Re: Chemical tinning of PCB´s

[Martin Czech]

If you give the pcb design to a shop they can do solder stop
mask for you (green). Also tinning.
I think today DIY of pcbs is not such a good idea.


m.c.

:::From: Michael Buchstaller <buchi at takeonetech.de>
:::To: synth-diy at node12b53.a2000.nl
:::Subject: Chemical tinning of PCB´s
:::Date: Sun, 21 Jan 2001 22:05:06 +0100
:::Content-Transfer-Encoding: quoted-printable
:::
:::Some short query:
:::
:::I have noticed that on some PCB´s that i made in the early 80s there
:::is some corrosion on the traces. The boards continue to work fine, but
:::i think that i shold try to stop this for future projects.
:::
:::Now i have heard of a way to tin-plate a board by putting it into a chemical
:::solution for a while - this is told to make it easier to solder (have never 
had problems
:::with soldering my boards) and resistant against aggressive atmospheric con-
:::ditions (maybe normal city air ?)
:::Here in germany, Conrad sells something that is called "SENO Glanzzinn", a 
powder
:::that is dissolved in hot water. The board is soaked in that solution and 
becomes
:::shiny silver after s short time (some minutes).
:::
:::Has anybody tried this or another method ? Is it worth the extra time and 
money,
:::or do the tinned traces become dull very soon ?
:::
:::
:::-Michael Buchstaller