When designing PCBA boards, engineers must reduce costs and improve assembly quality while meeting the requirements of the overall mechanical and electrical performance, mechanical structure and reliability. So, what issues should be paid attention to in the design of PCBA board manufacturability?

1. Minimize the number of PCB layers: Single-sided boards do not need double-sided boards, and double-sided boards do not need multi-layer boards to minimize PCB processing costs.

2. Try to use reflow soldering technology, because reflow soldering has more advantages than wave soldering.

3. Minimize the process of PCB assembly process and try to use no-clean process.

4. Whether it meets the requirements of SMT technology and equipment for pcb design.

5. Whether the PCB shape and size are correct; Whether the small size PCB considers the splicing process.

6. Whether the clamping edge design and positioning hole design are correct.

7. Whether the positioning holes and non-grounding installation holes are marked with non-metallization.

8. Whether the Mark graphic and its position meet the regulations, and whether 1~1.5mm is left around to the solder mask.

9. Whether the requirements of environmental protection are considered.

10. Whether the selection of substrate materials, components and packaging meet the requirements.

11. Whether the PCB pad structure (shape, size, spacing) meets the DFM specification.

12. Whether the lead width, shape, spacing, and the connection between the lead and the pad meet the requirements.

13. Whether the overall layout of the components and the minimum spacing between components meet the requirements; whether the rework size is considered around large components, and whether the polarity arrangement direction of the components is as consistent as possible.

14. Whether the aperture and pad design of the plug-in components meet the DFM specification; whether the distance between adjacent plug-in components is conducive to manual plug-in operation.

15. Whether the solder mask and screen graphics are correct, whether the component polarity and IC pin are marked.

The above is the analysis of the PCBA board manufacturability design by FASTPCBA engineers. In the future, I will share some circuit board SMT chip processing and PCBA electronic processing problems with you.