A good circuit board, in addition to achieving the principle function of the circuit, but also considers EMI, EMC, ESD (electrostatic discharge), signal integrity and other electrical characteristics, but also to consider the mechanical structure, the heat dissipation of large power consumption chips, on this basis and then consider the aesthetic issues of the board, just like the art of carving, deliberate on every detail of it. Common PCB layout constraints principles In the layout of PCB components often have the following considerations. (1) Does the PCB board shape match the whole machine? (2) Is the spacing between components reasonable? Are there any horizontal or height conflicts? (3) whether the PCB needs to be put together? Is the process edge reserved? Are the mounting holes reserved? How to arrange the positioning holes? (4) How to place the power module and heat dissipation? (5) Is it convenient to replace the components that need to be replaced frequently?
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