Introduction:
The goal of any design is to ensure successful and efficient manufacturing. A design that is detached from its manufacturing purpose is ineffective. PCB design aims to optimize manufacturing speed, cost, and quality.
- Design of Edge Positioning Hole:
- Design of Reference Mark:
- Design of Solder Pad:
Proper PCB panel design and layout are essential for successful production. The edges on both sides of the PCB must have a minimum of 5mm reserved space, with positioning holes placed along these edges. These holes are critical for securing the board during assembly. If there is insufficient edge reservation, a temporary edge can be added, which can be removed after production.
The reference mark serves as a guide for optical detection during assembly, ensuring the accurate placement of components. PCB panels should include reference marks on both the entire board and individual panels to address any inconsistencies in spacing between panels. For components with small pin spacing, avoid using local reference markers, while for general PCBs, place reference marks diagonally or along the extension lines.
Different components and connection methods require tailored pad designs to prevent issues such as tombstoning, weak solder joints, or improper soldering. For example, excessively long pads can cause too much solder to accumulate, while overly short pads can weaken the solder joint. Pads that are too wide may result in improper soldering on one side. If the distance between pads is incorrect, issues like solder shifts or tin balls may occur. PCB designers must have specialized knowledge or experience with the soldering process to ensure pads are designed according to industry standards, minimizing production issues.
Conclusion:
In the fast-paced world of electronics, product updates are rapid, leading to intense market competition. To stay competitive, PCB design has become more complex, with evolving standards and greater design challenges. A successful PCB design integrates both design and manufacturing, enhancing each other and improving market competitiveness. At Wellcircuits, we stay aligned with the trends in the electronics industry to meet customer needs and deliver optimal service. We look forward to working with you!
If you have any questions regarding PCB or PCBA, please contact me at info@wellcircuits.com.
