Maitiro ekugadzira e8-layer PCB anosanganisira akati wandei matanho akakosha kuti ave nechokwadi chekubudirira kugadzirwa kwemabhodhi emhando yepamusoro uye akavimbika.Kubva pakurongeka kwemagadzirirwo kusvika kugungano rekupedzisira, nhanho imwe neimwe inoita basa rakakosha mukuwana inoshanda, yakasimba uye inoshanda PCB.
Chekutanga, nhanho yekutanga mu8-layer PCB yekugadzira maitiro dhizaini uye marongero.Izvi zvinosanganisira kugadzira purani yebhodhi, kuona kuiswa kwezvikamu, uye kusarudza mafambisirwo ezvironda. Iyi nhanho inowanzo shandisa maturusi ekugadzira software akadai seAltium Designer kana EagleCAD kugadzira inomiririra yedhijitari yePCB.
Mushure mokunge kugadzirwa kwapera, danho rinotevera ndiro kugadzirwa kwebhodhi redunhu.Maitiro ekugadzira anotanga nekusarudza yakanyatsokodzera substrate zvinhu, kazhinji fiberglass-yakasimbiswa epoxy, inozivikanwa seFR-4. Ichi chinyorwa chine simba rakanakisa remuchina uye insulating zvivakwa, zvichiita kuti ive yakanakira PCB kugadzira.
Maitiro ekugadzira anosanganisira akati wandei-matanho, anosanganisira etching, layer alignment uye kuchera.Etching inoshandiswa kubvisa yakawandisa mhangura kubva kune substrate, ichisiya mitsetse uye mapadhi kumashure. Layer alignment inozoitwa kurongedza nemazvo akasiyana akaturikidzana ePCB. Kurongeka kwakakosha panguva iyi nhanho kuve nechokwadi chekuti mukati nekunze mativi akanyatsoenderana.
Kuchera imwe nhanho yakakosha mu8-layer PCB yekugadzira maitiro.Zvinosanganisira kuchera makomba chaiwo muPCB kugonesa kubatana kwemagetsi pakati pezvikamu zvakasiyana. Makomba aya, anonzi vias, anogona kuzadzwa nezvinhu conductive kupa mubatanidzwa pakati akaturikidzana, nokudaro kusimudzira kushanda uye kuvimbika PCB.
Mushure mekunge maitiro ekugadzira apera, danho rinotevera nderekuisa solder mask uye skrini inodhinda yekumaka chikamu.Solder mask itete mutsetse wemvura inogoneka polima inoshandiswa kuchengetedza mhangura kubva kune oxidation uye kudzivirira mabhiriji anotengeswa panguva yekusangana. Silk screen layer, kune rumwe rutivi, inopa tsananguro yechikamu, mareferensi vagadziri, uye rumwe ruzivo rwekutanga.
Mushure mekushandisa iyo solder mask uye skrini kudhinda, bhodhi redunhu richapfuura nemaitiro anonzi solder paste screen printing.Iyi nhanho inosanganisira kushandisa stencil kuisa chidimbu chesolder paste pamusoro pebhodhi redunhu. Solder paste inoumbwa nesimbi alloy particles inonyunguduka panguva yereflow soldering process kuti iite yakasimba uye yakavimbika magetsi kubatana pakati pechikamu nePCB.
Mushure mekuisa solder paste, otomatiki pick-ne-nzvimbo muchina unoshandiswa kuisa zvinhu paPCB.Michina iyi inoisa zvikamu munzvimbo dzakatarwa zvichienderana nemagadzirirwo emagadzirirwo. Izvo zvikamu zvinobatwa munzvimbo ne solder paste, zvichigadzira zvenguva pfupi zvemagetsi uye magetsi.
Nhanho yekupedzisira mu8-layer PCB yekugadzira maitiro ndeye reflow soldering.Iyo nzira inosanganisira kuisa pasi rese redunhu bhodhi kune inodzorwa tembiricha nhanho, kunyungudutsa solder paste uye zvachose kubatanidza zvikamu kubhodhi. Iyo reflow soldering process inovimbisa yakasimba uye yakavimbika yemagetsi kubatana uku ichidzivirira kukuvadzwa kwezvikamu nekuda kwekupisa.
Mushure mekunge reflow soldering process yapera, iyo PCB inotariswa uye nekuedzwa kuti ive nechokwadi chekushanda kwayo uye mhando.Ita bvunzo dzakasiyana dzakadai sekutarisa kwekuona, magetsi ekuenderera mberi bvunzo, uye inoshanda bvunzo kuona chero hurema kana nyaya.
Muchidimbu, the8-layer PCB kugadzira maitiroinosanganisira nhevedzano yenhanho dzakakosha dzakakosha pakugadzira bhodhi rakavimbika uye rinoshanda.Kubva pakugadzira uye dhizaini kusvika pakugadzira, kuunganidza uye kuyedzwa, nhanho imwe neimwe inobatsira kune yakazara mhando uye kushanda kwePCB. Nekutevera nhanho idzi nemazvo uye nekutarisisa kune zvakadzama, vagadziri vanogona kugadzira emhando yepamusoro maPCB anosangana neakasiyana ekushandisa zvinodiwa.
Nguva yekutumira: Sep-26-2023
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