Joe,
You are absolutely right.
I misspelled his name and chose the wrong suggested alternate from spell check.
So much for being in a hurry.
Phew, thanks for correcting this.
Best regards,
Gerry
> Date: Thu, 21 Nov 2013 10:51:36 -0500
> From: [log in to unmask]
> Subject: Re: [TN] Final Surface finish
> To: [log in to unmask]
>
> 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,
> >>
> >>
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