In the PCB circuit board industry, the electroplating method is used to plate a layer of copper on the entire circuit board surface and hole wall. The purpose is to increase the thickness of the circuit board manufacturer's board surface and hole wall copper layer to meet customer requirements. .
Figure electricity is to transfer the PCB circuit board to electroplating on the outer layer, and the electroplating is followed by secondary copper plating, the purpose of which is to increase the thickness of the outer layer circuit. The copper surface to which the outer dry film is attached cannot be plated with copper or tin; the exposed copper surface.
(The non-photosensitive dry film area where the outer developing line is dissolved by the developing solution) can be plated with secondary copper or tin.
The purpose of tin plating is to protect the copper surface under the tin surface from being bitten off by the etching solution in the next process.
In the production and manufacture of circuit boards, there are two different processes, positive film and negative film. The negative plate is electroplated after sinking copper. The function of the plate electric is mainly to increase the thickness of the copper on the inner wall of the hole and increase the thickness of the copper on the board surface to achieve The customer's requirements mainly include micro-etching section, pickling section, copper plating section and various water washing sections; the positive film is the outer layer of the developing circuit, and the role of the circuit is more than that of the plate circuit - a process of tin plating, The copper surface exposed after development is plated with a layer of tin to protect the required lines from being etched in the subsequent alkaline etching.
There is no difference between circuit board and circuit board, they are essentially the same.
The circuit board is just a designed and manufactured substrate, and the circuit board refers to the PCB circuit board on which various components have been installed.
The names of circuit boards are: circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, multilayer circuit board, multilayer circuit board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed <copper Etching technology) circuit boards, etc. The circuit board makes the circuit miniaturized , and plays an important role in mass production of fixed circuits and optimizing the layout of electrical appliances.
Circuit board: On an insulating substrate, a printed board that connects wires from point to point is formed according to a predetermined design, but without printed components.
Circuit board: On an insulating substrate, a printed circuit board that connects wires from point to point and prints components is formed according to a predetermined design.
A circuit board is the kind with electronic components, and a circuit board is the kind of PCB board without electronic components.
The most contacted is the circuit board, and the motherboard is the circuit board.
