SI4933DY-T1-GE3

Overview

The SI4933DY-T1-GE3 is a dual P-channel MOSFET array manufactured by Vishay Siliconix, utilizing TrenchFET technology. It features an 8-SOIC surface-mount package with a maximum drain-source voltage (Vdss) of 12V and a continuous drain current (Id) of 7.4A at 25°C. The device exhibits a maximum on-resistance (Rds(on)) of 14 milliohms at Vgs = 4.5V and Id = 9.8A. Key electrical characteristics include a gate charge (Qg) of 70nC at 4.5V and a threshold voltage (Vgs(th)) of 1V at Id = 500µA. Power dissipation is rated at 1.1W, with an operating temperature range from -55°C to +150°C junction temperature.

Feature Summary

• Dual P-channel configuration in a single 8-SOIC package for space-efficient circuit design
• TrenchFET technology providing low on-resistance for improved power efficiency
• Logic-level gate drive capability suitable for direct interface with standard logic outputs

Applications

• Low-side switching applications in portable battery-powered devices
• Power management circuits requiring compact dual-channel solutions
• Load switch implementations in consumer electronics

Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm RoHS compliance status and check for end-of-life notices, as this specific part number may be subject to obsolescence. Ensure packaging matches requirements, typically supplied in tape and reel format for automated assembly processes.

Selection Notes

Select this component when a dual P-channel solution is required within a limited footprint. Evaluate thermal performance against the 1.1W power dissipation limit under expected load conditions. Verify that the 12V voltage rating and 7.4A current capacity align with system specifications before integration into the design.

Part Context

This component belongs to the SI4933 series of dual MOSFET arrays from Vishay Siliconix. It is designed to replace discrete P-channel MOSFETs where board space is constrained. The part integrates two matched transistors to ensure consistent performance characteristics between channels, simplifying layout and improving reliability in balanced bridge or high-current switching topologies.

Replacement Considerations

Check for alternative dual P-channel MOSFETs in SOIC-8 packages with similar voltage and current ratings. Verify pin compatibility and thermal resistance values before substitution. Consult manufacturer datasheets for updated equivalents if this part is discontinued.