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Basic principles of pcb routing

2025-01-03

PCB wiring is a very important link in the PCB board, and understanding PCB wiring is something that beginners need to learn. In this article will share the PCB circuit board and precautions, hope to help users.

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PCB design should follow the rules:

1. Control the cable direction

2. Check the open and closed loop of the cable

3. Control the cable length

4. Control the length of the cable branch

5. Corner design

6. Differential cabling

7. The impedance board of the control PCB wire is matched with the cable terminal

8. Design grounding protection cables

9. Prevent cable resonance

PCB routing principles are as follows:

1. The input and output wires should be avoided parallel to each other, and the ground wire between the lines should be added to prevent feedback coupling.

2. The minimum width of the PCB wire is determined by the adhesion strength and current value between the wire and the insulating substrate.

3. The minimum spacing of PCB wires is determined by the insulation resistance and breakdown voltage between the wires in the worst case.

4, PCB printed board wire bend generally take circular arc, but also try to avoid large area of copper foil, for some reasons need to use large area of copper foil, also try to use grid.

The above are the principles and rules of PCB design and wiring.

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Basic principles of pcb routing

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