Proofing factories are mainly divided into the following three types. There are professional model factories and individual copying companies, and the best is a regular PCB factory. Generally speaking, regular PCB factories are long-term customers, and there will be professional flying needle testing after the proofing is completed. Such a factory is certainly the safest for customers. Professional proofing factories usually only make one or two small boards, which has low cost and small output, and there will be no formal flying needle test after completion. In this case, if the customer has problems after receiving the samples, such a factory will not make relevant compensation. Therefore, it is still necessary to choose a formal PCB proofing factory with formal delivery commitment and quality assurance to do proofing.
PCB design engineers need to pay more attention to parameter information, quantity and component packaging in the design process. In the design process, they need to plan the whole line, whether there is a short circuit and whether the electrical inspection is in place. After all the inspections are completed, the design engineer must first ensure that there is no package in the established packaging library, and then when designing PCB drawings, he must ensure that all the components needed in the drawings are packaged in the packaging library, so as to facilitate the smooth design. For the design parameters of PCB, designers need to design corresponding layers, colors, sizes, processes, etc. According to the requirements of product circuit system; The designed PCB diagram needs to generate a network table; The overall layout of PCB design can be combined with automatic layout and manual layout, and the component packaging model can be loaded into the appropriate position in the PCB design window, thus making the component layout more reasonable and beautiful. Attention should also be paid to the wiring of PCB design drawings. If automatic wiring is unsuccessful, manual wiring can be performed. After all the designs are completed, you can save the PCB layout of the design and then output the design file. Finally, there is an important step, that is, the simulation analysis of PCB board, in short, the signal simulation of PCB board, so as to analyze whether the layout and parameters of the whole line are reasonable. The ultimate goal is to consider the reasonable cost planning of PCB and the stability of products.