ESD原理

+-++++++++AB-+-.-.++++++--..--+++++++-.-.-.-.+++++++++++++++++++++--..--..--..++++++-.-.Ya--..--...--..--..--.--.+PVC---++--..ESDVVMOS30-1800VMOSFET100-200VGAASFET100-300VEPROM100VJFET140-7000VSAW150-500VOP-AMP190-2500VCMOSINPUTPROTECTED250-3000VSCHOTTKYDIODES300-2500VFILMRESISTORS300-3000VBIPOLARTR380-7000VECLP.C.BLEVEL500VSCR680-1000V--CLASSCLASS00--1000V1000VCLACLASS2SS23000V3000VCLASS3CLASS33000V3000V..--CLASS1CLASS1..ICICJIGICICJIGICICJIGICICJIGESD2KVESD2KVESD2000VESD10000VESD9000VV1000-5000V800-1000VMATMATESD5000VESD2000VESD7000VV500-1000VTAPE5000V-.--.---PCB.--PCB.“”..E-RINGGNDMAT.VINYIPLASTICSION10ohm123..E-RINGMAT1Mohm.11220ohm.--..--..10-20%65-90%1500V250V100V600V1200V35000V12000V6000V7000V20000VVINYLVINYLPLOYBAG2000~6000V--..--50%~60%50%~60%WRISTSTRAP1Mohm-GND220VI=V/RI=220/1000000=0.2mA1Mohm.--1Mohm1Mohm..--..MATMATICMAT--MATMATTABLTABLEEMATMATFLOORMATFLOORMAT..“”.-.--.-PIASTICVINYIIONIZEIONIZE--aa--POLONIUM210POLONIUM210----SPRAY1.2.--..-+1.12565%2024%-350%50~60%2.123MAT105~108.1M4MAT5LINELINE3.13~5CM2.34.ICIC.1..2.1Mohm3.ICIC.4.PCBPCBCONN.5.MATMAT*BELT*PCBIC.*MAT.1..2.*BELT*CHIPHEADHEAD.3..1.MAT1Mohm.2.MAT1Mohm.3.ICPCB4.MAT1Mohm.*1.IC2.IC.3.ICFORMSAST.4.ICPWB5.6..MAT1Mohm.1A.a..–100Vb..–1100Vc.B.a.50%60%MAT2KV4KV6KV8KV20%40%60%80%100%-50%-60%-50%-60%2b.c.-1Mohm--MAT-BOX-3d.e.APTDPTFIXTURE-abcd.-abcd.1.0KV2.0KV2.5KV3.0KV4.0KV5.0KV6.0KV7.0KV8.0KV9.0KV10.0KV11.0KV12.0KV90PF--..--..--..PCBPCBOOOOOOOOOOOOMATOOOOOOOOMATOOOOOOOOOOBAGOOOOOSTICKOOOOOOOFILMOOOOOOOOOOOOOOOOOOOOSMTICTPCBOOOOOOOOOEOS50%±10/1M20~25106~1010PBACHECKCHECKAB+1215V+1275V+255V-905VB-A+128V+505V1090V770V235V165V+20V-740V840V460V20V1.--2.3.-4.---PBAPBAMATTILEGround3m1mPBABOX,BOXMATSTICKEARTH-RINGMATGROUNDDIEMATMATGROUNDGROUNDGNDGND1MASS'Y(PBAPBAEARTH-RINGEARTH-RINGPBAGNDGNDSpecLeadcutterchassisEOS5VacChassisgroundLeadformerESD200V1mPBASpecROMwriterEOS5Vac3FrameGNDPBASpecHeatsinkjigESD200V1mGND1MGROUNDMATDIEMAT.BOXBOXPBA/20~25C50+/-10%TDA-4V05F5RO123/PBAAnti-staticMasking1mIonizerEOSESDGNDSpecEOSESDMAT1mChainGround)3Frame4200VPotableDVM5Vac5Vac200VICTFrameGroundICTFixtureICTCable3Tipground.Cable23Cable5VACDVMGND5VACDVMGND1.DVMACMode2.3.DVMTestTipCable2Tipground.4.5VacGND.1MSpecPBAC&CTRAYESD200VMetalcase1m1ICDispenserESD200V1m(2ASS'Y3SpecPBAEOS5VacPotableDVM33DriverEOS5VacPotableDVM33ASS'YSpecPBAWriststrapESDWristtesterTestStyrofoamESD200VAnti-static30cmboxESD200VVinylVideocableESD200Vanti-staticmaterialASS'Y41MΩStaticdissipativeConductivegroundSpecPBATablematESD200Vdissipativemat)1m(4FETpartplaESD200VAnti-static(5ASS'Y5GOODNGNGGOODANODECAPCAPCAPICCAPANODECAPFBTANODECAPION0±50VSPECStaticdissipative):106-1010/cm2105/cm2Antistatic1010/cm2WristStrap):Earth-ring.GROUNDGround,Earth(GND).ESD:Electro-StaticDischargeEOS:ElectricalOverStress