PCB bhodhi ine imwe dhizaini, maviri akaturikidzana uye akawanda akaturikidzana, pakati payo hapana muganho pahuwandu hwematanho emultilayer board. Parizvino, kune anopfuura zana akaturikidzana ePCB, uye yakajairika multilayer PCB ine mana akaturikidzana uye matanhatu akaturikidzana. Saka nei vanhu vachiti, "sei PCB multilayers kazhinji?" Mubvunzo? Kunyangwe ma layer ane zvakanakira kupfuura zvisinganzwisisike layers.
1. Mutengo wakaderera
Nekuda kwechikamu chimwe chemidhiya uye foil, mutengo wezvigadzirwa zvezvisinganzwisisike-nhamba-nhamba PCB mabhodhi wakadzikira zvishoma pane iwo ane kunyange-nhamba-nhamba mabhodhi ePCB. Zvisinei, kushandiswa kwemari ye-odd-layer PCB yakakwirira zvikuru kupfuura ye-even-layer PCB.Mutengo wekugadzirisa wemukati wemukati wakafanana, asi foil / core structure zviri pachena inowedzera mari yekugadzirisa yekunze kwekunze.
Odd-layer PCB inoda kuwedzera isiri-standard laminated core bonding process pahwaro hwekugadzira nuclear yenyu pamberi pe laminating, izvo zvinowedzera njodzi yekukwenya uye etch zvikanganiso pane yekunze layer.
2. Chimiro chekuenzanisa kuti usapinda
Chikonzero chakanakisisa chekugadzira PCBS pasina zvidimbu zvisinganzwisisike-nhamba-nhamba ndeyokuti zvisinganzwisisike-nhamba zvidimbu zviri nyore kukotama.Kana PCB yakatonhodzwa mushure me-multi-layer circuit bonding process, kusiyana kwe laminating tension pakati pe core structure uye foil-coated structure ichakonzera PCB kukotama. Sezvo kukora kwebhodhi kunowedzera, njodzi yekupeta PCB inoumbwa nezvikamu zviviri zvakasiyana inowedzera.Kiyi yekubvisa kubhenda kwebhodhi redunhu ndeye kushandisa yakaenzana layering.Kunyange zvazvo imwe dhigirii yekupeta PCB inosangana nezvinodiwa, iyo inotevera yekugadzirisa inobudirira. ichaderedzwa, zvichikonzera kuwedzera kwemari.Nekuti gungano rinoda midziyo yakakosha uye nzira, zvikamu zvekuisa zvakarurama zvinoderedzwa, saka zvinokuvadza hutano.
Chinja zviri nyore kunzwisisa: mukuita kwePCB tekinoroji, mana akaturikidzana bhodhi ari nani pane matatu layer bhodhi control, kunyanya maererano nesymmetry, iyo warp degree yechina layer board inogona kudzorwa pasi pe0.7% (IPC600 standard), asi iyo matatu akaturikidzana bhodhi saizi, warp madhigirii anodarika chiyero, izvi zvichakanganisa iyo SMT uye kuvimbika kwechigadzirwa chose, saka mugadziri mukuru, haisi nhamba isinganzwisisike yedhizaini bhodhi dhizaini, kunyangwe kana iri isinganzwisisike layer mabasa, ichave. rakagadzirirwa kunyepera kuenzana, iyo 5 inogadzira 6 layer, layer 7 8 layer board.
Nezvikonzero zviri pamusoro apa, mazhinji PCB multilayers akagadzirwa sematanho, uye zvisinganzwisisike maseru ari mashoma.