Gate charge and switching budget
The IRF1405ZPBF: Total gate charge is 180 nC at 10 V, with an input capacitance of 4780 pF at 25 V drain bias. The gate threshold voltage is 4 V maximum at 250 µA drain current, so a 10 V drive rail is recommended to achieve the specified Rds(on); the device is rated for a maximum gate-source voltage of ±20 V.
Thermal and mechanical fit
The TO-220AB package (3-lead through-hole) mates with standard TO-220 heatsinks and PCB layouts — the tab is the drain, so the thermal pad is electrically live and must be isolated or shared with the drain node.