Abstract

An adaptation of Six Sigma called Design for Six Sigma (DfSS) can prevent many process problems. DfSS differs from ordinary process design in that it focuses less on ideal performance and more on robustness and mistake-proneness, it is driven by added value for the stakeholders rather than by technology, and it incorporates significant testing and feedback in early phases to encourage designers to focus on weaknesses rather than improving strengths. Rather than folowing the define, measure, analyze, improve, control methodology of ordinary Six Sigma, DfSS uses the define, identify, design, optimize, verify (DIDOV) methodology. A detailed example of DfSS application in a circuit board cleaning process is presented.