SEMI G75.1-0698 TEST METHOD FOR MEASUREMENT OF IONIC

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1、SEMIG75.1-0698C©SEMI1998TESTMETHODFORMEASUREMENTOFIONICIMPURITIESINLEADFRAMETAPE1SummaryofMethodASTME70ÑStandardTestMethodforpHofAque-ousSolutionswiththeGlassElectrode1.1Ionicimpuritiesareextractedfromsampletapebywaterat100¡Cor121¡Candquantitativelyanalyzed2.3JISSpeciÞcations2byionchrom

2、atographyandßamephotometryorJISK0121ÑGeneralRulesforAtomicAbsorptionatomicabsorptionspectrometry.ThepHandelectricalSpectrochemicalAnalysesconductivityoftheextractedsolutionsarealsomea-sured.JISZ8802ÑMethodforDeterminationofpHofAqueousSolutions1.2Ifsampletapeneedsthecurebeforetheextracti

3、on,vendershouldinformthecustomerofthenecessityof3Interferencescuringandreporttheimpuritydataaftercure.3.1Allthesamplepreparationsandmeasurements1.3Ionchromatographyisusedtodeterminethepres-mustbecarriedoutincleancontainerswhichhaveenceandconcentrationofthefollowingionicspecies:beenwashe

4、dindeionizedwaterinordertoreduceanyNa+,NH+,K+,NO-,Cl-,Br-,SO2-,PO3-.4344spuriousreadings.1.4Flamephotometryoratomicabsorptionspectrom-3.2ElectrodesandsyringesmustbesimilarlycleanedetryisusedtodeterminetheconcentrationofNa+andbeforeeachtest.K+ions.3.3Contaminationfromthesamplingprocessma

5、y1.5pHandconductivitymeasurementsarealsode-alsoaffecttheresults.scribed.4Equipment2ReferencedDocuments4.1IonExtractionVessels-ParrbombwithTeßonNOTE:Aslistedorrevised,alldocumentscitedshallliner.bethelatestpublicationsofadoptedstandards.4.2Ionchromatographforanionandcationanalysis2.1SEMI

6、Standards(seeSEMIG59).SEMIG29ÑTestMethodforTraceContaminantsin4.3Flamephotometeroratomicabsorptionspectrom-MoldingCompoundseter.SEMIG59ÑTestMethodforMeasurementofIonic4.4Standardsolutionpreparationvessels,balanceandContaminationonLeadframeInterleaÞngandtheCon-volumetricdispensers(seeSEM

7、IG29andSEMIG59).taminationTransferredfromtheInterleaÞngtotheLeadframes4.5pHmeter.2.2ASTMStandards14.6Microconductivitycellandmeter.ASTMD1125ÑStandardTestMethodsforElectrical5ReagentsandMaterialsConductivityandResistivityofWater5.1Deionizedwater,conductivityoflessthan1.0µS/ASTMD