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PCB design tutorials and layout tips
发布时间：2024-05-23 15:04
I. PCB layout rules
1) In general, all components should be arranged on the same side of the board. Only when the top components are too dense, some devices with limited height and low heat generation, such as chip resistors, chip capacitors, chip ICs, etc., can be placed at the bottom.
2) To ensure electrical performance, components should be placed on a grid and arranged parallel or perpendicular to each other to maintain neatness. Generally, they are not allowed to overlap. The arrangement of components should be compact and should be evenly distributed over the entire layout.
3) The minimum distance between adjacent pad patterns of different components on the circuit board should be 1mm or more.
4) The distance from the edge of the circuit board is generally not less than 2mm. the optimum shape of the circuit board is rectangular, with an aspect ratio of 3:2 or 4:3. when the size of the circuit board is larger than 200mm x 150mm.
PCB mechanical strength should be considered.
I. PCB layout rules
(1) In general, all components should be arranged on the same side of the board. Only when the top components are too dense, some limited height, low heat devices, such as chip resistors, chip capacitors, chip ICs, etc., can be placed on the bottom.
2) To ensure electrical performance, components should be placed on a grid and arranged parallel or perpendicular to each other to maintain neatness. Generally, they are not allowed to overlap. The arrangement of components should be compact and should be evenly distributed over the entire layout.
3) The minimum distance between adjacent pad patterns of different components on the circuit board should be 1mm or more.
4) The distance from the edge of the circuit board is generally not less than 2mm. the optimum shape of the circuit board is rectangular, with an aspect ratio of 3:2 or 4:3. when the size of the circuit board is larger than 200mm x 150mm.
PCB mechanical strength should be considered.
Design Steps
3.1 Layout design
In the PCB, special components refers to the high-frequency part of the key components, such as the core components of the circuit, susceptible to interference components, high-voltage components, heat components, some of the anisotropic components. Their placement needs to be carefully analysed and the belt layout conforms to the circuit function and production requirements. Improper placement may lead to circuit compatibility problems and signal integrity issues, which can lead to PCB design failure.
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2024-05-23
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