Asisknowntoall,SMTThedefectsinprocessinginclude85%Inthesolderpasteprintingprocess,ifagoodsolderpasteprintingeffectcanbeguaranteedduringthesurfacemounttechnology(SMT)processing,thestraight-throughrateandtheyieldratewillbemaximized.AtpresentmtInthesurfacemounttechnology(SMT)processingplants,thecoatingfunctionofautomaticprintingmachineshasbasicallybeenfullyrealized.Thisentirefunctionhelpsmaintaintheconsistencyofproductstandards,therebyreducingthefluctuationsinproductqualitycausedbyhumanerrors.Suchanimportantprocess,it......
Withtheimprovementofhigh-endmaterialsandprocessesnowadays,aswellasPCBThedesignandchipmanufacturingcapabilitiesaregettinghigherandhigher,thevolumeandsizeofcircuitboardsaregettingsmallerandsmaller,buttheirfunctionsareincreasing.ThenthecoreBGA,QFNItisconstantlyincreasingonthecircuitboard.TheninmtTherewillbealargenumberofqualityissuesinthesurfacemounttechnology(SMT)stage.Now,ShenzhenJJYSolderPasteManufacturerwillexplainthem1,PCBThesurfacemirrorlayer.PCBTheinfluenceofthesurfacelayeronthevoidsismainlyrelatedtowetting......
AsthevolumeoftheproductbecomessmallercaThecircuitboardismorecompact.mtMoreandmoresurfacemounttechnology(SMT)processingfactoriesarefacingtheproblemofprecisesoldering.Forinstance,bridging.Acommondefectisthatwhenthesolderflowsdirectlyontheconnectorduringhigh-temperaturesoldering,itcausesbridging.BridgeconnectionsmayoccurinmtDifferentstagesoftheprocessingprocedure.Now,ShenzhenJJYSolderPasteManufacturerwillexplainthereasonsforbridgingasfollows:1,PCBDesignissue:PCBPlacementoflargerandheaviercomponents......
Withthesteadydevelopmentofdomesticscienceandtechnologyinrecentyears,allindustrieshaveembarkedonthepathofintelligenceandautomation,andthesolderingindustryisnoexception.Forexample,fullyautomaticSMTSolderpasteprintersarewidelyfavoredbyvariouscountriesduetotheiradvantagesofconvenientoperationandhighspeedSMTWelcomefromthemanufacturer.Sure.Fullyautomatic.SMTSolderpasteprintersarenotwithoutdrawbacks.Whensomeminorproblemsoccurwiththemachine,duetoitsfastprintingspeed,bythetimetheyarediscovered,alargenumberofdefectiveproductsmayhavealreadybeenproduced.Incontrast......
inPCBADuringthemanufacturingprocess,duetoSMTSomereasonsduringtheprocesswillbePCBItisverycommonforsomeundesirablephenomenatobeleftonit,suchastinbeads.TinbeadsrefertoinSMTSmallsphericalorpunctatesolderthatappearsonthesolderpadsorthemetallayeronthebackafterthecircuitboardisassembled.Ifthesetinbeadsarenotdealtwith,itwillleadtoequipmentfailureandshortentheservicelifeofthecircuitboard.Next,ShenzhenJJYSolderPasteManufacturerwilldiscussSMTAftersolderpastesolderingPCBWhatshouldbedonewhentherearetinbeadsontheboardsurface......
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