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May 2009

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Subject:
From:
Robert Kondner <[log in to unmask]>
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Date:
Thu, 28 May 2009 16:36:03 -0400
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If you can do a good job for 15 years then I would suggest anything in the
air is good for soldering.

Don't change a thing.

Bob Kondner


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Joseph E (US SSA)
Sent: Thursday, May 28, 2009 4:25 PM
To: [log in to unmask]
Subject: Re: [TN] Conformal coating process

If you haven't seen any pesky solderability problems in 15 
years, then the risk is probably overstated.  And if your
solder connections meet visual requirements, then your customer
has no cause for concern.

-Joe



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Johnson
Sent: Thursday, May 28, 2009 3:38 PM
To: [log in to unmask]
Subject: [TN] Conformal coating process

We are a contract builder that manufactures printed circuit board
assemblies and apply a silicone conformal coating to those assemblies.
Our coating process is not isolated from the assembly and test area.  We
use a Sn63Pb37 solder process in both our smt and wave solder areas.
This has been our process for at least the last 15 years.  We are being
told, by a potential customer, that we are risking silicone
contamination of our solder joints as a result of our coating process
being in close proximity to assembly and test.  
What are the risks to solder joint quality, if any?  Thanks.  

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