White Papers

Check the box next to each paper you want to download. You may download as many papers as you wish. After selecting papers and completing the contact information form on this page, the paper(s) will be e-mailed to you at the e-mail address you provide.

Papers by Mike Bixenman D.B.A.

• Ionic Cleanliness Testing Research of Printed Wiring Boards for Purposes of Process Control

  by Mike Bixenman D.B.A., Steve Stach, Dr. Ning-Cheng Lee

  Ionic Cleanliness testing machines are designed to determine the total ionic content extractable from the printed wiring board for purposes of process control. The conductivity of the extract solution is measured and the results are expressed as sodium chloride equivalence per unit area. The problem with this method is two fold: 1.) Many of today’s low residue flux and lead-free flux residues are not soluble in the extract solution. 2.) Contamination of concern is with site specific components, from which contamination does not correlate to the area of concern. The purpose of this study is to research low residue and lead-free flux structures, identify solvent compositions that will dissolve these residue types, and offer options for performing both bulk and site specific ionic cleanliness testing methods.

  lead-free, Cleaning, flux residue, flux, soldering, solder, solder paste, SMT

  [Permanent Link to this Paper]

  Posted on 1 Jan 2009

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