the gold and nickel plating. CAD Computer Aided Design. A computer based system to assist designers in the design, topological layout and drawing of an electronic component... Printed Wiring Board. The substrate, generally epoxy glass, used to provide component attachment lands and interconnections to form a functioning electronic circuit (also called a PCB... Slivers Thin pieces of metal from a machining process SMA Surface Mount Assembly. An electronic assembly or module that is manufactured with surface mounted components and suing surface...