PCB

gned but then allow fully automated assembly processes that were not possible or practical before. They are therefore faster to manufacture, cheaper and potentially more reliable. Much of the electronics industry's PCB design, assembly, and quality control uses standards published by the IPC organization. When the board has only copper connections and no embedded components it is more correctly called a printed wiring board (PWB) or etched wiring board. Although more accurate, the term printed wiring board has fallen into disuse. A PCB populated with electronic components is called a printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). The IPC preferred term for assembled boards is circuit card assembly (CCA), for assembled backplanes it is backplane assemblies. The term PCB is used informally both for bare and assembled boards.