IRF3205N-channel power MOSFET

IRF3205 is a 55 V N-channel power MOSFET. Its insulated gate controls the drain-source channel, and its 8 mΩ maximum on-resistance is specified with 10 V gate drive. The 2–4 V threshold only marks the start of conduction at 250 µA; it is not a full-on logic-drive specification. IRF3205PbF uses a through-hole TO-220 package. The separately documented IRF3205SPbF uses D2PAK surface mounting. Both use gate 1, drain 2 and source 3, with the metal tab or thermal pad connected to drain. Their physical views and PCB patterns follow the selected package. A modest 12 V resistor-load example separates the gate-driver and load paths. The headline 110 A is a calculated silicon limit; the manufacturer explicitly limits the package to 75 A. Safe operating area, hot resistance and switching loss still constrain the usable current.