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- Function partition: Clearly partition circuit modules with different functions to make the layout clear and facilitate debugging and maintenance.
- Signal flow direction: Arrange components rationally according to the signal flow direction, and try to keep the signal path direct and short, and reduce turning and crossing.
- Power supply and ground wire: Plan the wiring of the power supply and ground wire well to ensure stable power supply and low impedance of the ground loop.
- Priority of key components: Give appropriate positions and spaces to key components such as those with large heat generation and sensitive to signals.
- Spacing control: Keep sufficient spacing between components to avoid interference and facilitate operations such as soldering.
- Isolation of analog and digital parts: If there are analog and digital circuits, try to place them in isolation to reduce mutual interference.
- Heat dissipation consideration: Arrange heat dissipation paths near heating elements, such as reserving the installation position of heat sinks or designing heat dissipation holes.
- Connector layout: Facilitate external connection, and consider the convenience of plugging and unplugging in actual use.
- Consistency of component direction: Try to keep the direction of similar components consistent to enhance the regularity of the layout.
- Shielding and isolation: Conduct appropriate shielding or isolation design for parts that are susceptible to interference.
- Testability design: Reserve test points to facilitate subsequent circuit testing and fault diagnosis.
- 3D space utilization: Consider the height of components and rationally utilize the three-dimensional space of the circuit board to avoid interference between components.
