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March 2004

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Subject:
From:
Lee Whiteman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 1 Mar 2004 18:10:56 -0500
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text/plain (152 lines)
Karen,

Is that report published and available?

Lee Whiteman
Senior Manufacturing Engineer
E-Mail: [log in to unmask]
Ph: (610) 362-1200 x208
Fax: (610) 362-1290


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Karen Walters
Sent: Monday, March 01, 2004 2:28 PM
To: [log in to unmask]
Subject: Re: [TN] Use Nitrogen or Not!

Based on the studies I did with the Massachusetts Lead Free Consortium
where we ran a large lead free design of experiment.  We definitely saw
visually enhancements to the quality of the lead free solder joints when
Nitrogen was utilized at 100 ppm.

In this study Nitrogen contributed as much as 10% to the visual yields
on
our lead free study.

Karen Walters
Customer Quality Engineer
SKYWORKS Solutions, Inc.
20 Sylvan Road
Woburn, MA 01801
t. 781.376.3599
f. 781.376.3320
c.781.844.2227




                      "Morse, Carrie"
                      <CMorse@CIRTRONIC        To:       [log in to unmask]
                      S.COM>                   cc:
                      Sent by: TechNet         Subject:  Re: [TN] Use
Nitrogen or Not!
                      <[log in to unmask]>


                      02/27/2004 01:31
                      PM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to
                      "Morse, Carrie"






Yes -- If you are upgrading equipment for Pb Free, definitely have the
option for Nitrogen added to the equipment.  IF you choose NOT to use
the
nitrogen, you can do so through the recipe.  It will be easier NOT to
use
Nitrogen when you are plumbed for it than to Try to use Nitrogen when
you
are NOT plumbed for it.

-Carrie

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Scott Lefebvre
Sent: Friday, February 27, 2004 1:26 PM
To: [log in to unmask]
Subject: [TN] Use Nitrogen or Not!


I am looking at upgrading our Reflow and Wave Solder equipment for Pb
free.
I wanted to know what the consensus is for the requirement of Nitrogen
for
these two systems. It seems to depend on who you ask some say you will
need
Nitrogen and others say no.

Thanks,

Scott Lefebvre

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