What are the layers of a circuit board used for? The most important layer in a PCB circuit board is the copper trace layer, which is how the PCB got its name. While a 2-layer PCB has two trace layers, a 4-layer PCB has four trace layers. These trace layers are used to connect to…
All electronic products use PCBs, and the market trend of PCBs is almost a weathervane for the electronics industry. With the development of high-end and miniaturized electronic products such as mobile phones, laptops and PDAs, the demand for flexible PCBs (FPCs) is increasing. PCB manufacturers are accelerating the development of thinner, lighter and denser FPCs….