The Infineon IRL2203NSTRLPBF is a HEXFET series N-channel power MOSFET in a TO-263-3 (D2PAK) surface-mount package. The gate threshold is specified at a maximum of 3 V at 250 µA, so it responds to logic-level drive signals.
The IRL2203NSTRLPBF carries an official obsolete product status. For a board that came in with a dead short on the drain — and you trace it to this FET — the replacement hunt starts with surplus or broker stock. The D2PAK footprint is common, so a pin-compatible alternative from the same or another vendor is the practical path for a repair or a BOM line that needs filling.
Gate charge and switching — what the numbers mean
The maximum gate charge is 60 nC at 4.5 V, and the input capacitance (Ciss) is 3290 pF at 25 V drain-source.
