Ndi kusintha kwa ukadaulo wa PCB komanso kuchuluka kwa ogula zinthu mwachangu komanso zamphamvu kwambiri, PCB yasintha kuchoka pa bolodi lamitundu iwiri kupita ku bolodi yokhala ndi zigawo zinayi, zisanu ndi chimodzi komanso magawo khumi mpaka makumi atatu a dielectric ndi ma conductor..Chifukwa chiyani muwonjezere kuchuluka kwa zigawo?Kukhala ndi zigawo zambiri kumatha kukulitsa kugawa kwamagetsi kwa board board, kuchepetsa crosstalk, kuthetsa kusokoneza kwamagetsi ndikuthandizira ma siginecha othamanga kwambiri.Kuchuluka kwa zigawo zomwe zimagwiritsidwa ntchito pa PCB zimatengera kagwiritsidwe ntchito, kachulukidwe ka ntchito, kachulukidwe ka pini, ndi zofunikira zakusanjikiza kwa ma sign.

Poika zigawo ziwiri, pamwamba (ie, wosanjikiza 1) amagwiritsidwa ntchito ngati chizindikiro.Mipando yamagulu anayi imagwiritsa ntchito zigawo zapamwamba ndi zapansi (kapena 1st ndi 4th layers) monga chizindikiro cha chizindikiro.Pakukonza uku, zigawo za 2 ndi 3 zimagwiritsidwa ntchito ngati ndege.Prepreg wosanjikiza amamangirira mapanelo awiri kapena kupitilira apo ndipo amakhala ngati dielectric pakati pa zigawozo.PCB yachisanu ndi chimodzi imawonjezera zigawo ziwiri zamkuwa, ndipo zigawo zachiwiri ndi zisanu zimakhala ngati ndege.Zigawo 1, 3, 4, ndi 6 zimanyamula zizindikiro.

Pitirizani ku mawonekedwe a zigawo zisanu ndi chimodzi, mkati mwake awiri, atatu (pamene ndi bolodi lokhala ndi mbali ziwiri) ndi chachinayi (pamene ndi bolodi lokhala ndi mbali ziwiri) ngati gawo lalikulu, ndipo prepreg (PP) ndi kuphatikizika pakati pa ma core board.Popeza zinthu za prepreg sizinachiritsidwe kwathunthu, zinthuzo ndi zofewa kuposa zapakati.Njira yopangira PCB imagwiritsa ntchito kutentha ndi kupanikizika pamtengo wonse ndikusungunula prepreg ndi pachimake kuti zigawozo zigwirizane pamodzi.

Ma board a Multilayer amawonjezera zigawo zambiri zamkuwa ndi dielectric pa stack.Mu PCB ya zigawo zisanu ndi zitatu, mizere isanu ndi iwiri yamkati ya dielectric glue magawo anayi a planar ndi magawo anayi azizindikiro pamodzi.Ma board khumi mpaka khumi ndi awiri amawonjezera kuchuluka kwa zigawo za dielectric, kusunga magawo anayi a planar, ndikuwonjezera kuchuluka kwa magawo azizindikiro.