Medical boards, industrial control boards, multi-layer boards, high-precision multi-layer boards such as security, LED, printed circuit boards, industrial control, circuit board factories, circuit board production
How to distinguish the quality of a PCB circuit board The thickness of the standard rule circuit board and the thickness of the standard circuit board are different sizes, and you can measure and check the thickness and specifications of your own products. 2. Light and color The external circuit board is covered with ink, and the circuit board can play the role of insulation. If the color of the board is not bright, and the ink is less, the insulation board itself is not good. 3. The appearance of the weld seam The circuit board has many parts. If the welding is not good, the parts are easy to fall off the circuit board, which will seriously affect the welding quality of the circuit board. It is very important to have a good appearance and a strong interface. 2. A high-quality PCB circuit board needs to meet the following requirements: 1. The telephone is required to be easy to use after the components are installed, that is, the electrical connection must meet the requirements; 2. The line width, line thickness, and line distance of the line meet the requirements to avoid wiring Heat, 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, and it will be broken soon after oxidation; 5. There is no additional electromagnetic radiation; 6. The shape is not deformed , So as to avoid deformation of the shell and dislocation of the screw holes after installation. 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. High temperature, high humidity and special environment resistance should also be considered in the range; 8. Surface mechanics The performance should meet the installation requirements.