2 mOhm at 75 A — the conduction loss floor for a 40 V rail
The IRF2804STRLPBF: The headline figure is the 2 mOhm maximum on-resistance at Vgs = 10 V and Id = 75 A — that is the conduction loss floor for a synchronous rectifier or low-side switch on a 12 V or 24 V bus.
175 °C junction — the temperature margin for tight enclosures
That 175 °C ceiling is 25 °C above the typical 150 °C max for many 40 V trench parts, giving real headroom in high-ambient environments like under-hood automotive, industrial motor drives, or sealed power supplies where the case runs hot. The 300 W power dissipation at case temperature Tc is a theoretical max; real-world dissipation is set by the board's copper area under the D2PAK tab and the airflow.
D2PAK — the drain tab is the thermal path
The TO-263-3 / D2PAK package has the drain electrically and thermally connected to the large metal tab. The 6450 pF input capacitance at 25 V Vds means the gate driver sees a moderate capacitive load; the rise time at 10 V drive is dominated by the driver's peak current capability.
ROHS3 compliance is confirmed.