The Infineon BSC090N03LSGATMA1 is an N-channel enhancement-mode MOSFET from the OptiMOS™ family, rated for 30 V drain-source breakdown and packaged in a PG-TDSON-8-5 (8-PowerTDFN) surface-mount footprint. It targets low-voltage DC-DC converters, load switches, and battery protection circuits where conduction loss and board area are the primary constraints. The headline on-resistance is 9 mOhm maximum at 10 V gate drive with 30 A drain current — that is the figure that sets the I²R loss in a synchronous rectifier or high-current OR-ing diode replacement. At 48 A continuous drain current (Tc), the silicon itself can carry the load, but the 2.5 W at ambient vs 32 W at case tells you the board copper and any heatsink define the real thermal limit. Gate charge of 18 nC at 10 V is specified. Input capacitance of 1500 pF at 15 V Vds is moderate — the switching node capacitance is not a dominant loss term at these frequencies.
ROHS3 compliant.