Hi Dave and Vlad,

I have it up here:

http://stevezeva.homestead.com/What_else_it_can_be.pdf

Steve

On Wed, Dec 9, 2015 at 4:34 PM, David Hillman <
[log in to unmask]> wrote:

> HI Vlad - we can't open Dropbox here due to firewall restrictions so can
> you have Steve G. post the pictures?
>
> Dave Hillman
> Rockwell Collins
> [log in to unmask]
>
> On Wed, Dec 9, 2015 at 4:59 PM, Vladimir Igoshev <
> [log in to unmask]
> > wrote:
>
> > HI everyone,
> >
> > I'm attaching a link to a file showing something I'd appreciate your
> > thoughts on. It's a cross-section of a QFN on an IAg board;
> > Pb-free/no-clean process. As you can see from the EDS spectrum, that
> > greyish stuff between pins has pretty much only Sn and O in its elemental
> > composition.
> >
> > I know there is burn flux residue around solder joints but that stuff
> > doesn't have any C in it. The question I have is what is it.
> >
> > I spoke to Bev and both of us are still puzzled.
> >
> > Here is the link:
> >
> https://www.dropbox.com/s/3wbj62vqjyhvj2y/What%20else%20it%20can%20be.pdf?dl=0
> >
> > Thank you very much in advance.
> >
> > Regards,
> >
> > Vladimir
> >
> > SENTEC
> >
> >
> > ______________________________________________________________________
> > This email has been scanned by the Symantec Email Security.cloud service.
> > For more information please contact helpdesk at x2960 or
> [log in to unmask]
> > ______________________________________________________________________
> >
>
>
> ______________________________________________________________________
> This email has been scanned by the Symantec Email Security.cloud service.
> For more information please contact helpdesk at x2960 or [log in to unmask]
> ______________________________________________________________________
>


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________
-- 


This email and any attachments are only for use by the intended 
recipient(s) and may contain legally privileged, confidential, proprietary 
or otherwise private information. Any unauthorized use, reproduction, 
dissemination, distribution or other disclosure of the contents of this 
e-mail or its attachments is strictly prohibited. If you have received this 
email in error, please notify the sender immediately and delete the 
original.