PCB board is a circuit board made by electronic printing.It uses the insulation board as the substrate,selectively processes holes and arranges metal circuit graphics to replace the traditional electronic component chassis, realizes the interconnection between electronic components,and plays the role of relay transmission.
The main function of the PCB board is to provide support,fixation and connection functions for electronic components,and to connect electronic components with each other through different forms of circuits.The use of this circuit board makes the circuit more mini and intuitive,which plays an important role in the mass production of fixed circuits and the optimization of electrical layout.
PCB board can be divided into single panel,double panel and multi-layer board according to its structure.The single panel means that the parts are concentrated on one side,while the wires are concentrated on the other side;the double-sided plate has two layers of wires;the multi-layer plate contains more layers and requires an appropriate circuit connection between the two layers.The bridge between the circuits is called the guide hole.The wide application of PCB board covers many high-tech industries,such as telecommunications, power supply,computers,industrial control,digital products,scientific and educational instruments,medical equipment,automobiles,aerospace defense and so on.