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 Daryl Santos PhD

• An Effective Design of Experiment Strategy to Optimize SMT Processes

  by Dr. Ronald C. Lasky, Daryl Santos PhD

  It is now widely accepted that using designed experiments is the most effective way to optimize surface mount technology (SMT) processes. This situation begs the question “what is an effective strategy in implementing this powerful tool?” This paper will present such a strategy that incorporates Taguchi’s approach for screening, full factorial analysis for optimization and central composite design for precise modeling. We will present these techniques using MINITABTM Release 13 statistical software and printed circuit board industry applications.

  pb-free, lead-free, design of experiments, DOE, line optimization, continuous improvement, process modeling, process improvement

  [Permanent Link to this Paper]

  Posted on 31 Mar 2010

• Leaded and Lead-Free Solder Paste Evaluation Screening Procedure

  by Aniket A. Bhave, Daryl Santos PhD, Dr. Ronald C. Lasky

  Numerous studies have shown that greater than 60% of end of line defects in SMT assembly can be traced to solder paste and the printing process. Reflowing adds another 15% or so. In light of this fact, it is surprising that no simplified procedure for solder paste evaluation has been documented. This paper is about such a procedure.

  pb-free, lead-free, stencil printing, solder paste, solder paste evaluation

  [Permanent Link to this Paper]

  Posted on 31 Mar 2010

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