1、檢查原理圖的合理性和正確性;
2、檢查原理圖組件包的正確性;
3. 强弱電流之間的距離, the distance between isolated areas;
4. 檢查示意圖和 PCB圖 correspondingly to prevent the loss of the network table;
5. Whether the package of the component is consistent with the actual product;
6. Whether the placement of the components is appropriate:
A. Whether the components are easy to install and remove;
B. Whether the temperature-sensitive element is too close to the heating element;
C. Whether the distance and direction of the components that can generate mutual inductance are appropriate;
D. Whether the placement between the connectors is smooth;
E. Easy to plug and unplug;
F. Input and output;
G. Strong current and weak current;
H. Whether digital and analog are interlaced;
I. Arrangement of elements on the upwind side and downwind side;
7. Whether the directional component has been wrongly flipped instead of rotated;
8. Whether the mounting holes of the component pins are suitable and whether it is easy to insert;
9. Check whether the empty pin of each component is normal and whether it is a missing wire;
10. 檢查同一網臺上下層是否有通孔, and the pads are connected through the holes to prevent disconnection and ensure the integrity of the circuit;
11. 檢查上下字元放置是否正確合理. 不要放置組件來覆蓋角色, so as to facilitate the operation of welding or maintenance personnel;
12. 上層和下層的非常重要的連接不應僅與串聯組件的焊盤連接, it is best to use vias;
13. The arrangement of power and signal wires in the socket should ensure signal integrity and anti-interference;
14. Pay attention to the proper ratio of pad and solder hole;
15. 插頭應放在 PCB板 as much as possible and easy to operate;
16. 檢查組件標籤是否與組件匹配, and the components should be placed in the same direction as possible and placed neatly;
17. 在不違反設計規則的情况下, the power and ground wires should be as thick as possible;
18. 在正常情况下, 上層應水准,下層應垂直, and the chamfer shall not be less than 90 degrees;
19. PCB上安裝孔的尺寸和分佈是否合適, and minimize the PCB bending stress;
20. Pay attention to the height distribution of the components on the PCB and the shape and size of the PCB to ensure easy assembly;
The above is the introduction of the PCB設計 項目檢查表. Ipcb還提供PCB製造商和PCB製造技術.