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How to choose a good surface treatment for PCB?
Recently, I have read an article about PCB surface treatment . However that article introduces some ways to deal with the surface treatment of PCB, like hot air leveling (tin spraying), organic solderability preservative (OSP), all-plate nickel plating and so on. But the fact is I can't understand them. I have heard them from books or others, but never use them in practice. I just feel confused, so I need a more straightforward explanation, in other words, I need more details about this not only in theory but also in practice.
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