Definition

A Printed Circuit Board (PCB) is a laminated structure of conductive copper layers separated by insulating dielectric material. PCBs mechanically support components and provide electrical connections through etched copper traces, drilled holes (vias), and surface-mount pads. PCBs range from single-sided to 50+ layers, using various technologies including HDI, flex, rigid-flex, and embedded components. The term PWB (Printed Wiring Board) is sometimes used interchangeably.