PC-GK2.1/SMD is an ordinary printed circuit board (PCB) that is designed to mount surface mount components. It is composed of a rigid, multi-layered substrate made from fiberglass and coated with copper, and is designed to be resistant to corrosion, high temperatures, and electrical shorts. The board contains various conductive tracks and footprints, used to interconnect components. Its dimensions are 8.3 x 7.2 cm.