SI7942DP-T1-GE3 RF Transistor - Dual N-Channel MOSFET

SI7942DP-T1-GE3 Dual N-Channel MOSFET | 100V 3.8A for RF & High-Frequency Switching

The SI7942DP-T1-GE3 is an original dual N-channel MOSFET designed for RF amplifier circuits, high-speed switching, and power-management designs. The compact surface-mount SO8 package integrates two channels rated at 100V Vdss / 3.8A continuous current (5.9A pulsed), with 49mΩ RDS(on) at Vgs=10V for low conduction losses. A logic-level gate threshold (Vgs(th) 2-4V) makes it compatible with low-voltage control circuits.

This part is the workhorse choice when a design needs two clean, well-matched N-channel switches in a single footprint — synchronous half-bridges, push-pull stages, motor drivers, and RF power-management blocks. Operating from -55°C to +150°C, it is suitable for industrial, automotive-adjacent, and consumer-electronics duty.

High-Speed SI7942DP-T1-GE3 MOSFET — Low RDS(on) & Logic-Level Gate

• High-frequency performance — optimised for RF circuits and switching applications up to 100V/3.8A.
• Low power loss — 49mΩ RDS(on) reduces heat generation and improves energy efficiency.
• Logic-level gate — compatible with low-voltage control circuits (Vgs(th) 2V-4V).
• Robust design — operates from -55°C to +150°C for reliability across environments.
• Surface-mount SO8 package — easy automated PCB assembly in compact layouts.

Typical Use Cases for the SI7942DP

The dual-channel SO8 form factor is a common choice for synchronous DC-DC converters and half-bridge drivers, where matched MOSFETs in a tight thermal footprint produce clean switching waveforms at high frequencies. The SI7942DP also fits cleanly into RF power-management blocks and audio-class amplifier output stages where low Qg (24nC) keeps drive losses manageable. Its 1.4W power dissipation envelope sets the operating ceiling on continuous-duty designs.

SI7942DP-T1-GE3 MOSFET Specifications

Related products

• IXFP4N85X 850V N-Channel MOSFET (Mining PSU)
• AONS32311 N-Channel Power MOSFET
• NTMFS5C430NL N-Channel Power MOSFET
• NCEP60T18 60V N-Channel MOSFET

Need SI7942DP in tray quantities for production runs? Email contact@lys-sz.com for bulk pricing and lead times. Worldwide shipping from our Shenzhen warehouse.