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April 2007

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Subject:
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Brian Ellis <[log in to unmask]>
Date:
Tue, 10 Apr 2007 12:57:55 +0300
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Fungicides used to be added to phenol-formaldehyde lacquers, in the days 
when all printed circuits were on cheap paper-based laminates (early 
1950s, because the paper coating treater was poor in uniformity before 
stacking prior to pressing. However, that was also in the days when 
anode voltages were typically 250 V. I remember that 20 or so years ago, 
some conformal coatings contained fungostats and bacteriostats, but I 
haven't a clue whether they are still available. Normally, I would not 
expect modern materials to support mycelia penetration, so fungostats or 
fungicides should not be necessary. Beware that many fungicides are 
based on ionic metal salts!

Brian

Reuven Rokah wrote:
>  
> One of our potential customer is interesting with "Fungus treatment" for
> assemblies and cables.
> 
> Do you familiar with such process?
> 
> Thanks
> 
> Reuven
> 
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