Teach you how to judge the quality of circuit boards

With the rapid development of mobile phones, electronics, communications and other industries, the PCB circuit board industry has been growing rapidly. People are demanding more and more layers, weight, precision, material, color and reliability of components.

The thickness of PCB to standard PCB is different. Customers can measure and check according to the thickness and specifications of their products.

External circuit boards are covered with ink, circuit boards can play an insulating role, if the color of the board is not bright, less ink, insulation board itself is not good.

1. Require the telephone to be used well after the components are installed, that is, the electrical connection should meet the requirements;

2. Width, thickness and distance of the line meet the requirements, so as to avoid heating, circuit breaking and short circuit of the line.

3. Copper skin is not easy to peel off under high temperature.

4. Copper surface is not easy to oxidize, which affects the installation speed. It will be damaged soon after oxidation.

5. No additional electromagnetic radiation;

6. The shape is not deformed, so as to avoid the shell deformation and screw hole dislocation after installation. Now it is all mechanized installation. The hole position of circuit board and the distortion error of circuit and design should be within the allowable range.

7. High temperature, high humidity and special environment resistance should also be considered.