PCB Design Points - KingSheng PCBA

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(A) layout planning
In PCB design, layout is the first step and a crucial step. To fully consider the function of the components, heat dissipation, signal interference and other factors. For example, large heat-generating components should be as close as possible to the heat sink, such as the CPU, etc.; sensitive components should be away from sources of interference, such as crystal near the signal lines should be avoided to avoid arranging vulnerable to interference. At the same time, we should reasonably plan the placement of components, so that the line connection is the shortest and most concise, reducing the delay and loss of signal transmission.

PCB

(B) Wiring principles
Wiring needs to follow certain rules to ensure signal integrity and stability. For high-speed signals, attention should be paid to line length matching, impedance matching, to prevent signal reflection and distortion. Generally speaking, high-speed signal lines should be as short and straight as possible, avoiding right-angle turns, and 45-degree angles or arc turns can be used. In addition, the isolation between different signals should be considered to prevent crosstalk, such as analog and digital signals should be wired separately .

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