PCB Blogger-China PCB Factory,HOYOGO

The PCB is made of different components and various complicated process technologies. The PCB structure has a single-layer, double-layer and multi-layer structure. Different layer structures have different manufacturing methods.     First, the printed circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, filling, electrical boundaries, etc. The main functions of each part are as follows:   Pad: It is used to weld metal holes of component pins.   Via Holes: It is used to connect metal holes of component pins between layers.   Mounting Hole: It is used to fix the printed circuit boards.   Wire: It is used to connect the electrical network copper film of component pins.   Connector: It is used for components connected between circuit boards.   Filling: It is used for copper plating of the ground wire network, which can effectively reduce the impedance.   Electrical boundary: It is used to determine the size of the circuit board, and all components

The circuit board made of by a layer of copper foil circuits stacked on top of each other. The connection between different circuit layers depends on the PCB drill hole. Because in the manufacture of circuit boards, drilling holes are used to communicate with different circuit layers. The purpose is to conduct electricity, so they are called PCB plating through holes. In order to conduct electricity, a layer of conductive material (usually copper) must be plated on the surface of the drilled hole, so that the electrons can move between different copper foil layers. In general, there are three types of PCB drilling, which are described as follows:   Plating Through Hole, referred to as PTH This is the most common type of PCB plating through hole. As long as the circuit board is kept under the light, the hole where you an see the bright light is the via hole. This is also the simplest type of PCB plating through hole, because when making a circuit board, you only need to dri