Kune imwechete-sided, kaviri-sided uye multi-layer circuit boards .Nhamba yemapuranga e-multi-layer haina kuganhurirwa.Parizvino kune anopfuura 100-layer PCBs.Iwo akajairika akawanda-layer PCBs mana akaturikidzana uye mapuranga matanhatu akaturikidzana .Zvino sei vanhu vaine mubvunzo "Sei PCB multilayer mabhodhi ese ese ane-nhamba akaturikidzana? Zvichienderana, kunyange-nhamba-nhamba PCBs ane anopfuura asinganzwisisike-nhamba-nhamba maPCB, uye ane zvimwe zvakanakira.
1. Mutengo wakaderera
Nekuda kwekushaikwa kwedhizaini ye dielectric uye foil, mutengo wezvigadzirwa zvezvisinganzwisisike-nhamba dzePCBs wakadzikira zvishoma pane iwo kunyange-nhamba-nhamba maPCB.Nekudaro, iyo mutengo wekugadzirisa weodd-layer PCBs wakakwira zvakanyanya kupfuura iwo ee even-layer PCBs.Mutengo wekugadzirisa wemukati wemukati wakafanana, asi iyo foil / musimboti chimiro sezviri pachena inowedzera mutengo wekugadzirisa wekunze. Iyo isinganzwisisike-nhamba PCB inoda kuwedzera isiri-yakajairwa laminated core layer bonding process pahwaro hweiyo musimboti chimiro maitiro.Kuenzaniswa nechimiro chenyukireya, kugona kugadzira kwemafekitari anowedzera foil kuchimiro chenyukireya kunoderera.Pamberi pe lamination uye bonding, yekunze musimboti inoda kumwe kugadzirisa, izvo zvinowedzera njodzi yekukwenya uye etching zvikanganiso pane yekunze layer.
2. Chimiro chekuenzanisa kuti usapinda Chikonzero chakanakisa chekusagadzira PCB ine nhamba isinganzwisisike matinji ndeyekuti nhamba isinganzwisisike yemadhiza mabhodhi edunhu ari nyore kukotama.Kana iyo PCB yatonhodzwa mushure meiyo multilayer yedunhu bonding process, iyo yakasiyana lamination tension yeiyo core structure uye foil-clad dhizaini ichaita kuti PCB ikotame kana yatonhora.Sezvo ukobvu hwebhodhi redunhu hunowedzera, njodzi yekukotama yePCB inoumbwa ine maviri akasiyana zvimiro inowedzera.Kiyi yekubvisa redunhu bhodhi kubhenda ndeyekutora yakaringana stack.Kunyangwe iyo PCB ine imwe dhigirii yekukotama inosangana nezvinodiwa, iyo inotevera yekugadzirisa inoshanda inodzikiswa, zvichikonzera kuwedzera kwemutengo.Nemhaka yokuti midziyo yakakosha uye mhizha inodiwa panguva yegungano, kururamisa kwekuiswa kwechikamu kunoderedzwa, izvo zvinokuvadza kunaka.
Kuti uzviise neimwe nzira, zviri nyore kunzwisisa: Muchirongwa chePCB, iyo mana-layer board inodzorwa zvirinani pane matatu-layer board, kunyanya maererano nesymmetry.Iyo warpage yechina-layer board inogona kudzorwa pazasi 0.7% (IPC600 standard), asi Kana saizi yetatu-layer board yakakura, warpage inodarika iyi chiyero, izvo zvinokanganisa kuvimbika kweSMT chigamba uye chigadzirwa chose.Naizvozvo, mugadziri mukuru haagadziri bhodhi rezvisinganzwisisike-nhamba, kunyangwe iyo isinganzwisisike-yenhamba layer yakaziva basa, ichaita Iyo Yakagadzirwa seyekunyepedzera kunyange-nhamba-nhamba dhizaini, kureva, 5 akagadzirwa sematanho matanhatu, uye 7 layers dzakagadzirwa se8-layer board. Zvichienderana nezvikonzero zviri pamusoro, mazhinji ePCB akawanda-layer mabhodhi akagadzirwa ane kunyange-nhamba-akaturikidzana uye mashoma asinganzwisisike-anenhamba akaturikidzana.
Maitiro ekuenzanisa kurongedza uye kuderedza mutengo weiyo isinganzwisisike-nhamba PCB?
Ko kana PCB isingaverengeki ikaonekwa mudhizaini?
Nzira dzinotevera dzinogona kuwana kuenzanisa stacking, kuderedza PCB kugadzira mari, uye dzivirira PCB kukotama.
1) Chiratidzo chechiratidzo uye chishandise.Iyi nzira inogona kushandiswa kana simba rekugadzira PCB rakaenzana uye chiratidzo chechiratidzo chisinganzwisisike.Iyo yakawedzerwa layer haina kuwedzera mutengo, asi inogona kupfupisa nguva yekuendesa uye kugadzirisa kunaka kwePCB. 2) Wedzera imwe yakawedzera simba layer.Iyi nzira inogona kushandiswa kana simba rekugadzira PCB risinganzwisisike uye chiratidzo chechiratidzo chakaenzana.Nzira iri nyore ndeyekuwedzera jira pakati pechitubu pasina kushandura mamwe marongero.Kutanga, tevera iyo isinganzwisisike-nhamba yePCB marongero, wobva wakopa pasi pasi pakati kuti utarise zvidimbu zvasara.Izvi zvakafanana nemaitiro emagetsi emutsetse wakakora wefoiri. 3) Wedzera chiratidzo chisina chinhu padyo nepakati pePCB stack.Iyi nzira inoderedza kusaenzana kwekuisa uye inovandudza kunaka kwePCB.Chekutanga, tevera zvisinganzwisisiki-zviverengo kuti uende munzira, wobva wawedzera chiratidzo chisina chinhu, uye womaka zvidimbu zvasara.Inoshandiswa mumaseketi emicrowave uye midhiya yakasanganiswa (yakasiyana dielectric constants) maseketi. 
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