I think you mean Gerard O'Brien. And yes, he would be a very good person to speak with on this subject matter. Joe Russeau ----- Original Message ----- From: "Gerry Gagnon" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, November 21, 2013 10:22 AM Subject: Re: [TN] Final Surface finish > Joyce, > > I think you nailed it. > > Immersion coatings have excellent copper coverage characteristices (due to > displacement reactions) but are also VERY thin. If you push for higher > deposit thickness (like everyone always wants) you get issues. > > Victor, you could run an SEM and energy dispersive x-ray map of the > surface and pin it to the patent. > > XRF as you've been advised is a fun task indeed. This is probably a new > formulation, so there might be issues finding good cal standards for the > XRF. I think our friend George O'Brien would have something useful to say > on XRF for you if he's lurking. > > Good hunting, > > Gerry > > > >> Date: Wed, 20 Nov 2013 20:17:22 +0000 >> From: [log in to unmask] >> Subject: Re: [TN] Final Surface finish >> To: [log in to unmask] >> >> Whiskeys free immersion tin coating? Like this? >> http://www.google.com/patents/EP2494094A2 >> >> Joyce Koo >> Researcher >> Materials Interconnect Lab >> Office: (519) 888-7465 79945 >> BlackBerry: (226) 220-4760 >> >> -----Original Message----- >> From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez >> Sent: Wednesday, November 20, 2013 3:03 PM >> To: [log in to unmask] >> Subject: Re: [TN] Final Surface finish >> >> This final surface finish does NOT appear to be a HASL process. Unless, >> the air knives pressure was so high that it did not leave ANY RIPPLES of >> the copper pad surface. >> Victor, >> >> -----Original Message----- >> From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Fenner >> Sent: Wednesday, November 20, 2013 1:52 PM >> To: [log in to unmask] >> Subject: Re: [TN] Final Surface finish >> >> Theoretically also PB-free HASL, I say theoretically because the usual >> alloy is Sn/Cu or modified Sn/Cu on cost grounds. >> >> Regards >> >> Mike Fenner >> Bonding Services & Products >> M: +44 [0] 7810 526 317 >> T: +44 [0] 1865 522 663 >> -----Original Message----- >> From: TechNet [mailto:[log in to unmask]] On Behalf Of GRIVON Arnaud >> Sent: Wednesday, November 20, 2013 5:19 PM >> To: [log in to unmask] >> Subject: Re: [TN] Final Surface finish >> >> Immersion Tin? >> Ag is known to be the anti-whisker additive for most chemistries. >> Best regards, >> >> Arnaud Grivon >> PCB/PCBA Technology Expert >> Thales Global Services - ESS (Engineering Shared Services) 18, avenue du >> Maréchal Juin Bât. C - Bureau C2-135 >> 92366 Meudon-la-Forêt Cedex >> France >> Tél : (+33) (0)1 70 28 23 88 >> >> Visit our website : http://www.thalesgroup.com >> >> [@@ THALES GROUP INTERNAL @@] >> >> >> -----Message d'origine----- >> De : TechNet [mailto:[log in to unmask]] De la part de Victor Hernandez >> Envoyé : mercredi 20 novembre 2013 18:15 À : [log in to unmask] Objet : [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] >> ______________________________________________________________________ >> >> ______________________________________________________________________ >> 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 transmission (including any attachments) may contain confidential >> information, privileged material (including material protected by the >> solicitor-client or other applicable privileges), or constitute >> non-public information. Any use of this information by anyone other than >> the intended recipient is prohibited. If you have received this >> transmission in error, please immediately reply to the sender and delete >> this information from your system. Use, dissemination, distribution, or >> reproduction of this transmission by unintended recipients is not >> authorized and may be unlawful. >> >> ______________________________________________________________________ >> 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] ______________________________________________________________________