On-resistance and gate drive — what 75 mOhm at 10 V means
The SPD30P06PGBTMA1: Maximum Rds(on) is 75 mOhm at 21.5 A drain current with 10 V gate drive. The 125 W power dissipation rating at case temperature gives headroom, but the PCB copper area under the tab sets the real thermal limit. Gate charge is 48 nC at 10 V. A 10 V gate driver delivering 1 A can switch the FET in roughly 48 ns, though the actual switching loss depends on the gate drive circuit impedance and the Miller plateau. The ±20 V maximum gate-source rating allows direct drive from a 12 V automotive rail without a series zener.
Temperature range and automotive qualification
Operating junction temperature range is -55°C to 175°C, covering under-hood and engine-bay environments. AEC-Q101 qualification means the part has passed the full suite of automotive stress tests. The PG-TO252-3 package is the Infineon lead-free DPak variant, ROHS3 compliant.