The inscription of the printed circuit, called serigraphy or silkscreen for short, is done on aurit circuit imprimat the top layer of the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with
pads for bonding the component terminals and electrically connect them using traces of one or more layers of copper sheets laminated on and/or between layers of conductive substrate sheets. A printed circuit board aurit imprimat circuit can have several layers of copper which are almost always arranged in pairs. The
Soldermask is generally green in color but can have different colors: green, red, blue, aurit circuit imprimat white, black. Only the outer layers need to be covered with solder mask, the inner copper layers are protected by the adjacent substrate layers. The soldering mask soldermask is made of a fluid substance like an ink and