Plated Through Hole - Double-Sided PCB - Control Panel

The picture shows a FR4 double-sided Plated Through Hole circuit board. The main characteristic of this type of holes is that, during the manufacturing process, after drilling the boards a thin copper layer is plated onto the walls of the holes, providing them withelectrical conductivity. This way, after the PCB Assembly is finished, the link between the component's leads and the copper tracks has a lower resistance and better mechanical stability. Today most PCBs are double sided, this way the components can connect to the required layers in the board.