Immersion Gold Surface Treatment Production Line
We already know that immersion gold compared to other surface treatment manufacturees, there are many advantages, but each PCBs is different, the specific requirements of the PCB need to be specific to analyse the following three cases to discuss:
1. If the PCB has a gold finger part of the need for gold-plated, but the gold finger outside the region can be selected according to the circumstances of the manufacture of spraying tin or immersion gold, that is, the usual "immersion gold + gold-plated finger" manufacture and "spray tin + gold-plated finger" manufacture. Occasionally, some designers in order to save costs or time constraints choose to make a immersion gold for the entire PCB to achieve the purpose, but if the immersion gold can not reach the thickness of the gold-plated, and the gold finger is often inserted and removed, there will be a bad connection.
2. if the PCB line width, line spacing and pad spacing is insufficient, in this situation, using the tin spray manufacture is often more difficult to produce, so in order to have good performance PCBs, usually using immersion gold manufacture.
3. immersion gold or gold-plated due to a layer of gold on the surface of the pad, so the weldability is good, the board performance is also stable. The disadvantage is that immersion gold is more expensive than conventional tin spray, if the thickness of the gold layer beyond the PCB factory's conventional manufacture capability is usually more expensive.
According to the above reasons, we have to determine whether we need to use immersion gold manufacture according to the way we need to apply for the PCB.
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