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]>
To: [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]
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]>
To: [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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