Printed Circuit Board Layout Principles

• Component Arrangement: Align components on the soldering surface according to the schematic diagram for easier testing and maintenance.
• Wiring Direction: Ensure wiring aligns with the circuit diagram for efficient production and inspection.
• Layout Distribution: Maintain a reasonable, even, and structurally strict distribution for a neat and beautiful appearance.
• Types of Placements:
• Horizontal Placement: Ideal for circuits with few components and a large board size.

For resistors, the distance between pads varies based on their power rating.

• Vertical Placement: Suitable for boards with many components and a small size.

The distance between pads in vertical placement is generally 1 to 2/10 inches.

• Potentiometer Placement:

Potentiometers should be positioned on the board edge with the handle facing outward for easy adjustment of output voltage.

• IC Holder Usage:

Ensure correct orientation and pin placement when using an IC holder. The first pin should align with the positioning groove on the soldering surface.

Latest PCB Design Trends

• Miniaturization: With the demand for smaller electronic devices, PCB designs are focusing on compact layouts and components.
• High-Speed Design: To meet the requirements of modern electronics, PCBs are being designed to support high-speed data transfer and processing.
• Flexible PCBs: Flexible printed circuit boards are gaining popularity due to their ability to conform to different shapes and spaces.
• Embedded Components: Integrating components within the PCB layers is a growing trend to save space and improve performance.