Reprinted from: https://blog.csdn.net/weixin_43444989/article/details/102980622
1 Place vias on the edge of the area copper coating, add a large number of vias in the blank area after the copper coating, and add a large number of vias next to the signal line. What is the effect?
2 The role and rules of the PCB copper coating
2.1. PCB copper coating 9 Major Points of Attention
2.1.1, Pay attention to copper
coating for partitions 2.1.2, single-point grounding treatment
2.1.3, also apply copper to the ground of the crystal oscillator shell
2.1.4, eliminate islands
2.1.5, fanout
2.1.6 in advance , and do not have sharp feet
2.1.7. Do not apply copper in the open area of the wiring in the middle of the multilayer board.
2.1.8. Good grounding
2.1.9. The heat dissipation metal block of the power chip must be well grounded.
2.2. Comparison of solid copper and grid copper pour
3 Screen printing layer editing to select Chinese characters
4 The function of teardrops and the adding method
4.1 The function
4.2 Adding method
5 How to quickly place and name the pins
6 Lib drawing notes
6.1 Electrical Type options Meaning
High-frequency use shortcut keys
Schematic diagram
PCB
Others