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  When a good PCB circuit board is produced, the requirements are very standard, whether it is thickness, size, performance, etc., there will be requirements. Let's introduce what requirements a good PCB circuit board meets?
  1. After the components are installed, the telephone should be easy to use, that is, the electrical connection should meet the requirements;
  2. The line width, line thickness and line spacing of the line meet the requirements to avoid the line heating, open circuit, and short circuit;
  3. The copper skin is not easy to fall off under high temperature;
  4. The copper surface is not easy to oxidize, which affects the installation speed. It will be broken soon after oxidation;
  5, no additional electromagnetic radiation;
  6. The shape is not deformed, so as to avoid deformation of the shell after installation and dislocation of the screw holes. Now it is all mechanized installation, the hole position of the circuit board and the deformation error of the circuit and the design should be within the allowable range;
  7, and high temperature, high humidity and resistance to special environments should also be considered;
  8. The mechanical properties of the surface must meet the installation requirements;