What this part is and where it fits
The Texas Instruments CSD18510KTTT is a 40 V N-channel NexFET power MOSFET in a DDPAK/TO-263-3 surface-mount package. It delivers a continuous drain current of 274 A at case temperature, with a maximum Rds(on) of 2.6 mOhm at 10 V gate drive. This combination of low on-resistance and high current capability makes it suited for high-efficiency power switching in motor drives, DC-DC converters, and battery protection circuits. The -55°C to 175°C junction temperature range supports deployment in automotive under-hood and industrial environments where thermal cycling is a factor.
Key ratings and what they mean for the BOM
The 40 V drain-source voltage (Vdss) sets the maximum bus voltage this MOSFET can block. Gate charge (Qg) of 132 nC at 10 V means the gate driver must supply this charge each switching cycle.
Package and mounting
The DDPAK/TO-263-3 (D²Pak) is a surface-mount package with a large exposed drain tab for heat sinking. The tab is electrically connected to the drain, so the PCB copper pour must be sized for both thermal dissipation and electrical clearance. The three-lead plus tab footprint is standard for high-current TO-263 devices; verify the land pattern matches the supplier device package (DDPAK/TO-263-3) before layout.
Lifecycle and sourcing
It is ROHS3 compliant.