Werner
I recall you once mentioning that your first Bell Laboratories Supervisor was Watson. By the time I came along pulse dialing and cross bar were all the rage.
Best regards
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Werner Engelmaier<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Wednesday, October 12, 2005 6:05 PM
Subject: Re: [TN] Hasl
Ahhh, but what quick learners you 'Southern Boys' are. I do not know
about older--maybe, but I sure 'retired' earlier.
Werner
-----Original Message-----
From: Lee parker <[log in to unmask]<mailto:[log in to unmask]>>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Wed, 12 Oct 2005 13:51:26 -0400
Subject: Re: [TN] Hasl
George
Werner is the master (but I am sure he is older), I am just beginning
to learn.
Best regards
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Wenger, George M.<mailto:[log in to unmask]<mailto:[log in to unmask]>>
To: [log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>
Sent: Wednesday, October 12, 2005 1:44 PM
Subject: Re: [TN] Hasl
Werner,
I'm beginning to think you and Lee are both "Good-Old-Boys" who
learned
a valuable lesson working at Bell labs; consulting is much easier with
those who have problems than those who don't. I don't think that
continuously finding customers that have ENIG problems makes you and
Lee
the most unlucky individual on the planet. Actually you may be among
the most lucky individuals who have business come looking for you
rather
than you looking for business.
Regards,
George
George M. Wenger
Reliability / FMA Engineer
Base Station and Subsystems Group
Andrew Corporation, 40 Technology Drive, Warren, NJ 07059 (908)
546-4531
[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Wednesday, October 12, 2005 1:21 PM
To: [log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>
Subject: Re: [TN] Hasl
Hi Joel,
I do agree with Lee Parker. I am glad you had no problems with
ENIG--many of my cients were not this lucky.
Werner Engelmaier
-----Original Message-----
From: Joel Mearig <[log in to unmask]<mailto:[log in to unmask]<mailto:jmearig@DELTATAUCOM<mailto:[log in to unmask]>>>
To: [log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>
Sent: Tue, 11 Oct 2005 12:54:21 -0700
Subject: Re: [TN] Hasl
Lee,
Good input that I agree with. However, I was wondering if you could
further discuss the "flash" vs. "ENIG" issue. I have been using ENIG
on
my Pb-free assemblies for about 7 years with very little problems. If
I
am missing something further education would be extremely helpful.
Thanks
Joel Mearig
Delta Tau Data Systems, Inc.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lee parker
Sent: Tuesday, October 11, 2005 10:03 AM
To: [log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>
Subject: Re: [TN] Hasl
Ramon
After reflowing a soldered surface, you will form a meniscus which
will
interfere with SMT component placement. To avoid the problem I
suggest a
flat metal finish such as immersion silver or flash gold (not ENIG)
Best regards
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Dehoyos,
Ramon<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]>>>
To:
[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:Tech<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:Tech>
[log in to unmask]<mailto:[log in to unmask]>>>
Sent: Tuesday, October 11, 2005 12:52 PM
Subject: [TN] Hasl
Hi technetters:
Is there a fine pitch limit to the use of HASL board
plating
finish due to its variation in thickness? Does selective solder
strip
and reflow plating, SSSR, have a significant advantage over HASL?
Any
comments relating to platting finish would be greatly appreciated. I
thank you for your comments.
Ramon
ME
410.552.2210
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