SEMI G60-94 TEST METHOD FOR THE MEASUREMENT OF

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1、SEMIG60-94N/A©SEMI1994,1996TESTMETHODFORTHEMEASUREMENTOFELECTROSTATICPROPERTIESOFSEMICONDUCTORLEADFRAMEINTERLEAFINGMATERIALS1Purpose4Terminology1.1Thistestmethoddescribesaproceduretodeter-4.1interleaf(forsemiconductorleadframes)ÑAminetheelectrostaticpropertiesofinterleafmateri

2、alspaperorplasticfilmplacedbetweenlayersofsemicon-inÞlmorsheetformbymeasuringthemagnitudeandductorleadframestripstopreventtransformation.polarityofaninducedchargeandthetimerequiredfor4.2electrostaticpropertiesÑForthepurposesofcompletedissipationofthecharge.thisdocument,electro

3、staticpropertiesaredefinedasNote1:Themethodisindependentofvolumeorinsu-theabilityofamaterial,whengrounded,todissipatealationresistivities.chargeinducedontothesurfaceofthatmaterial.2Scope5SummaryofMethod2.1Thistestmethodissuitableforallinterleafmate-Themethodinvolveschargingthe

4、interleafmaterialtorialsandmaybeusedbyvendorsatoutgoinginspec-ahighvoltageandobservingthetimerequiredforthetion,orcustomersatincominginspection.chargetobedissipatedusinganelectrometer.3ApplicableDocuments6SigniÞcance3.1RelatedDocumentsÑThefollowingdocuments6.1Thisprocedureeval

5、uatestheelectrostaticbuildprovideadditionalinformationfortestingelectrostaticupanddissipationpropertiesoftheinterleafmaterialsproperties.ThetestmethoddescribedinthisdocumentwhichmayaffectthereliabilityandefÞciencyofisbasedonFED-STD-101C.devices.3.1.1ElectronicIndustriesAssocia

6、tion17InterferencesEIA-541ÑPackagingMaterialsStandardsforESD7.1TheinterleafmaterialandtheleadframesmustSensitiveItemsonlybetouchedwhilewearingdouble-layergloves2.1.2FederalSpeciÞcations2withpolyethyleneouterglovesinordertoavoidcon-taminationwhichmaychangetheelectrostaticproper

7、-FED-STD-101CÑTestProceduresforPackagingties.Items37.2ThetestisnotvalidiftheinterleaÞngmaterialis2.1.3JISSpeciÞcationsdusty.JISK6911ÑTestingMethodsforThermosettingPlas-tics8EquipmentJISL1094ÑTestingMethodsforElectrostaticPro-8.1Aluminumpanelmeasuring127mm´76.2mm´pensityofWoven

8、andKnittedFabrics3.2mm(5"´3"´1/8").8.2Highvoltagesource,0to15