or more layers of copper sheets laminated on and/or between layers of conductive substrate sheets. pcb A printed circuit board can have several layers of copper which are almost always arranged in pairs. The number of layers and the designed interconnection between them (vias, PTHs) gives a general
is used to render useful information on the PCB board that can help users during pcb assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the printed circuit and the possible problems that may appear may be slight discolorations due
of the tracks and the distance between them, i.e. the insulation. For a multilayer printed circuit with a pcb specific stack-up, it must be taken into account that the internal tracks with controlled impedance are shielded by copper planes and for this reason only the thickness of the insulation between