2N4856JAN01 is an NPN Darlington transistor manufactured by Vishay. It has a maximum collector-emitter voltage of 75V and a collector current of 5A. It is housed in a TO-218 package and has a 2W power dissipation rating. The transistor offers high switching speeds, low saturation voltage and high beta. The part is ideal for heavy-duty applications such as power switching, motor control and general purpose switching, and can be used in a variety of circuits such as drivers, amplifiers and oscillators.