Gate drive and switching — 35 nC total gate charge
Total gate charge is 35 nC at 10 V, so a 1 A gate driver charges the gate in about 35 ns — fast enough for hard-switched converters up to a few hundred kHz. The input capacitance is 2500 pF at 50 V drain, which is moderate for a 100 V device and keeps the driver current requirement manageable. The threshold voltage range is 3.5 V max at 45 µA drain current, and the recommended drive voltage is 6 V to 10 V for the lowest Rds(on). A 5 V logic-level gate drive will not fully enhance this part — plan for a 10 V rail or a gate-driver IC.
Package and thermal — TO-220 Full Pack, 33 W dissipation
The IPA126N10N3G comes in a TO-220-3 Full Pack (PG-TO220-3-111), which has a fully isolated metal tab — no insulating pad needed, but the thermal resistance is higher than a standard TO-220. The 33 W power dissipation limit at case temperature means a heatsink is required for any continuous current above about 10 A, depending on ambient and airflow.