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Achieving Low ESR Polymer Capacitors

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KEMET Electronics Corp has implemented several process and material improvements in order to improve the surface mount (SMT) performance of low ESR polymer  capacitors (KO-CAP). This includes large case size (up to 7343-43) capacitors with ESR as low as 5 m[ohm].

Six Sigma methodologies (DMAIC: define-measure-analyze-improve-control) were used to structure the improvement process.

This whitepaper describes

  • the project goals (define phase)
  • new measurement techniques that had to be developed (measure phase)
  • the conceptual model to explain SMT failures (analyze phase)
  • process and material improvements (improve phase), and
  • new control measures put in place (control phase)

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