The SPP20N65C3 is a MOSFET transistor manufactured by Infineon. It is a N-channel MOSFET, with the maximum drain voltage rated at 650V. The maximum current it can handle is 20.7A, with an on-state resistance of 0.08 ohms. This transistor is packaged in an TO220-3, which is one of the standard packages for power transistors. The CoolMOS C3 technology that Infineon has used for this particular component is their highest specifications for Power MOSFETs, offering improved switching and low-power performance with minimum losses. The component is also ideal for use in applications such as SMPS, battery management, and electric motor drives.