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Document:W0301004,Rev:D©2008WAYONCorporation(TopView)WS2.8-4LVUTransientVoltageSuppressorFeaturesz400Wattspeakpulsepower(tp=8/20μs)zProtectsTwoLinePairs(Fourlines)zLowcapacitancezLowleakagecurrentzLowoperatingandclampingvoltagezSolid-statePunchthroughAvalancheTVSprocesstechnologyIECCOMPATIBILITY(EN61000-4)zIEC61000-4-2(ESD)±15kV(air),±8kV(contact)zIEC61000-4-4(EFT)40A(5/50ns)zIEC61000-4-5(Lightning)24A(8/20μs)MechanicalCharacteristicsApplicationszJEDECSO-8packagezMoldingcompoundflammabilityrating:UL94V-0zMarking:MarkingCodezPackaging:TapeandReelzRoHS/WEEECompliantzSwitchingSystemszWAN/LANEquipmentzDesktops,Serves,Notebooks&Handheldsz10/100EthernetzBaseStationszAudio/VideoInputsSchematic&PINConfigurationSO-8©2008WAYONCorporation（tp=8/20μs）seeFigure1&Figure2PPP400WattsPeakPulseCurrent（tp=8/20μs）IPP24ALeadSolderingTemperatureTL260(10sec)°COperatingTemperatureTJ-55to+125°CStorageTemperatureTSTG-55to+150°CElectricalParameters(T=25℃)ElectricalCharacteristics(T=25℃)WS2.8-4LVUParameterSymbolConditionsMinimumTypicalMaximumUnitsReverseStand-OffVoltageVRWMSeeNote12.8VPunch-throughVoltageVPTIPT=2μA,SeeNote13.0VReverseLeakageCurrentIRVRWM=2.8VSeeNote11μASnap-BackVoltageVSBISB=50mA,SeeNote12.8VSymbolParameterIPPMaximumReversePeakPulseCurrentVCClampingVoltage@IPPVRWMWorkingPeakReverseVoltageIRMaximumReverseLeakageCurrent@VRWMVPTPunch-throughBreakdownVoltage@ITVSBSnap-BackVoltage@ISBISBSnap-BackCurrentIPTTestCurrentVPTFForwardPunch-throughBreakdownVoltage@IFIPTFForwardTestCurrent©2008WAYONCorporation(Cont.)ParameterSymbolConditionsMinimumTypicalMaximumUnitsClampingVoltage(Note1)VCIPP=2A,tp=8/20μsSeeNote16VClampingVoltageVCIPP=5A,tp=8/20μsSeeNote19.5VClampingVoltageVCIPP=24A,tp=8/20μsSeeNote117VJunctionCapacitanceCjVR=0V,f=1MHzSeeNote15pFSteerDiodesReverseBreakdownVoltageVBRIT=10µASeeNote450VReverseLeakageCurrentIRVRWM=2.8VSeeNote41μAForwardVoltage(Note3)VFIF=1ASeeNote52VNOTES：1.Devicemeasuredbetweenpin1to2,pin3to4,pin5to6andpin7to8.2.The8/20μstestpulsewaveisshowninfigure3,andtheclampingvoltagevs.IPPisshowninfigure4.3.TheJunctionCapacitancevs.ReverseVoltageisshowninfigure5.4.EachSteerDiodeintegratedintheWS2.8-4LVUreverselyconnectedwithaTVSDiodeinseries5.TheForwardVoltagevs.ForwardCurrentforSteerdiodeisshowninfigure6.©2008WAYONCorporation©2008WAYONCorporation(ESD),ElectricalFastTransients(EFT)andtertiarylightningeffects.Thisproductisofferedinaunidirectionalconfigurationandprovidesbothcommon-modeanddifferential-modeprotection.UnidirectionalCommon-modeProtectionTheWS2.8-4LVUprotectsfourlinesinacommon-modeconfiguration.zPin1isconnectedtoLine1.zPin3isconnectedtoLine2zPin5isconnectedtoLine3.zPin7isconnectedtoLine4zOtherPinsareconnectedtoground.BidirectionalCommon-modeProtectionTheWS2.8-4LVUdeviceprovidetwolinesofbidirectionalprotectioninacommon-modeconfiguration.zPin1&Pin8areconnectedtoLine1zPin4&Pin5areconnectedtoLine2zOtherPinsareconnectedtoground.BidirectionalDifferential-modeProtectionTheWS2.8-4LVUdeviceprovidefourlinesofbidirectionalprotectioninadifferential-modeconfiguration.zPin1&Pin8isconnectedtoLine1zPin2&Pin7isconnectedtoLine2zPin3&Pin6isconnectedtoLine3zPin4&Pin5isconnectedtoLine4zLine1&Line2composeLinePair1,Line3&Line4composeLinePair2WS2.8-4LVU©2008WAYONCorporation©2008WAYONCorporation(Cont)“quad”TransformerRJ45TPOPATPONATPOPBTPONBTPOPCTPONCTPOPDTPONDGIGABITETHERNETTRANSCEIVERWS2.8-4LVU12345678WS2.8-4LVU12345678GigabitEthernetProtectionCircuit©2008WAYONCorporation–SO-8PACKAGEOUTLINEDIMENSIONSSYMBOLINCHESMILIMETERMINMAXMINMAXA0.0540.0681.351.75a10.0040.0080.100.25a20.0500.0601.251.50D0.1890.1964.805.00F0.1500.1573.804.00E0.2290.2445.806.20e0.05BSC0.05BSC1.27BSC1.27BSCL0.0160.0490.401.250θ0。10。0。10。DIMENSIONSDIMINCHESMILLIMETERSC0.2055.20G0.1604.06P0.0501.27X0.0150.38Y0.0451.14Z0.2917.40Notes1.Thislandpatternisforreferencepurposesonlyconsultyourmanufacturinggrouptoensureyourcompany'smanufacturingguidelinesaremet.2.Referenceipc-sm-782a..MarkingCodesPartNumberWS2.8-4LVUMarkingCodeWS2.8-4LVUCONTACTINFORMATIONSHANGHAICHANGYUANWAYONCIRCUITPROTECTIONCO.,LTD.No.1001,Shiwan(7)Road,PudongDistrict,Shanghai,P.R.China.201202Tel:[phone]Fax:[phone]Email:[e-mail]: