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August 2008

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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:
Mon, 11 Aug 2008 17:23:29 +0300
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Theoretically no, if it was properly applied in the first place. Provisos:
a) tender coatings, such as acrylics, like neither high temps nor 
aggressive chemicals in your wash water.
b) silicone coatings will wash OK but you may have problems with 
moisture absorption/adsorption in the drying stage.
c) urethanes and flexibilised epoxies should normally be OK

Brian

Ioan Tempea wrote:
> Dear Technos,
> 
>  
> 
> A quick one : can I water wash conformally coated boards?
> 
>  
> 
> This means conformally coated boards have been returned for rework, we
> will change the components (have to use WS flux) and have to wash.
> 
>  
> 
> Can regular water wash at 140F do any damage to coating?
> 
>  
> 
> Thanks,
> 
>  
> 
> Ioan 
> 
>  
> 
> 
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