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Immersion Tin PCBs

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Immersion Tin PCBs

Postby jim » Fri Feb 06, 2015 3:22 am

Immersion tin pcb finish proplem
Every immersion Tin plater faces the same problem with their immersion Tin bath,
it ultimately begins to plate black Tin.

Immersion tin plating
And until now, there has been no way to predict when the bath would begin to plate black Tin.
Now there is a way, but before we discuss the method,
jim
 
Posts: 53
Joined: Mon Sep 29, 2014 3:59 am

Re: Immersion Tin PCBs

Postby jim » Fri Feb 06, 2015 3:51 am

If you so desire, it is a simple affair to chemically plate a thin layer of tin on the surface of the copper traces. Most commercial PCBs at least have tin plated solder pads in a addition to a soldermask to prevent short circuits over the traces (usually the distinctive green color, though sometimes other colors are used). In our case, however, to prevent corrosion and improve the solderability of joints a tin plating will do nicely.
jim
 
Posts: 53
Joined: Mon Sep 29, 2014 3:59 am


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