Rich

Just like Ed said, it's right in the 830 handbook. It is a good predictor
of adhesion when dealing with a new product from my customers. Some
coatings/manufacturers do work much better than others when it comes to
"wetting" out. We find the older formulations the worst as they can't
change much and cause issues with requalifications.

Lloyd Duso
Plant Manager
Diamond-MT
(814) 535-3505
www.Diamond-mt.com

On Mon, Aug 28, 2017 at 10:26 AM, Richard Kraszewski <
[log in to unmask]> wrote:

> I seem to  recall numerous industry articles (Pauls, Keeping, etc.)
> referencing  that  ideally the surface energy of  a PCBA should be >~ 40
> dyne cm  prior to coating.
> I have searched my files but cannot seem to find any of  them now. Only
> some referencing the need   to consider surface energy.
>
> Does someone have any  that reference " >~ 40 dyne cm  prior to coating"
> readily available  that they can forward to me?
>
> Thanks
>
> Rich  Kraszewski
> Senior Staff Process Engineer
> Plexus Engineering Solutions
>
>
> * * * * * * * * CONFIDENTIALITY NOTICE * * * * * * * *
>
> This e-mail and any attachments are confidential from Plexus Corp. and may
> contain information which is privileged, confidential, and/or protected by
> non-disclosure agreements.  They are intended solely for the use of the
> named addressee(s).  .  Any unauthorized use or disclosure may be
> unlawful.  If you are not a named addressee, you must not use, disclose,
> retain or reproduce all or any part of the information contained in this
> e-mail or any attachments If you have received this transmission in error,
> please destroy it and notify us immediately by return e-mail or by calling
> + 1 888 208 9005.
>