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] ______________________________________________________________________