Multilayer PCB inonyanya kuumbwa nemhangura foil, semi-yakaporeswa sheet, core board.Kune mhando mbiri dzepress-fit chimiro, dzinoti copper foil uye core board press-fit structure uye core board uye core board press-fit structure.Inofarirwa foil yemhangura uye core lamination chimiro, mahwendefa akakosha (akadai seRogess44350, nezvimwewo) multilayer board uye yakasanganiswa yedhiza dhizaini bhodhi inogona kushandiswa yakakosha lamination chimiro.Ziva kuti iyo yakadzvanywa chimiro (PCB Kuvaka) uye dhayagiramu yekuchera yeakaturikidzana board sequence (Stack-up- layers) pfungwa mbiri dzakasiyana.Iyo yekutanga inoreva iyo PCB yakatsikirirwa pamwe chete kana iyo yakaturikidzana chimiro, inozivikanwawo seyakaturikidzana chimiro, iyo yekupedzisira inoreva PCB dhizaini yedhizaini, inozivikanwawo seye stacking order.
1. Yakatsikirirwa pamwe chete chimiro chekugadzira zvinodiwa
Kuti uderedze chiitiko chePCB warpage, PCB yakadzvanywa pamwe chete chimiro chinofanira kusangana nezvinodiwa symmetry, ndiko kuti, ukobvu hwemhangura foil, media layer chikamu uye ukobvu, mhando yegraphic kugovera (line layer, plane layer), yakatsikirirwa pamwechete symmetrical hama. kune yakatwasuka pakati pePCB.
2. Conductor mhangura ukobvu
(1) ukobvu hwemhangura hwemhangura hunocherechedzwa pamifananidzo yehukobvu hwemhangura hwakapedzwa, ndiko kuti, ukobvu hwemhangura hwekunze hwekukora kwefoiri yemhangura yepasi pamwe neukobvu hwedhiri rekupura, ukobvu hwemukati hwemhangura kune ukobvu hwemukati. pasi mhangura foil.Hukobvu hwekunze hwemhangura padhirowa hwakanyorwa se "copper foil ukobvu + plating, uye ukobvu hwemukati hwemhangura hunonzi "copper foil ukobvu".
(2) 2OZ uye pamusoro gobvu pasi pasi mhangura yekushandisa kufunga.
Inofanira kushandiswa symmetrically mukati laminated chimiro.
Sezvinobvira kudzivirira kuisa muL2 uye Ln-2 layer, kureva, Pamusoro, Pazasi pepamusoro pechipiri chekunze, kuitira kudzivirira PCB pamusoro kusaenzana, kuunyana.
3. Yakatsikirirwa chimiro zvinodiwa
Kudzvanya muitiro ndiyo kiyi nzira yekugadzirwa kwePCB, nguva zhinji maburi akatsikirirwa uye kurongeka kwedisiki kuchave kwakanyanya, iyo yakanyanya kukomba PCB deformation, kunyanya kana asymmetric yakadzvanywa pamwechete.Lamination zvinodiwa kuti lamination, akadai mhangura ukobvu uye midhiya ukobvu zvinofanira kufanana.
Nguva yekutumira: Nov-18-2022