board that can help users during assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the cablaje imprimate printed circuit and the possible problems that may appear may be slight discolorations due to the high temperatures for
them, i.e. the insulation. For a multilayer printed circuit with a specific stack-up, it must be taken into account that the internal tracks with controlled impedance are cablaje imprimate shielded by copper planes and for this reason only the thickness of the insulation between layers and tracks
flexible printed circuit made of a thin polyamide of 0.1-0.3 mm with a rigid printed circuit on an FR4 substrate. These printed circuits are used more and cablaje imprimate more lately, having the advantage of their flexibility. A PCB may have an inscription or screen printing that identifies components, test points or identification text. Screen