The SI4936ADY-T1-E3 is a bipolar NPN/N-Channel logic level enhancement-mode power MOSFET transistor manufactured by Vishay. It offers a maximum drain source voltage of 40V, a maximum drain current of 180 mA, maximum total power dissipation of 500 mW, and a maximum drain-source on-resistance of 6.6 O. The device has a TO-92 package, low input capacitance, and low gate input resistance. It can be used in a wide range of applications such as in battery-operated electronics, general-purpose switching, and load switching circuits.