The design of the printed circuit board mainly refers to the layout design, which needs to consider various factors such as the layout of external connections, the optimized layout of internal electronic components, the optimized layout of metal connections and through holes, electromagnetic protection, and heat dissipation.

When designing a PCB (printed circuit board), one of the most basic issues that needs to be considered is how many wiring layers, ground planes and power planes are needed to achieve the functions required by the circuit, and the wiring layers, ground planes and power supplies of the printed circuit board The determination of the number of layers of the plane is related to requirements such as circuit function, signal integrity, EMI, EMC, and manufacturing cost. For most designs, there are many conflicting requirements in the PCB performance requirements, target cost, manufacturing technology, and system complexity. PCB laminate design is usually decided by a compromise after considering various factors. Digital circuits and radio circuits are usually designed with multi-layer boards.

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Link to this article:Multilayer PCB design concept

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