Onsemi FDD4243 P-Channel MOSFET 40V 14A 0.044Ω DPAK

The Onsemi FDD4243 P-Channel MOSFET is a 40V, 14A surface-mount power transistor supplied in a TO-252 (DPAK) package.

Overview

The FDD4243 is a P-channel power MOSFET built using Advanced PowerTrench technology. Its low drain-source on-state resistance (RDS(ON)) of 0.044 Ohms is intended to reduce conduction losses, supporting efficient operation and cooler running in medium-power designs. With a continuous drain current rating of 14A and a drain-source voltage of 40V, it is suited to a range of power management applications where minimal power loss is important.

Key Features

• P-Channel enhancement mode construction
• Drain-source voltage (Vds) of 40 Volts
• Continuous drain current (Id) of 14 Amps
• RDS(ON) of 0.044 Ohms (tested at Vgs=20V)
• Gate-source threshold voltage (Max) of 1.6 Volts
• Maximum power dissipation of 42 Watts
• Maximum operating temperature of +150°C
• Moisture Sensitivity Level (MSL) 1 - Unlimited

Package and Dimensions

The surface-mount TO-252 (DPAK) package has three pins and offers a balance of power handling and board space efficiency. Its industry-standard DPAK footprint is intended to suit existing PCB layouts and automated assembly processes. Dimensions (width x depth x height) are 3.3 x 1.5 x 4.3, with a product weight of 0.3 g.

Applications

The FDD4243 is suited to switching power supplies, motor control circuits, battery protection systems, load switching, power distribution, and DC-DC converter designs. Choose the Onsemi FDD4243 P-Channel MOSFET for a 40V, 14A P-channel solution in a compact DPAK package.