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April 2012

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Subject:
Re: Max time above liquidus
From:
"Stadem, Richard D." <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Stadem, Richard D.
Date:
Thu, 5 Apr 2012 08:32:06 -0500
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text/plain
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text/plain (27 lines) 
You mean time above solidus. Time above liquidus is vapor. 
Yes, 105 degrees in liquidus does seem excessive, but it depends on the size/mass of the CCA being soldered. It might be required for very large CCAs.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Fabien Guizelin
Sent: Wednesday, April 04, 2012 6:04 PM
To: [log in to unmask]
Subject: [TN] Max time above liquidus

Hi,
Should I be concerned by excessive TAL ?   (inter-metalic, etc)
Do you consider 105sec TAL with a Indium 5.1 paste excessive ?   (Indium recommends 45-60sec)
Thanks,
Fabien



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