I would be happy to participate.  Please let me know.

Jim
===============================
Jim Maguire
Senior Principal Engineer
Boeing Information Space & Defense Systems
PO Box 3999  M/S 3W-97
Seattle, WA  98124-2499
Phone (253)657-9063     Fax (253)657-8903
Pager (206)982-3737
Email:  [log in to unmask]
================================

> ----------
> From:         Jack Crawford[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Jack Crawford
> Sent:         Thursday, April 02, 1998 3:09 PM
> To:   [log in to unmask]
> Subject:      [TN] Invitation to Participate in Cleanliness Assessment
> Study
> 
> Ladies and Gentlemen of TechNet:
> 
> The IPC Bare Board Cleanliness Assessment Task Group 5-32C is
> conducting a
> correlation study between different ionic cleanliness test methods
> used to assess
> bare board cleanliness.  Details of the proposed study can be found in
> the October
> minutes of this task group from the IPC archives (www.ipc.org).  This
> testing is
> being done to examine ionic cleanliness levels between the existing
> ROSE test methods
> and three other methods which are increasing in use for bare board
> testing.  
> 
> Fabricators are invited to participate in this study.  All data will
> be held as
> confidential and will be presented in a coded format.  Each fabricator
> will be
> presented with their own data set.  The results of the entire study
> will be published
> as an IPC Technical Report.  We are currently limiting the scope of
> the study to 20
> fabricators.  First come, first served.  
> 
> For each participant, I request that a technical contact be given for
> each
> fabrication site and that the test boards chosen conform to the
> following
> requirements.  These are chosen to minimize some sources of
> variability.
> 
>   1. The samples should be from a single facility, single fab line,
> single lot of
> material, single configuration (no mish mash of different factors).
> 2. Board size should be no smaller than 4 x 4 and no larger than 8x10.
> 3. Board should be solder masked (properly cured) and tin-lead coated,
> epoxy-glass
> laminate.
> 4. Test boards should be from the standard process, no special
> attention (e.g. 20
> passes through a cleaner to look better).
> 5. Boards to be wrapped in IPA cleaned aluminum foil or sealed Kapak
> bags for
> shipment.
> 6. All boards sent to CSL.  They will be returned and the tests are
> non-destructive.
> 7. All data will be coded.  Only Wittmer and Pauls will have the code.
> 
> 
> We will need a total of 15 test boards.  If desired, the boards may be
> scrap for
> reasons of misregistration, cracked copper, etc.  It should not be for
> reasons of bad
> mask or mask cure or cleanliness.  The 15 boards will be tested as
> follows:
> 
>   · 3 samples - Standard ROSE per IPC Test Method 2.3.26.1
> · 3 samples - modified ROSE per the proposed IPC Test Method 2.3.25.1
> · 3 samples - ion chromatography per Delco Electronics C-7000 method
> · 3 samples - ion chromatography per IPC Test Method 2.3.28 (CSL
> standard)
> · 3 samples as reserve, possibly for SIR testing later
> 
> The boards should be accompanied by a process history, indicating
> things like solder
> mask used, HASL flux or fusing fluid used, laminate type, etc.  We
> want to know as
> much about the  history as possible.  We understand the proprietary
> nature of many
> fabrication processes.  This will be respected.
> 
> Please contact me or Jack Crawford at IPC ([log in to unmask] OR
> 847.509.9700 x 393), if
> you wish to participate.  Any questions should be directed to me.
> 
> Sincerely,
> 
> Doug Pauls
> Technical Director
> Contamination Studies Laboratories
> 201 East Defenbaugh St.
> Kokomo, IN  46902
> P: 765-457-8095
> F: 765-457-9033
> E: [log in to unmask]
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>                                                      
> 
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