How to reduce the production cost of circuit boards

The size of the original size copper-clad board of the circuit board is too large, and it is inconvenient to process. Sometimes it can not even be put into the printed circuit board processing equipment for processing, so it needs to be cut into several copper-clad boards of processing size first. As for the specific size of the processing size, it needs to be determined according to the processing equipment for making printed wiring boards, the size of each printed wiring board, and some process parameters. In addition to the length and width required for the printed circuit pattern itself, these process parameters also include the width consumed by the screw holes that fix the printed circuit board on the electronic product frame, the process margin of the outline processing, chemical plating, plating and corrosion Retention of fixtures, retention of positioning pins for multilayer printed wiring boards, alignment mark retention between layers, mark retention of printed circuit board manufacturers, edge width of printed circuit boards, etc., among which Some recommended values of process parameters can be obtained from the copper-clad manufacturers or distributors. During the production and processing of the printed circuit, it can be determined according to the above data how many processing-size copper-clad plates are cut into a large original size copper-clad plate, whether it is cut vertically or horizontally, whether it is possible to perform nesting, and so on.

This is an example of a full-size copper-clad cutting. It cuts an original-sized copper-clad board into 4 machine-sized copper-clad boards, and each machine-sized copper-clad board contains 6 printed wiring boards. If the longitudinal dimension of the printed wiring board is increased by 1mm, then each copper-clad board of processing size can only be cut into 4 printed wiring boards, which will undoubtedly increase the cost of the printed wiring board to 6 150% for circuit boards. It can be seen that, according to the original size of the copper-clad board, it is important to design the printed circuit board reasonably.