I am very surprised by the OSP and HASL usage. So much so that I
question the validity of these charts.
I am familiar with the types of pwbs in the TC area, and I would
estimate that IAg makes up about 25% of all pwbs, as a minimum.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Franklin D Asbell
Sent: Tuesday, September 19, 2006 7:55 AM
To: [log in to unmask]
Subject: Re: [TN] ENIG
I'm surprised the percentage of OSP still being processed.
Franklin
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, September 19, 2006 7:19 AM
To: [log in to unmask]
Subject: Re: [TN] ENIG
Mornin' Inge and Everybody!
I have the chart that Inge sent me posted. It's at:
http://stevezeva.homestead.com/files/PCB_Finish.jpg
Actually, I'm not surprised at all. From my own perspective at my
current employer, I can count the number of ENIG boards we build here on
one hand...
everything else is HASL. I haven't built an OSP finished PCB since I was
out in California in 1999, and I've only built one ImAg PCB.
At my last employer we built a few more ENIG boards, but the
overwhelming percentage was HASL...more like 85-95%.
-Steve Gregory-
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord
(KC/EMW)
Sent: Tuesday, September 19, 2006 5:32 AM
To: [log in to unmask]
Subject: Re: [TN] ENIG
I've seen all answers on your question. I'm surprised that ENIG has such
a low part of the total market, just some 3%, while HASL has more than
60%.
See tart statistics which I send to Steve's wall. The statistics is from
McMurdy.
Inge
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dan Skweres
Sent: den 18 september 2006 23:54
To: [log in to unmask]
Subject: [TN] ENIG
We have, at times, had an outside plating service have difficulties with
plating of ENIG on our bare boards. The interesting anomaly we have
encountered is lack of plating on certain pads. They tell us there is
something on the surface of the pads but when they return the panels to
us we micro etch (copper looks beautiful) and all pads look similar in
appearance. We even took a panel and coated immersion white tin with out
problems. This tells me that there isn't any thing on the surface of the
copper. There is one thing I did leave out. The pads that aren't taking
ENIG all happen to be in the same net. Has anyone encountered this? It's
almost like there is a charge being created in certain nets not allowing
the ion exchange to happen. Could it be entrapped chemistry within vias?
Any help and/or direction would be greatly appreciated.
Thanks,
Dan Skweres
Engineering Manager
Bartlett Manufacturing
Phone:847-639-2102 Ext.#230
Fax:847-639-8838
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