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Printed circuit board (PCB) is also known as print wiring board (PWB). The common material used in fabricating PCB is FR-4. Virtually, PCB can be found in all electronic devices. In fact, all of the electronic components are somehow connected or populated on a PCB.


One can find Printed Circuit Board (PCB) virtually in all electronic devices. It is a very important component. All kinds of active and passive components are using PCB as a carrier and utilize the traces made from copper foil to convey electric current. Printed circuit board base on material been used has different grade given. FR-4 is the most common material we can find on the market. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).