Sigma, PPM, 合格率Yield不良率(DPMO)PPM对照表.docx

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1、SigmaPPMYie1d对照表合格率Yie1d百万分之DPMOSigma水平流行年代(%)PPMQuaIityStandardsacceptedinPeriods6.68933200O8.4559154500.12510.568944000.2513.038697000.37515.878413000.519.088092000.62522.667734000.7526.5957340500.87535.4356456501.125II40.135987001.2545.0255497501.375505000001554.9754502501.62559.874013001.7564.56

2、53543501.87569.1530850021970$73.4052659502.12577.342266002.2580.921908002.37584.131587002.586.971303002.62589.441056002.7591.545845502.87593.326680031980s94.79521003.12595.99401003.2596.96304003.32597.73227003.598.32168003.62598.78122003.7599.128S003.87599.3862004Ear1y1990s99,56543504.12599.7304.259

3、9.79520504.37598.8713004.599.919004.62599.946004.7599.964004.87599.9772305Mid1990s99.9821805.12599.9871305.2599.992805.37599.997305.599.9976723.355.62599.9983316.75.7599,99910.055.87599.999663.462000s不考虑假定均值与公差中心偏移15gmaDPMUYie1d1.5500.00050%3.0066.80093.32U%3.5。Z2.UUy.j%4.ob.2i99.3/90%4.501.35099.8650%5.0023U99.977U%b.J.4yy.yyybb%