Yield and quality control

Which technique identifies possible failure modes in a product or process, evaluates their effects and severity, and takes countermeasures in advance?

  1. APareto chart
  2. BHistogram
  3. CFMEA (failure mode and effects analysis)
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Answer: C. FMEA (failure mode and effects analysis)

FMEA lists possible failure modes for each part or process step, evaluates the severity of their effects, frequency of occurrence and ease of detection, and decides which items to address first. As a method for preventing problems before they occur, it is used in design and process ramp-up.

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More Yield and quality control questions

  1. Which chart plots pairs of two characteristic values to examine their correlation?
  2. What is it called that shows yield improving over time as defect causes are analyzed and addressed after a new process is launched?
  3. What is the purpose of evaluating manufacturing variation separately by factor, such as lot-to-lot, wafer-to-wafer and within-wafer?
  4. Which correctly describes the idea behind the quality management activity called 'Six Sigma'?
  5. On the same wafer, why does making chip area smaller greatly increase the number of good chips per wafer?