Your TN posting is another example of why it is important t
Bob,
Your TN posting is another example of why it is important to participate
in TN and more importantly why it is essential to read the information
posted and analyze who it comes from and why it was posted and make
decisions based on the credibility of the posting. Most users of
products have nothing to sell you and nothing to gain by sharing their
experiences so their credibility is usually pretty good. I assume that
you don't own a company selling immersion silver chemistry or don't get
a sales commission for advertizing immersion silver. If that is the
case then your posting is extremely credible.
I should also comment that my experience with immersion silver started
in 1995 when Dr. Parker installed the first immersion silver line in
North America which used AlphaLevel. Doing Failure Mode Analysis (FMA)
on telecommunication products for the past 14 years (6 with Lucent
Techologies and 8 with Andrew) I can say with conviction that we have
not experienced any customer failures of products associated with
immersion silver surface finish.
Regards,
George
George M. Wenger
Andrew Solutions
Senior Principal FMA/Reliability Engineer
40 Technology Drive, Warren, NJ 07059
(908) 546-4531 (Office) (732) 309-8964 (cell)
[log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert
Sent: Wednesday, May 27, 2009 10:23 AM
To: [log in to unmask]
Subject: Re: [TN] Immersion Silver
For years our various PCB suppliers have tried to convince me that all
the problems with ENIG have been overcome. About the time I begin to
consider possibly moving to it, someone on this forum, usually a PCB
supplier, will post that there's no reason to avoid ENIG and there are a
dozen or more responses disputing it with personal experiences. Those
exchanges continue to reinforce that the decision I made years ago to
use Immersion silver on our products was, and still is, a sound one.
I just wanted to say "Thanks" to everyone who contributes to this forum
for helping all of us in making good decisions for our respective
businesses.
Bob Croslin
The Nielsen Company
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lee parker
Sent: Wednesday, May 27, 2009 7:46 AM
To: [log in to unmask]
Subject: Re: [TN] Immersion Silver
Steve
I installed the first immersion silver line in North America in 95. We
built millions of boards with this finish and the only issue brought to
my attention was exposure to a sulfur environment. Multiple reflows did
not present an issue and we stored the boards at customer sites for over
a year without a problem. Our customers did not find it necessary to use
gloves in the assembly operation.
Best regards
Lee
J. L. Parker Ph. D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Steve Kelly<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Tuesday, May 26, 2009 5:00 PM
Subject: [TN] Immersion Silver
Good Afternoon,
Any concerns about using immersion silver as a finish. PWB has to take
two
reflow cycles, 1 re-work cycle and one hand solder after the two
reflows.
Parts have to be transported from one part of the country to another
after
the two reflows. Thanks. Steve Kelly
Steve Kelly (PLEASE NOTE NEW E-MAIL ADDRESS)
(416) 750-8433 (work)
(416) 750-0016 (fax)
(416) 577-8433 (cell)
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