2012-11-09
Etching process of the outer circuit of PCBs
Currently, thetypical process of the printed circuit board (PCB) processing uses a patternplating method. I.e. first on the board outer copper foil portion to beretained, which is the graphical portion of the circuit, on pre-plating layerof tin-lead resist layer, and then chemically etched away the rest of thecopper foil, called etching.