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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 19 Aug 1999 16:34:55 +0100 |
Content-Type: | text/plain |
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Yasmeen,
Assuming you need to look at the structure, and dont want to fully
remove the Sn-Pb,
I have used the following as a general etchant in the past with
good results. Use a swab to get a more even etching, or take care in a
petri dish
10ml Acetic acid, mix with
80ml Glycerol and then add
10ml of Nitric acid
etch time 2-10s depending on how far you want to etch into the
structure and what you are looking for.
Lead will be darkened
alternativley,
use 5g of silver nitrate in 95ml of DI water if you want a high
contrast
Good luck
Roger
Motorola AIEG
______________________________ Reply Separator _________________________________
Subject: [TN] Etchant for SnPb solder
Author: "TechNet E-Mail Forum." <[log in to unmask]> at #email
Date: 19/08/99 09:07
Hello Everyone!
What is a good etchant for SnPb (60/40) Solder?
Thanks,
Yasmeen
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