The IRF9133 is a P-Channel HEXFET power MOSFET from International Rectifier, rated for 80 V drain-source breakdown and 10 A continuous drain current. That 88 W power dissipation ceiling tells you this is a TO-220-class device sized for medium-current high-side switching in automotive and industrial loads — think reverse-battery protection, load switches, and motor-bridge high-side legs where an N-Channel would need a charge pump.
Through-hole mounting — rework and thermal reality
Through-hole mounting means the tab solders into a plated through-hole on the board, giving a direct thermal path to the copper plane. Rework is straightforward with a soldering iron — no hot-air profile needed — but the lead bend and hole diameter must match the BOM footprint.
