the PCB. Graphics and text on a circuit board's PCB Gerber fisiere are usually printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are available: yellow, black, blue, red. Screen printing is used to render useful information on the PCB board that
and insulating layers. A basic printed circuit consists of a flat sheet of insulating material FR4, Rogers or Polyamide for flexible circuits, and a layer of copper foil, laminated to the substrate. fisiere Gerber Chemical etching divides the copper into separate conductive lines called tracks or circuit paths, pads for connections, metallized
of surface mount technology. "Through holes" components are assembled by fisiere Gerber their legs passing through the board and glued to the pads on the other side. "SMD" components are soldered on the same side of the board. A board can use both methods for soldering components. Today PCBs with components mounted