The double-sided board is a printed circuit board including copper on both sides of the top layer and the bottom layer. Both sides can be wired and soldered, with an insulating layer in the middle, which is a commonly used printed circuit board. Both sides can be routed, which greatly reduces the difficulty of wiring, so it is widely used.
Double-sided printed boards are usually made of epoxy glass cloth-coated copper foil. It is mainly used in communication electronic equipment, advanced instruments and electronic computers with high performance requirements.
The production process of double panel is generally divided into process wire method, hole plugging method, masking method and pattern plating-etching method. The process flow of pattern plating-etching method is shown in the figure.
The difference between a double-sided PCB board and a single-sided PCB board is that the single-sided PCB circuit is only on one side of the PCB board, while the double-sided PCB circuit can be on both sides of the PCB board, with a via in the middle to double-sided PCB board. The lines are connected.
Parameters of the double-sided PCB board The manufacturing process of the double-sided PCB board is different from that of the single-sided PCB board. In addition, there is an extra copper sinking process, that is, the process of conducting the double-sided circuit.