Technical Data Sheet LOCTITE 3621 - tdsna.henkel.com

1 TechnicalDataSheet LOCTITE3621 January-2014 PRODUCTDESCRIPTIONLOCTITE3621providesthe followingproductcharacteristics:Technolo gyEpoxyChemicalTypeEpoxyAppearance(uncur ed)RedviscousgelLMSC omponentsOne component - requiresnomixingCureHeatcureApplicationS urfacemountadhesiveKeySubstratesSMDcompo nentsto PCBO therApplicationAreasSmallpartsbondingDis penseMethodSyringeDispense SpeedVeryhigh25,000- 50,000dots/hWetStrengthHighLOCTITE3621 ,highdotprofile,highwetstrengthandgoodel ectricalcharacteristicsarerequired. Particularlysuitedwheredispensespeedsgre aterthan35,000dots/harerequired. LOCTITE3621hasbeenusedsuccessfullyinlead freeprocesseswithwaterandalcoholbasedflu xesunderconditionsoutlinedin @ 25 ,25 C,PaCone& PlateRheometer:HaakePK100,M10/PK1 2 Cone130 to280 LMSC assonViscosity @25 C,Pa sCone& PlateRheometer:HaakePK100,M10/PK1 2 to3 ParticleSize, m<150 FlashPoint- PK100,M10/PK12 Conesystem ata shearrateof2 s-1 whichisrepresentativeoftheshearrateinthe dispensenozzle.

2 Increasedcabinornozzletemperatureinthe30 Cto35 , Pa sTemperature, C15012510075502502025303540 TYPICALCURINGPERFORMANCER ecommendedconditionsforcuringareexposure toheatabove100 C(typically90-120seconds@150 C). , practice, measuredon1206capacitors @22 C,testedaccordingto IPCSM817, of Full StrengthTime at Cure Temperature (seconds)1007550250030609012015018021024 0270300150 C125 C100 CIsothermalDSCC onversion5 minutes@ 125 C,% 90 LMSTYPICALPROPERTIESOFCUREDMATERIALC uredfor 30 minutes @150 CPhysicalProperties:Coefficientof ThermalExpansion, ISO11359-2, K-1:TemperatureRange25 Cto 70 C100 10-6 TemperatureRange90 Cto 150 C218 10-6 TDSLOCTITE3621, January-2014 Coefficientof ThermalConductivity, ISO8302,W/(m K) , BS5350-B1@25 C,g/cm , ASTMD 4065, C110 Electrical Properties:VolumeResistivity,IEC60093, 1015 SurfaceResistivity,IEC60093, 52 1015 DielectricBreakdownStrength,IEC60243-1, kV/mm40 ElectrolyticCorrosion,DIN53489A - DissipationFactor,IEC60250 , , 5 minutes @125 CPull-offStrength,SiemensnormSN59651:C-1 206onbareFR4board N 50 (lb) (13)TorqueStrength,IPCSM817, :C-1206onbareFR4board N mm 60 ( ) ( )Curedfor 3 minutes @150 CPush-offStrength:C-1206onbareFR4board N 27 LMS (lb) ( )Curedfor 30 minutes @150 CLapShearStrength,ISO4587:Mildsteel (gritblasted) N/mm 15 LMS (psi) ( 2,175)Bondstrengthachievedinpracticewill varyconsiderablydepending on theSMDcomponenttype,adhesivedotsizeandth etype, RESISTANCEC uredfor 30 minutes @150 CLapShearStrength,ISO4587.

3 Mildsteel (gritblasted)HotStrengthTestedat temperature% Initial Strength at 22 CTemperature, C120100806040200255075100125150175200225 250 ResistancetoHotSolderDipCuredfor 90 seconds @150 CHotSolderDip,IPCSM817,TM-650 ,Pass/Fail:R-1206onbareFR4board:Supporte d60secondsabovesolderbath@260 Canddippedfor10seconds PassSurfaceInsulationResistance(SIR)LOCT ITE3621meetshighstandardsofreliabilityan denvironmentalresistance,suchasSIRtestin gunderelectricalbiasinhightemperatureand humidity. (IPCB25B-comb) C,30minutesAppliedBiasVoltage/TestVoltag e16V/250 VRelativeHumidity85%TestTemperature85 CTestDuration1000hoursInitalCombResistan ce@23 C,50% , 9 1012 FinalCombResistance@85 C,85% , 375 106 FinalCombResistance@28 C,50% , 1012 ResistancetoLeadFreeSolderLOCTITE3621can beusedin leadfreewavesolderwithbothwaterbasedanda lcoholbasedfluxesLeadFreeSolderTestCondi tionsFluxTypesMulticoreMF200(alcoholbase d)andMulticoreMF300(waterbased)WaveCondi tion100 Cpre-heatwithdualwaveat 260 thewaveGENERALINFORMATIONF orsafehandlinginformationonthisproduct,c onsulttheSafetyDataSheet(SDS).

4 Americas+ + + , January-2014 suppliedde-aeratedin a rangeofready-to- refrigeratortheadhesive mustbeallowedtoequilibrateto roomtemperaturebeforeuse,typically2 to4 withotheradhesiveresiduesbyensuring dispensenozzels, solventsforlongperiodsof ,time, valuebetween 30 Cto35 Cforoptimumresults, withisopropanol,MEKoresterblendssuchasLO CTITE 7360 .LoctiteMaterialSpecificationLMSLMS dated July-19, 2002. Testreportsforeachbatchareavailableforth eindicatedproperties. LMStestreportsincludeselectedQCtestparam etersconsideredappropriatetospecificatio nsforcustomeruse. Additionally,comprehensivecontrolsareinp lacetoassureproductqualityandconsistency . Specialcustomerspecificationrequirements maybecoordinatedthroughHenkel drylocation. : 2 Cto8 C. Storagebelow2 Corgreaterthan8 Ccanadverselyaffectproductproperties.

5 Afterremovalfromtherefrigerator,LOCTITE3 621hasafloorlifeatroomtemperature(22 Cto28 C)of 1 month. Materialremovedfromcontainersmaybecontam inatedduringuse. Donotreturnproducttotheoriginalcontainer . , ( Cx )+ 32= FkV/mmx V/milmm/ inches m/ milN x lbN/mmx lb/inN/mm x 145= psiMPax 145= psiN m x lb inN mx lb ftN mm oz inmPa s= cPNote:TheinformationprovidedinthisTechn icalDataSheet(TDS) ,therefore,notliableforthesuitabilityofo urproductfortheproductionprocessesandcon ditionsinrespectofwhichyouusethem, confirmsuchsuitabilityof respectoftheinformationin theTechnicalDataSheetoranyotherwrittenor oralrecommendation(s)regardingtheconcern edproductis excluded,exceptif ,HenkelElectronicMaterialsNV,HenkelNeder landBV,HenkelTechnologiesFranceSASandHen kelFranceSApleaseadditionallynotethefoll owing: IncaseHenkelwouldbeneverthelessheldliabl e,onwhateverlegalground,Henkel sliabilitywillin noeventexceedtheamountof , applicable.

6 TheinformationprovidedinthisTechnicalDat aSheet(TDS) ,therefore,notliableforthesuitabilityofo urproductfortheproductionprocessesandcon ditionsinrespectofwhichyouusethem, confirmsuchsuitabilityof respectoftheinformationin theTechnicalDataSheetoranyotherwrittenor oralrecommendation(s)regardingtheconcern edproductis excluded,exceptif ,ResinTechnologyGroup,Inc.,orHenkelCanad aCorporation, 'sresponsibilitytodeterminesuitabilityfo rtheuser'spurposeofanyproductionmethodsm entionedhereinandtoadoptsuchprecautionsa smaybeadvisablefortheprotectionofpropert yandof personsagainstanyhazardsthatmaybeinvolve din ,HenkelCorporationspecificallydisclaimsa llwarrantiesexpressedorimplied,including warrantiesofmerchantabilityorfitnessfora particularpurpose,arisingfromsaleoruseof HenkelCorporation , ,usingthisdataasa ,alltrademarksinthisdocumentare trademarksof denotesatrademarkregisteredin + + +