How to distinguish whether PCB layout planning is reasonable?
The layout of PCB components is an important process in the process of PCB manufacturing. In the process of component layout planning, it is necessary to check whether the overall layout is reasonable and whether it can play a good role. Reasonable layout of PCB components can make PCB obtain good performance and ensure the quality of products. Yonghong electronic technical personnel think that whether the layout planning of PCB is reasonable should be checked from the following aspects:
1. Check whether the dimension of PCB is consistent with the dimension of processing drawing, whether it meets the requirements of PCB manufacturing process, and whether there are behavior marks. This requires special attention. The layout and wiring of many PCB boards are very beautiful and reasonable, but the accurate positioning of the positioning connector is neglected, resulting in that the planned circuit can not be connected with other circuits.
2. Check whether the layout of components is dense, orderly and orderly, and whether all the components are laid out. In the layout of components, we should not only consider the direction and type of signal, but also consider the overall density of the device layout to achieve uniform density.
3. Pay attention to see if the components conflict in two-dimensional and three-dimensional space. Pay attention to the practical dimension of the device, especially the height of the device. The height of components without layout in welding shall not exceed 3mm.
4. Pay attention to whether the components that need to be replaced frequently can be easily replaced, and whether the plug-in board can be easily inserted into the equipment. It should be ensured that the replacement and plug-in of frequently replaced components are convenient and reliable.
5. Check whether the adjustable element is easy to adjust.
6. Check whether there is proper space between the thermal element and the heating element.
7. Check whether there is radiator or electric fan in the place where heat dissipation is needed, and whether the air flow is unobstructed. Pay attention to the heat dissipation of components and circuit boards.
8. Check whether the signal direction is smooth and the interconnection is shorter.
9. Check whether the plug, socket, etc. are opposite to the mechanical planning.
10. Consider the annoyance of PCB board.
11. Consider the mechanical strength and performance of PCB.
12. Considering the artistry and beauty of PCB layout
The article comes from:http://www.yspcb.cn
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