The composition structure of the circuit board The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, fillings, electrical boundaries, etc. The main functions of each component are as follows:
Pads: Metal holes used for soldering the pins of components.
Via: There are metal vias and non-metal vias. Among them, the metal vias are used to connect the pins of components between different layers.
Installation holes: Used for fixing the circuit board.
Wiring: An electrical network copper film used to connect the pins of components.
Connector: A component used for connecting between circuit boards.
Filling: The copper plating used for the ground network can effectively reduce the impedance.
Electrical boundary: This is used to determine the size of the circuit board. All components on the circuit board must not exceed this boundary.