If you use XRF, also measure the thickness of the finish.  Some horizontal HASL machines produce a very flat finish.

Don Vischulis

Sent from my iPad

> On Nov 20, 2013, at 4:15 PM, "Wenger, George M. [Contractor]" <[log in to unmask]> wrote:
> 
> Hi Victor,
> 
> Have you looked at the surface finish with XRF.  An XRF spectrum and photograph of the finish it might help determine what the finish is
> 
> Regards,
> George
> George M. Wenger
> Failure Signature & Characterization Lab LLC
> 609 Cokesbury Road, High Bridge, NJ 08829
> (908) 638-8771 Home (732) 309-8964 Mobile
> E-mail: [log in to unmask]
> [log in to unmask]
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
> Sent: Wednesday, November 20, 2013 12:15 PM
> To: [log in to unmask]
> Subject: [TN] Final Surface finish
> 
> Fellow TechNetters:
> 
>   Is there a final surface finish which has a high tin content along with some silver.   It is not the traditional ImAg.   The finish appears somewhat dull with good coverage on the edges of copper features.
> 
> Victor,
> 
> 
> ______________________________________________________________________
> 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] 
______________________________________________________________________