W04G

Overview

The W04G is a single-phase bridge rectifier manufactured by onsemi. It utilizes silicon technology and features four internal elements configured for full-wave rectification. The device supports a maximum average forward rectified current of 2.0 A and offers a repetitive peak reverse voltage rating of 400 V. It operates within a junction temperature range from -65 °C to +150 °C. The component is housed in the WOG case style, designed for printed circuit board mounting.

Feature Summary

• Glass passivated junctions provide stability against mechanical stress and improve long-term reliability under varying thermal conditions.
• High surge current capability allows the device to withstand transient overcurrent events during power-up or fault conditions.
• Low typical reverse leakage current minimizes power loss and heat generation when the diode is in the blocking state.

Applications

• Printed circuit board mounted AC-DC conversion circuits
• General-purpose power supply rectification stages
• Battery charging systems requiring 400V isolation

Procurement Notes

Verify the manufacturer designation on the datasheet, as Vishay is the primary producer of the W04G series. Confirm RoHS compliance status through official documentation, as some variants may not meet current environmental directives. Ensure the package type matches the WOG specification for proper PCB footprint compatibility.

Selection Notes

Select this component for applications requiring a compact bridge rectifier with a 400V reverse voltage rating. Verify that the required forward current does not exceed 2.0 A under the expected operating ambient temperature. Check thermal management requirements, as the plastic epoxy package relies on PCB copper area for heat dissipation.

Part Context

The W04G belongs to the W0xG family of glass-passivated bridge rectifiers. This series includes variations with different voltage ratings such as 50V, 100V, 200V, 600V, 800V, and 1000V. All members share the same physical WOG package dimensions and general electrical characteristics, differing primarily in their peak reverse voltage capabilities.

Replacement Considerations

Direct substitutes include other W04G units from Vishay General Semiconductor. Equivalent parts from other manufacturers must match the 2A current rating, 400V reverse voltage, and WOG package outline to ensure mechanical fit.