2.95 mOhm Rds(on) — the conduction loss floor
The IRFH8316TRPBF-IR is an Infineon HEXFET® N-channel power MOSFET rated for 30 V drain-source and 27 A switching current. For a 12 V bus load switch or a low-side synchronous rectifier, that on-resistance keeps the heatsink small or absent.
59 nC gate charge — what the driver sees
Gate charge totals 59 nC at 10 V Vgs. For a 100 kHz switching regulator, that translates to about 5.9 mA average gate drive current — easily handled by a standard MOSFET driver. The ±20 V Vgs rating gives headroom for gate-drive overshoot on a 12 V rail without avalanche stress on the oxide.
Junction temperature range and package
The 2.2 V maximum gate threshold at 50 µA drain current means the part turns on fully with 5 V logic, though the lowest Rds(on) requires the full 10 V drive.
