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1、st21CenturyProductAnalysisPrinciples/Procedures-12Principles/Procedures...................................................................................22.1PhilosophyofFailureAnalysis.............................................................22.2ProductAnalysisFlowcharts.......................
2、.........................................42.2.1Top-LevelFlowcharts......................................................................42.2.2Second-TierFlowcharts....................................................................82.3AnalysisandTechniqueOrders.....................................
3、.....................162.4ContractingOutforFailureAnalysisWork........................................172.5References.........................................................................................18?2002,Semitracks,Inc.stPrinciples/Procedures-221CenturyProductAnalysis2Principles/Procedur
4、es2.1PhilosophyofFailureAnalysisFailureAnalysisrequiressemiconductordesignandprocessingknowledge,logicalthinking,anddetectiveskills.Inmanyrespects,thejoboffailureanalystismuchlikethejobofadetective.Thefailureanalystmustsearchforcluesandevidenceastowhatmighthavecausedthecircuittofailthewayitdid.Eac
5、handeverycluethattheanalystuncovers(throughtestingorexamination)maypotentiallybeimportant.Thisrequiresthattheanalystbeorganizedanddevelopastorythatmakessense.Inotherwords,thefailuremechanismfoundmustcorrelatetotheobservedfailuremode.Thereareseveralphilosophicalprinciplesthatcanbeappliedtothesubjec
6、toffailureanalysis.Thefirstandmostimportantprincipleisthatiftheanalysisistobeundertaken,itshouldbedonecorrectly.Thefailureanalystshouldbemethodicalinhisorherapproach,makingsurethattheappropriatelevelofdetailisperformed,giventheimportanceoftheanalysis.Animportantanalysis,i.e.,ananalysiswherethecaus
7、eoffailuremustbeknown,shouldbeperformedwiththecareanddetailnecessarytoensurethatthefailuremechanismisdetermined.Thesecondprincipleisthatthefailuremodeshouldalwaysfirstbereproduced.Ifthefailuremodecannotbereproduc
