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Date: | Thu, 21 Nov 2013 06:02:31 -0600 |
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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,
>
>
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