Circuit board mainly by the pads, vias, mounting holes, wires, components, connectors, filling, electrical Boundaries and other components, the main functions of the components are as Follows:
Pad: a metal hole used to weld the pin of a component.
Vias: Metal vias and Non-metallic vias, where the metal vias are used to connect the component pins between the Layers.
Mounting holes: for securing the circuit Board.
Wire: the electrical Network copper film used to connect the pin of the Component.
Connector: a component for connecting between BOARDS.
Filling: used for grounding network of copper, can effectively reduce the impedance.
Electrical boundary: used to determine the size of the board, all components on the board must not exceed the Boundary.
