The PTW28N50 with TO-3P-3 MOSFET is a surface mount power metal-oxide-semiconductor field-effect transistor (MOSFET) designed for use in power switching applications. This MOSFET is manufactured by PIP (Precision Instrument Corporation) and is RoHS-compliant. It is ideal for fast switching and energy efficient power supply designs, and has a very low on-resistance of 28 mOhms at 8.8 VGS. The gate threshold voltage is +2.5V, and the maximum drain-source voltage is 500V. This transistor also features a maximum drain current of 50A, a maximum power dissipation of 206W, and a maximum operating temperature of +175°C.