Mukugadzirwa kwePCB board, iyo anti-ESD dhizaini yePCB inogona kuwanikwa kuburikidza nekuisa, kurongeka kwakaringana uye wiring nekuisa. Munguva yekugadzira maitiro, huwandu hukuru hwekugadziridzwa kwedhizaini hunogona kugumira pakuwedzera kana kubvisa zvikamu kuburikidza nekufanotaura. Nekugadzirisa PCB dhizaini uye wiring, ESD inogona kudzivirirwa zvakanaka.
Static PCB magetsi kubva mumuviri wemunhu, zvakatipoteredza uye kunyange mukati memagetsi PCB board midziyo ichakonzera kukuvadzwa kwakasiyana-siyana kune chaiyo semiconductor chip, sekupinda mukati mutete insulation layer mukati mechikamu; Kukuvadza kugedhi reMOSFET uye CMOS zvikamu; CMOS PCB kopi trigger kukiya; PN junction ine short circuit reverse bias; Short-circuit yakanaka PCB kopi bhodhi yekumisa PN junction; PCB sheet rinonyungudutsa waya inotengeswa kana waya yealuminium muPCB sheet chikamu chechishandiso chinoshanda. Kuti ubvise kukanganiswa kwe electrostatic discharge (ESD) uye kukuvadzwa kwemidziyo yemagetsi, zvinodikanwa kutora akasiyana siyana ehunyanzvi matanho ekudzivirira.
Mukugadzirwa kwePCB board, iyo anti-ESD dhizaini yePCB inogona kuwanikwa nekuisa uye kwakaringana marongero ePCB board wiring uye kuisirwa. Munguva yekugadzira maitiro, huwandu hukuru hwekugadziridzwa kwedhizaini hunogona kugumira pakuwedzera kana kubvisa zvikamu kuburikidza nekufanotaura. Nekugadzirisa iyo PCB dhizaini uye nzira, iyo PCB yekukopa bhodhi inogona kudzivirirwa kubva kuPCB yekukopa bhodhi ESD. Heano mamwe maitiro akajairika.
Shandisa zvidimbu zvakawanda zvePCB sezvinobvira, zvichienzaniswa nekaviri-mativi PCB, ndege yepasi uye ndege yemagetsi, pamwe chete nechiratidzo chakanyatsorongeka mutsara-pasi spacing inogona kuderedza yakajairika mode impedance uye inductive coupling, kuitira kuti isvike 1. /10 kusvika 1/100 yePCB yakapetwa kaviri. Edza kuisa chiratidzo chega chega padivi pesimba remagetsi kana pasi pasi. Kune yakakwira-density PCBS ine zvikamu pane ese epamusoro uye epasi pepamusoro, ane mapfupi ekubatanidza mitsara uye nzvimbo zhinji dzekuzadza, unogona kufunga kushandisa mutsara wemukati. Kune mbiri-mativi PCBS, yakasimba yakarukwa magetsi uye gidhi repasi rinoshandiswa. Iyo tambo yemagetsi iri pedyo nepasi, pakati pemitsetse yakatwasuka uye yakatwasuka kana kuzadza nzvimbo, kubatanidza zvakanyanya sezvinobvira. Rimwe divi regridi PCB shizha saizi ishoma pane kana kuenzana ne60mm, kana zvichibvira, saizi yegridi inofanira kunge isingasviki 13mm.
Ita shuwa kuti imwe neimwe yedunhu PCB pepa iri compact sezvinobvira.
Isa zvese zvinongedzo parutivi zvakanyanya sezvinobvira.
Kana zvichikwanisika, suma iyo PCB tambo yemagetsi mutsara kubva pakati pekadhi uye kure nenzvimbo dzinogona kutungamira ESD maitiro.
Pamatanho ese ePCB pazasi pezvibatanidza zvinobuda kunze kwechassis (ayo anowanzo tungamira ESD kukuvadzwa kuPCB kopi bhodhi), isa yakafara chassis kana polygon kuzadza pasi uye uzvibatanidze pamwe nemaburi panguva dzinosvika 13mm.
Isa maburi ekumisikidza ePCB pamupendero wekadhi, uye batanidza mapedhi epamusoro nepasi ePCB sheet unipeed flux kutenderedza maburi anokwira kusvika pasi pechasisi.
Pakuunganidza PCB, usaise chero solder kumusoro kana pasi PCB sheet pad. Shandisa masiruuru ane akavakirwa-mukati PCB sheet washer kuti uwane kubata kwakasimba pakati pePCB sheet/shield mukesi yesimbi kana tsigiro pasi pevhu.
Iyo imwe chete "nzvimbo yekuzviparadzanisa" inofanira kugadzikwa pakati pechasi pasi uye dunhu repasi rega rega rega; Kana zvichiita, chengeta nzvimbo iri pa 0.64mm.
Pamusoro nepasi pekadhi padhuze nePCB yekukopa bhodhi maburi ekumisikidza, batanidza chassis nepasi redunhu pamwe chete newaya dzakafara 1.27mm pamwe newaya yepasi pechasi pese 100mm. Pedyo neaya mapoinzi ekubatanidza, solder pads kana maburi ekumisikidza anoiswa pakati pechassis pasi uye redunhu uriri PCB sheet. Aya mabatanidzo epasi anogona kuchekwa akavhurika nebadza kuti arambe akavhurika, kana kusvetuka nemagnetic bead/high frequency capacitor.
Kana bhodhi redunhu risingazoiswe mune simbi kesi kana PCB sheet shielding mudziyo, usashandise solder kushorwa kumusoro uye pasi nyaya yekugadzika waya dzedare redunhu, kuitira kuti dzigone kushandiswa seESD arc discharge electrodes.
Kumisa mhete yakatenderedza dunhu mune inotevera PCB mutsara:
(1) Pamusoro pemupendero wePCB yekukopa mudziyo uye chassis, isa nzira yemhete kutenderedza yese yekunze perimeter.
(2) Ita shuwa kuti matinji ese anopfuura 2.5mm yakafara.
(3)Batanidza zvindori nemakomba 13mm yega.
(4) Batanidza ivhu remhete kune yakajairwa pasi peyakawanda-layer PCB yekukopa sedunhu.
(5) Pamapepa ePCB ane mativi maviri akaiswa mumasimbi akavharirwa kana midziyo yekudzivirira, pasi remhete rinofanirwa kubatanidzwa kune redunhu rinowanzoenderana. Iyo isina kuvharidzirwa yakapetwa kaviri dunhu redunhu rinofanirwa kubatanidzwa kune iyo mhete pasi, iyo mhete pasi haigone kuvharwa ne solder resistance, kuitira kuti mhete iite se ESD discharge tsvimbo, uye inokwana 0.5mm yakafara gap inoiswa pane imwe nzvimbo. chinzvimbo paivhu remhete (ese akaturikidzana), izvo zvinogona kudzivirira PCB kopi bhodhi kuti iite chishwe chikuru. Nharaunda pakati pechiratidzo wiring uye pasi mhete haifanirwe kunge iri pasi pe 0.5mm.