The circuit board is mainly composed of pads, holes, mounting holes, conductors, components, connectors, fillers, electrical boundaries and so on, the main functions of each component are as follows:
Welding PLATE: A metal hole used to weld the pin of a component.
Perforation: There are metal holes and non-metallic holes, wherein the metal perforation is used to connect the components between the layers of the pins.
Mounting hole: Used to secure the circuit board.
Wire: An electrical network copper film used to connect components to pins.
Connectors: Components used to connect between circuit boards.
Fill: Copper applied to the ground network can effectively reduce the impedance. Electrical boundary: Used to determine the size of the circuit board, none of the components on the circuit board can exceed that boundary.