PC board of choose and buy when need to pay attention to what?
1, the packing, though the packing does not decide the quality of the PC board, but like you buy other products, good packing a good first impression to the person, and through the packaging can also reflect the manufacturer to deal with things. Therefore, observation is also a PC board of choose and buy ring packing.
2, the protective film uncovered the PC board, to look at the surface, if discover there are more bubbles and particles, and then the selection of raw materials is not the best, generally good PC board, basic can't see any particle and bubble surface.
3, put to the PC board the sun insolates, after a period of time, if discover local yellowish phenomenon in a plate, PC board quality is bad. In addition, you can in the PC board pad below a piece of white paper, by comparing the PC board whether there is the phenomenon of yellow, to observe if yellow, explain quality is bad.
4, select smaller PC board combustion test, good quality after the PC board, away from the fire, will go out.
the above is our small make up for your introduction about PC board of choose and buy, hope we can help you, if you want to learn more about the knowledge of the PC board, you can visit our website, we will provide you with more professional information.
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