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June 2003

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Subject:
From:
Doug Pauls <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 13 Jun 2003 08:08:10 -0500
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In addition to Mike's additions to Carrie's great list, you need to
consider the effects of outgas products on nearby metals.  Some of the
latex material outgas ammonia, acetic acid, or alchols.  These can and do
get into other components and can tarnish metals, especially if working
with silver.

Doug Pauls
Rockwell Collins




                      "Barmuta, Mike"
                      <Mike.Barmuta@FLU        To:       [log in to unmask]
                      KE.COM>                  cc:
                      Sent by: TechNet         Subject:  Re: [TN] evaluation of peelable solder mask for wave solder
                      <TechNet@listserv
                      .ipc.org>


                      06/12/2003 03:39
                      PM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to
                      "Barmuta, Mike"






In addition to the great list Carrie provided,  you may want to consider
the
following:

*       Ease of removal for various features and configurations of
application
*       Resistance to breakdown in the flux and solderwave
*       Ionic characteristics of the mask
*       Compatibility with board and final finish materials
*       Applied shelf life
*       dispensable Vs screenable

If you are post wavesolder washing the boards have you considered a soluble
mask instead of peelable which can be difficult and time consuming to
remove?

Regards

Michael Barmuta

Staff Engineer

Fluke Corp.

Everett WA

425-446-6076




-----Original Message-----
From: Tenison Stone [mailto:[log in to unmask]]
Sent: Thursday, June 12, 2003 12:10 PM
To: [log in to unmask]
Subject: [TN] evaluation of peelable solder mask for wave solder



Hi everyone,

I am working on a plan to evaluate peelable solder masks for wave
soldering.


We currently use a latex that takes overnight to dry.  I have several
samples from different vendors to use in an experiment.

What parameters should be included in the experiment to ensure I make the
best decision for my process?

Thank you for your help.

Tenison Stone
Manufacturing Engineer
Telex Communications
1930 West First Street
Blue Earth, MN  56013
507-526-3205   x2164
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