PWM Mosfet (and help identifying the right one)
For 99% efficiency choose Ron &lt;= 12 mOhm = 1% of 12V/10A=1.2Ohm with logic level gate drive of 3.3V.

With millions of FET choices this usually means Vt (=Vgs(th)) is ~ &lt;=1/3 of Vg=3.3 or Vt&lt; 1.1V to start looking from with a filter range.