What this 40 V N-channel MOSFET delivers
The Infineon IRFSL7430PBF is a 40 V N-channel MOSFET in the D2PAK (TO-263) surface-mount package, part of the HEXFET® and StrongIRFET™ series. It switches up to 195 A continuous drain current with a maximum on-resistance of 1.2 mOhm at 100 A, 10 V gate drive — a combination that keeps conduction losses low in high-current power paths like motor drives, DC-DC converters, and battery management systems. Gate charge is 460 nC at 10 V, which sets the gate-driver current requirement and switching loss budget. The junction temperature range spans -55 to 175 °C, so the part handles thermal cycling in industrial or automotive under-hood environments without derating surprises.
The 375 W power dissipation rating assumes an infinite heatsink; real-world dissipation depends on PCB copper and airflow. The 175 °C junction maximum is the hard limit.
The part is RoHS compliant per the lead-free finish (PBF suffix).