With the continuous development of electronic technology, the use of multilayer PCB boards is becoming more and more extensive. Unlike single-layer or double-layer pcb boards, multi-layer boards can achieve higher integration while ensuring circuit functions. So in the process of making multi-layer PCB, what key skills need special attention?

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1. Choose the right material It is very important to choose the right pcb material, mainly including the substrate material and the thickness of the copper clad layer. FR-4 is usually used as the substrate material, which has excellent insulation performance and mechanical strength. In addition, copper thickness is also a factor that needs to be considered. Usually, 1oz (35um) and 2oz (70um) copper clad layer thicknesses are used, which are suitable for different circuit board requirements.

2. Carry out good layout and routing In the production of multi-layer PCBs, layout and routing are crucial links. A good layout can effectively reduce interference and cross-coupling, and can make the circuit board more aesthetic. When wiring, it is necessary to avoid too dense and unnecessary spiral winding, and keeping it simple can improve the stability of the circuit board.

3. Reasonable planning of power supply and grounding The design of power supply and grounding is the key to ensure stable circuit performance. In the design of multi-layer pcb board, it is necessary to plan the position of power supply and grounding to make it as short and direct as possible to reduce the impact of load current on grounding, so as to ensure the stable performance of the circuit.

4. Carry out a good pad design A good pad design can key the stability and electrical connectivity of the circuit. In the production of multi-layer boards, the design of the pads needs to be carefully planned to avoid blind penetration and blind hole misdesigns as much as possible to ensure the definite positioning of the pads. In the production and design of multi-layer pcb boards, it is necessary to pay attention to the above key skills in order to produce multi-layer boards with stable performance, beautiful layout and convenient use.

For beginners, the production and design of multilayer PCB boards can improve the level of electronic technology and hands-on practical ability, and it is a technology worth trying.

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