西门子可靠性培训资料知识讲解.ppt

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1、西门子可靠性培训资料ProductReliabilityAssuranceProcessReference:Siemensstandard;inagreementwithinternationalstandardsIEC61709productdefinitionproductdevelopmentproductdeliveredrequirementsalignedwithtechnologybasisfailurerateallocationtoindividualcardsinvolvementofcomponentengineering&QAca

2、rdfailureratesonbasisofpartslistscomponentratingbydesignnew&criticalcomponentsspecificationnewcomponents&supplierauditsinproductionfailurecontrolfieldreturnanalysis&thresholdmonitoringconservativedatabasedonpredictedvaluesregularcomponentsupplierauditsReliabilityControlandI

3、mprovementCross-functionalteamestablishedtoinstallfocusedprogramCloseinteractionwiththesupplierfordesign,technologyandprocessEarlyfailuremonitoringandfeedbackindevelopmentphaseExtendedtestingincludingtemperaturecyclinginproductionDetailedfailuremonitoringinproductionforearlycorre

4、ctiveactionPredictedFITratesvs.fieldreturnFITratesFieldreturnFITrateinherentlyis(!)lowerthanpredictedFITratesparepartsdon’tcontributetoFMAnon-installedequipmentatcertaincarrierslowchannelcountformanyyearstemperatureforFITestimationprobablyhigherthaninrealitymargin(e.g.,duetolowch

5、annelcount,lowPMD,BOL)canmaskperformancedegradationFunctionalPartitionofOLIOpticalamplificationviaEDFAgainblockPumpdiodesMonitordiodesEDF-HeaterInternalGainSwitchOSCsplittingfunctionsasAdd/DropoftheOSCchannelusingwavelengthselectivecouplersSplittingofmonitorsignalsattheinputandou

6、tputportandatintermediatemeasurementpointsSpectralshapingofthesignalusingaVOAforsettingtheEDFAtoanoptimizedoperatingpointGTCfortiltcompensationOpticalmonitorportsatinputandoutputforsignalsupervisionAPSDcircuitryGainControlandSupervision(DSP,on-boardprocessor)Electricalcomponentsf

7、orcontrolandpowersupplyMechanicsincludingPCB012345678910111213OperatingtimeTinyearsFailureratelEarlyfailuresltotalWear-outfailureThebathtubcurve:FailurerateslviatimeTRandomfailureForthefieldreplaceableHW-unitsandtheircomponentsthefailureratelcouldbeonlypredictedbyrandomfailures!T

8、heunitofthefailureratelisaFIT(FailureinT