-to-DC conversion with minimal voltage drop across the rectifying elements.

Replacement Considerations

Direct substitutes must match the 4 A current rating, 50 V reverse voltage, and GBU package dimensions. Verify pinout compatibility and thermal resistance values before implementation.