JESD22-B103B

JEDECSTANDARDVibration,VariableFrequencyJESD22-B103-B(RevisionofJESD22-B103-A)JUNE2002JEDECSOLIDSTATETECHNOLOGYASSOCIATIONNOTICEJEDECstandardsandpublicationscontainmaterialthathasbeenprepared,reviewed,andapprovedthroughtheJEDECBoardofDirectorslevelandsubsequentlyreviewedandapprovedbytheJEDEClegalcounsel.JEDECstandardsandpublicationsaredesignedtoservethepublicinterestthrougheliminatingmisunderstandingsbetweenmanufacturersandpurchasers,facilitatinginterchangeabilityandimprovementofproducts,andassistingthepurchaserinselectingandobtainingwithminimumdelaytheproperproductforusebythoseotherthanJEDECmembers,whetherthestandardistobeusedeitherdomesticallyorinternationally.JEDECstandardsandpublicationsareadoptedwithoutregardtowhetherornottheiradoptionmayinvolvepatentsorarticles,materials,orprocesses.BysuchactionJEDECdoesnotassumeanyliabilitytoanypatentowner,nordoesitassumeanyobligationwhatevertopartiesadoptingtheJEDECstandardsorpublications.TheinformationincludedinJEDECstandardsandpublicationsrepresentsasoundapproachtoproductspecificationandapplication,principallyfromthesolidstatedevicemanufacturerviewpoint.WithintheJEDECorganizationthereareprocedureswherebyanJEDECstandardorpublicationmaybefurtherprocessedandultimatelybecomeanANSI/EIAstandard.Noclaimstobeinconformancewiththisstandardmaybemadeunlessallrequirementsstatedinthestandardaremet.Inquiries,comments,andsuggestionsrelativetothecontentofthisJEDECstandardorpublicationshouldbeaddressedtoJEDECattheaddressbelow,orcall(703)907-7559or©JEDECSolidStateTechnologyAssociation20022500WilsonBoulevardArlington,VA22201-3834Thisdocumentmaybedownloadedfreeofcharge;howeverJEDECretainsthecopyrightonthismaterial.Bydownloadingthisfiletheindividualagreesnottochargefororreselltheresultingmaterial.PRICE:PleaserefertothecurrentCatalogofJEDECEngineeringStandardsandPublicationsorcallGlobalEngineeringDocuments,USAandCanada1-800-854-7179,International(303)397-7956PrintedintheU.S.A.AllrightsreservedPLEASE!DON’TVIOLATETHELAW!ThisdocumentiscopyrightedbyJEDECandmaynotbereproducedwithoutpermission.Organizationsmayobtainpermissiontoreproducealimitednumberofcopiesthroughenteringintoalicenseagreement.Forinformation,contact:JEDECSolidStateTechnologyAssociation2500WilsonBoulevardArlington,Virginia22201-3834orcall(703)907-7559JEDECStandardNo.22B103-B-i-TestMethodB103-B(RevisionofB103-A)VIBRATION,VARIABLEFREQUENCYForewordThevariablefrequencyvibrationtestisperformedtodeterminetheeffectofvibration,withinaspecifiedfrequencyrange,ontheinternalstructuralelements.JEDECStandardNo.22B103-BTestMethodB103-B-ii-(RevisionofB103-A)JEDECStandardNo.22-B103-BPage1TestMethodB103-B(RevisionofB103-A)VIBRATION,VARIABLEFREQUENCY(FromJEDECBoardBallot,JCB-02-32,formulatedunderthecognizanceoftheJC-14.1SubcommitteeonReliabilityTestMethodsforPackagedDevices.)1ScopeThismethodisintendedtoevaluatecomponent(s)foruseinelectricalequipment.Itisintendedtodeterminetheabilityofthecomponent(s)towithstandmoderatetoseverevibrationasaresultofmotionproducedbytransportationorfieldoperation.Vibrationofthistypemaydisturboperatingcharacteristics,particularlyiftherepetitivestresscausesfatigue.Thisisadestructivetestintendedforcomponentqualification.Itisnormallyapplicabletocavity-typepackages.2ApparatusApparatusforthistestshallincludeequipmentcapableofprovidingtherequiredvariablefrequencyvibrationatthespecifiedlevelsandthenecessaryopticalandelectricalequipmentforpost-testmeasurements.3Termsanddefinitions3.1RMSaccelerationTherootmeansquareaverageoftheaccelerationintervalofthedynamicmotion.3.2PeakaccelerationThemaximumoftheaccelerationintervalofthedynamicmotion.3.3LogarithmicsweepContinuouslyvaryingthefrequencyinamannersuchthatwithinanyportionofthefrequencyrange,afixednumberofdecadesistraversedinafixedlengthoftime.3.4OctaveAmeasurementofthespacingoffrequencycharacterizedbyadoublingoffrequency.Thenumberofoctaves,N,betweentwofrequencies,f1f2,isgivenbyN=(logf2/f1)/log2.3.5DecadeAmeasurementofthespacingoffrequencycharacterizedbyatenfoldincreaseoffrequency.Thenumberofdecades,D,betweentwofrequencies,f1f2,isgivenbyD=(logf2/f1)/log10.JEDECStandardNo.22-B103-BPage2TestMethodB103-B(RevisionofB103-A)3Termsanddefinitions(cont’d)3.6DecibelmeasurementofPSD,dBAmeasurementoftheratioRofonelevelofpowerspectraldensity,s1,relativetoanotherreferencelevel,s2,givenbytheformulaR=20log(s1/s2)/log10.R=6dBisapproximatelyadoublingofpowerspectraldensityfromoneleveltoanother.3.7Powerspectraldensity,PSDAmeasurementoftheintensityofaccelerationpowerperunitfrequency,inunitsofGsquaredperHz.3.8ServiceconditionThedesignationoftheseverityoftestusedtoevaluateacomponent.3.9VelocitychangeTheintegraloftheaccelerationintervalofthedynamicmotionovertheinterval.3.10CavitypackageAcomponentthathasthedevicelocatedwithinthecavityofthepackagebody.3.11Peak-peakdisplacementThemaximumdifferencebetweenhighestandlowestvaluesofthedisplacementofthedynamicmotioninterval.3.12GaussianrandomvibrationVibrationcharacterizedbyhavingaccelerationandfrequencyvaluesoveranintervaloftimewhichoccu