What Is Copper-Clad Steel?

The so-called copper cladding is to use the idle space on the PCB as a reference plane and then fill it with solid copper. These copper areas are also called copper filling. The significance of copper clad is to reduce the impedance of the ground wire and improve the anti-interference ability; reduce the voltage drop and improve the efficiency of the power supply; and connect to the ground wire to reduce the loop area.