8 Layer ENIG FR4 Multilayer PCB

1. Kuvuta kwa kuyanjanitsa kwapakati

Chifukwa cha zigawo zambiri za bolodi la multilayer PCB, kufunikira kwa ma calibration a PCB ndipamwamba kwambiri.Nthawi zambiri, kulolerana kwa kulumikizana pakati pa zigawo kumayendetsedwa pa 75um.Zimakhala zovuta kwambiri kuwongolera mayanidwe a bolodi la multilayer PCB chifukwa cha kukula kwakukulu kwa chipangizocho, kutentha kwambiri ndi chinyezi mumsonkhano wosinthira zithunzi, kuphatikizika kwapang'onopang'ono komwe kumachitika chifukwa cha kusagwirizana kwamagulu osiyanasiyana apakati, komanso mawonekedwe oyika pakati pa zigawo. .

2. Kuvuta kwa kupanga dera lamkati

The multilayer PCB board utenga zipangizo zapadera monga mkulu TG, liwiro, mkulu pafupipafupi, mkuwa wolemera, woonda dielectric wosanjikiza ndi zina zotero, amene amaika patsogolo zofunika mkulu wa mkati kupanga dera ndi kulamulira likuonetsa kukula.Mwachitsanzo, kukhulupirika kwa kufalikira kwa chizindikiro cha impedance kumawonjezera kuvutikira kwa kupanga kwapakati kwapakati.M'lifupi ndi katayanidwe ka mzere ndi kakang'ono, dera lotseguka ndi dera lalifupi likuwonjezeka, chiwongoladzanja ndi chochepa;ndi zigawo zowonda kwambiri za mizere, kuthekera kozindikira kutayikira kwa AOI kumawonjezeka.Mbali yamkati yamkati ndi yopyapyala, yosavuta kukwinya, kusawoneka bwino, yosavuta kupindika;Multilayer PCB nthawi zambiri imakhala ndi board board, yomwe imakhala ndi kukula kwa mayunitsi okulirapo komanso mtengo wapamwamba kwambiri.

3. Zovuta pakupanga lamination ndi zoyenera kupanga

Ma board ambiri amkati ndi ma semi-ochiritsidwa amapangidwa pamwamba, omwe amakhala ndi zolakwika monga slide plate, lamination, resin void ndi zotsalira za bubble popanga masitampu.Popanga kapangidwe ka laminated, kukana kutentha, kukana kukakamiza, zomatira ndi makulidwe a dielectric azinthu ziyenera kuganiziridwa bwino, ndipo dongosolo loyenera lazambiri la multilayer liyenera kupangidwa.Chifukwa cha kuchuluka kwa zigawo, kukulitsa ndi kuwongolera kwapang'onopang'ono ndi chiwongola dzanja cha kukula sikufanana, ndipo wosanjikiza wocheperako wosanjikiza wosanjikiza ndi wosavuta kupangitsa kulephera kwa mayeso odalirika apakati-wosanjikiza.

4. Kubowola zovuta kupanga

Kugwiritsa ntchito TG yayikulu, kuthamanga kwambiri, ma frequency apamwamba, mbale yapadera yamkuwa wandiweyani kumawonjezera kubowola roughness, kubowola burr ndi kubowola madontho kuchotsa zovuta.Zigawo zambiri, zida zobowola ndizosavuta kuswa;CAF kulephera chifukwa wandiweyani BGA ndi yopapatiza dzenje khoma katayanitsidwe n'zosavuta kutsogolera wokonda kubowola vuto chifukwa PCB makulidwe.