What materials are used in PCB fabrication?

PCB fabrication Printed circuit boards (PCBs) are built using layers of dielectric and conductive materials. The layers are bonded together under viable pressure to form a stable substrate, called the core. Different types of cores are used depending on the application. The substrate is usually made of a fiberglass-reinforced epoxy, or some other laminate material. Copper foil is then deposited o...