When choosing the thickness of a PCB board, there are several main considerations to consider.

　　1. Mechanical strength

　　A thinner PCB board usually has lower mechanical strength, while a thicker board will be more sturdy. Therefore, in application scenarios with high mechanical strength requirements, choosing a thicker PCB board thickness is more appropriate.

　　2. Welding performance

　　The thickness of the PCB board also affects the welding performance. A thinner plate thickness can provide better thermal conductivity, making it easier to dissipate heat during the welding process. A thicker plate thickness can provide better welding strength. Therefore, in application scenarios involving welding, it is necessary to choose the appropriate PCB board thickness based on specific welding needs.

　　3. Cost and Space Restrictions

　　Thicker plate thicknesses generally increase costs and occupy more space. In some application scenarios with cost and space limitations, it is necessary to choose a relatively thin PCB board thickness