Designation:F1812−15StandardTestMethodforDeterminingtheEffectofanESDDischargeonaMembraneSwitchorPrintedElectronicDevice1ThisstandardisissuedunderthefixeddesignationF1812;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedtodeterminetheelectrostaticdischarge(ESD)shieldingeffectivenessofamembraneswitchassemblyorprintedelectronicdevice.Thistestmethodmaybeusedtotestamembraneswitchorprintedelectronicdevicetodestruction,thatis,todetermineitsmaximumESDshieldingeffectiveness,oritmaybeusedtotesttheabilityofamembraneswitchorprintedelectronicdevicetowithstandapredeterminedlevelofexposure.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse..2.Terminology2.1Definitions:2.1.1dischargepulsecount—numberofapplieddischarges.2.1.2dischargepulseinterval—timedurationbetweenap-pliedvoltage.2.1.3ESD(electrostaticdischarge)event—detectionofap-pliedchargeatinput/output(I/O)points.2.1.4I/Opoints—specifiedconductivearea,location,orcircuitry,typicallyallcircuitpaths,tracesandwires.3.SignificanceandUse3.1NearlyallelectronicdevicesaresusceptibletopossibledamageordegradationfromESDencounteredintheiroperat-ingenvironments.Thesensitivityoftheequipment,thepoten-tialconsequencesofamalfunction,andtheexpectedenviron-mentalconditionsallimpactthelevelofESDprotectionneeded.3.2ESDshieldingeffectivenesstestmaybedestructive,andunitsthathavebeentestedshouldbeconsideredunreliableforfutureuse.4.Interferences4.1Thefollowingparametersmayaffecttheresultsofthistest:4.1.1Temperaturemayaf...
