You know what? In PCB proofing, what are the components of a small circuit board? How is the circuit board maintained?

1. Circuit board composition

Circuit board is mainly composed of welding pad, through hole, installation hole, wire, components, connector, filling, electrical boundary and so on.

The main functions of each component are as follows:

Solder pad: metal hole used to weld component pins.

Through hole: there are metal through hole and non-metal through hole, in which metal through hole is used to connect the pins of components between each layer.

Mounting hole: used for fixing circuit board.

Conductor: electrical network copper film used to connect pins of components.

Connector: a component used to connect circuit boards.

Filling: copper coating for ground wire network, which can effectively reduce the impedance.

Electrical boundary: used to determine the size of the circuit board, all components on the circuit board must not exceed this boundary.