What this 30 V N-channel does in the circuit
The IRFH5300TRPBF is an Infineon HEXFET N-channel MOSFET rated for 30 V drain-to-source and a continuous drain current of 40 A at 25 °C ambient (Ta) or 100 A at the case (Tc) — the 100 A figure assumes the exposed paddle is soldered to a large copper pour on the PCB.
The gate charge at 10 V is 120 nC, which is moderate for a 30 V part in this package; a gate driver with 2 A peak current will switch it in about 60 ns. The input capacitance at 15 V drain bias is 7200 pF, so the driver sees a capacitive load that rises with the Miller plateau. For the full 1.4 mOhm, use a 10 V gate rail.
Package and thermal — the exposed paddle matters
The 8-PowerVDFN (also called 8-PQFN 5x6) has an exposed paddle on the bottom. The power dissipation rating of 250 W at the case (Tc) is only reachable if that paddle is soldered to a thermal land with vias to an inner-layer copper plane. The ambient rating of 3.6 W (Ta) is what you get with minimal copper — the real number sits between, set by the board layout.
Sourcing — active production, no obsolescence worry
It is ROHS3 compliant.