集成电路专业英语 课件 13 Integrated Circuit Packaging

13IntegratedCircuitPackagingPartVIntegratedCircuitPackagingandTestingIntroduction:WhatisICPackaging？ICpackagingprotectsandenclosesthefragilesilicondiewithinaprotectivehousing.Itisthecrucialfinalstepthatturnsadelicatechipintoareliable,usabledevice.Providesmechanicalsupport,electricalconnectivity,andenvironmentalprotection.WhyisICPackagingImportant？Protection&Reliability:Shieldsagainstphysicalandenvironmentaldamage.ElectricalConnectivity:Providespins,leads,orterminalsforPCBconnection.Thermal&PerformanceBenefits:Heatdissipation,miniaturization,andhigh-speedoperation.PrimaryPackageMountingCategoriesThrough-HoleTechnology(THT):LeadsinsertedintodrilledPCBholes.SurfaceMountTechnology(SMT):ComponentsmounteddirectlyonPCBsurface.SMTenableshigherdensity,smallerPCBs,andcompactICs.Through-HolePackagesLeadsinsertedintoPCBholesandsolderedontheoppositeside.Commontypes:SIP(singlerow)andDIP(dualrow).Easyprototypingbutunsuitableforhigh-frequencyapplications.QuadInlinePackage(QIP/QIL)Fourrowsofstaggeredpinsinazigzagconfiguration.Improvessolderingreliabilityandroutingonsingle-layerPCBs.Popularfrom1970s–1990sforearlymicroprocessors.SurfaceMountPackages(SMT)Dominanttechnologyinmodernelectronics.Shortleadsorleadlessdesignsenablehighdensity.Supportscompact,lightweightelectronicproducts.CommonSMTPackageFamilies(Part1)PinGridArray(PGA):Gridofpins,designedforsocketing.FlatPackages:Leadsontwoorfoursides.SOIC:Gull-wingleads,commonformemoryICs.CommonSMTPackageFamilies(Part2)Chip-ScalePackage(CSP):Area≤1.2×diearea.BallGridArray(BGA):Usessolderballsforhighpincount.Excellentelectricalandthermalperformance.AdvancedPackaging:Multi-ChipModules(MCMs)Integratesmultiplediesandcomponentsintoonepackage.EnablesSystem-in-Package(SiP)solutions.Improvesperformance,powerefficiency,andfootprint.PackagingMaterialsCeramic:Highthermalconductivity,hermetic,highcost.Plastic:Lowcost,mostcommonforconsumerelectronics.Metal:BestthermalandEMIperformance,highercost.MorePackagingMaterials&SelectionCriteriaOrganicsubstrates(FR-4):Cost-effective,goodinsulation.Ceramic-metalcomposites:Excellentthermal+electricalproperties.Selectiondependsonprotection,thermal,electrical,andsizeneeds.TheICPackagingProcessFlowMolding:Encapsulatesdieandleadframe.DTFS:Deflash,Trim,Form,Singulation.LeadFinish:Platingforsolderabilityandprotection.KeyInterconnectTechnology:WireBondingConnectsdiebondpadstopackageleads.Usesgold,copper,oraluminumwires.Supportsfrequenciesabove100GHz.Post-Assembly:Testing&Burn-inElectricaltestingverifiesfunctionalityandperformance.Burn-inscreensearly-lifefailuresunderstress.Improveslong-termreliabilitybeforeshipment.SummaryICpackaginge