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October 2004

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TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
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Tue, 26 Oct 2004 00:51:53 EDT
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Suggest the following:
1. Establish the conditions the PWA will experience in the 'end use
environment'.
2. Try to mimic it as closely as possible in a well-accepted SIR regimen. For
no clean, try the John Sohn SIR conditions so the residues don't evaporate
and confound the results. [Doug Pauls, please add these to the discussion.]
3. Test PWAs prepared and soldered under the same conditions as the SIR
boards for residual ionics.
4. When you find SIR results that meet your end use environment, matching
ionics level will serve as a reasonable process monitoring level.

Bill Kenyon
Global Centre Consulting
3336 Birmingham Drive
Fort Collins, CO   80526
Tel: 970.207.9586   New Cell: 970.980.6373

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