PCB Technical - PCB wiring design rule check

PCB wiring design rule check
After the PCB board wiring design is completed, it is necessary to carefully check whether the wiring design conforms to the rules set by the designer, and at the same time, it is also necessary to confirm whether the established rules meet the requirements of the PCB board production process. The general inspection has the following aspects: (1) line Whether the distance between the line, line and component pad, line and through hole, component pad and through hole, through hole and through hole is reasonable, and whether it meets the production requirements.
(2) Whether the width of the power line and the ground line are appropriate, whether the power supply and the ground line are tightly coupled (low wave impedance), and whether there is a place for the ground line to be widened in the PCB board.
(3) Whether the best measures have been taken for the key signal lines, such as the shortest length, the protection line is added, and the input line and output line are clearly separated.
(4) Whether there are separate ground wires for the analog circuit and digital circuit part.

(5) Whether the graphics (such as icons, annotations) added to the PCB board will cause signal short circuit. Modify some undesirable line shapes.
(6) Whether there is a process line on the PCB, whether the solder mask meets the requirements of the production process, whether the solder mask size is appropriate, whether the character logo is pressed on the device pad, so as not to affect the quality of the electrical equipment.
(7) Whether the outer frame edge of the power ground layer in the multi-layer PCB board is reduced, for example, the copper foil of the power ground layer is exposed to the outside of the board and it is easy to cause a short circuit.
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