Four Methods of PCB Plating
If some components on the PCB are exposed to the air for a long time, they are easily oxidized and lose their luster, and they are corroded and lose solderability. Therefore, various technologies must be used to form protection. Among them, there are plating technolog ies , and the plating technology in PCB is divided into the following four methods: The first method: Finger-plated plating This plating method requires the plating of rare metals on the edge of the board, the protruding edge of the board or the gold finger, and can also be called the protruding part plating. In order to provide lower contact resistance and higher wear resistance, manual and automatic plating techniques are generally used . On the other hand, gold plating on contact plugs and gold fingers has now mostly been replaced by rhodium-plated, lead-plated, and plated buttons. The second method: Through hole plating There are a number of ways to create a layer of suitable