TECHNET Archives

November 2013

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Joyce Koo <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Joyce Koo <[log in to unmask]>
Date:
Wed, 20 Nov 2013 20:17:22 +0000
Content-Type:
text/plain
Parts/Attachments:
text/plain (90 lines)
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] 
______________________________________________________________________

ATOM RSS1 RSS2