The Tri-Gate design is considered 3D because the gate wraps around a raised source-to-drain channel, called a "fin," instead of residing on top of the channel in the traditional 2D planar design.

The exterior layers of the transistor are known as the "drain" and "source," with the central layer being referred to as the "gate". The function of the transistor is to utilize the voltage applied to ...

Since tubes and FETs are both voltage controllers, it is easy to think of the gate as the grid, the source as the cathode, and the drain as the plate. But, [Aaron] shows this isn’t really a very ...