PCB copper laying is to fill the unused space on the PCB with solid copper. The significance of laying copper is to reduce the impedance of the ground wire, improve the anti-interference ability, and reduce the area of the loop. PCB design copper laying is a very important link in circuit board design.

Why should PCB lay copper?

1. EMC will play a shielding role for large-area ground or power supply copper laying, and some special places, such as PGND, will play a protective role.

2. PCB process requirements. Generally, in order to ensure the effect of electroplating or lamination without deformation, copper is laid on the PCB layer with less wiring.

3. Signal integrity requirements, give high-frequency digital signals a complete return path, and reduce the wiring of the DC network. Of course, there are also reasons for heat dissipation, special device installation requires copper laying, and so on.

What is the role of copper laying in PCB design?

1. Copper laying on PCB can improve the electrical conductivity of the circuit board. Since copper has good electrical conductivity, the use of copper foil for covering during the PCB manufacturing process can greatly improve the electrical conductivity of the board. In this way, the connection between various components can be guaranteed to be more stable and reliable.

2. PCB copper laying can also enhance the mechanical strength and stability of the printed circuit board. Because the copper foil itself has high mechanical strength and stability, it can effectively prevent the printed circuit board from being damaged or deformed by the external environment during use.

3. PCB copper laying can also protect the circuit board from oxidation or corrosion. Since copper foil has good corrosion resistance, coating a layer of copper foil on the surface of the circuit board can effectively protect the circuit board from oxidation or corrosion. In this way, the service life of the circuit board can be extended, and the stability and reliability of the circuit board during use can be guaranteed.

To sum up, PCB copper laying is a very important step in the printed circuit board manufacturing process.