PCB Technical - PCB layout design of PCB copy board

In PCB design, layout is an important part. The quality of the layout result will directly affect the effect of the wiring, so it can be considered that a reasonable layout is a successful step in the PCB design.

There are two layout methods, one is interactive layout, and the other is automatic layout. Generally, interactive layout is used to adjust on the basis of automatic layout. During layout, the gate circuit can be reprocessed according to the wiring conditions. Allocation, exchange of two gate circuits, making it a good layout for easy wiring.

After the layout is completed, the design file and related information can also be returned and marked on the schematic diagram, so that the relevant information in the PCB board is consistent with the schematic diagram, so that future files and design changes can be synchronized, and at the same time, the simulation Relevant information is updated to enable board-level verification of the electrical performance and function of the circuit.

1. Consider the overall beauty

Whether a product is successful or not depends on the internal quality and the overall aesthetics. Both are perfect to be considered successful. On a PCB board, the layout of components must be balanced, dense and orderly, and not top-heavy or heavy.

2, layout inspection

(1) Does the size of the printed board match the size of the processing drawing? Can it meet the PCB manufacturing process requirements? Are there any positioning marks?

(2) Are there any conflicts between components in two-dimensional and three-dimensional space?

(3) Is the layout of the components dense and orderly and neatly arranged? Is it all finished?

(4) Can the components that need to be replaced frequently be easily replaced? Is it convenient for the plug-in board to be inserted into the device?

(5) Is there an appropriate distance between the thermal element and the heating element?

(6) Is it convenient to adjust the adjustable components?

(7) Are there any radiators installed where heat dissipation is needed? Is the air flow unobstructed?

(8) Is the signal flow smooth and the interconnection short?

(9) Do plugs, sockets, etc. contradict the mechanical design?

(10) Has the line interference problem been considered?