Ndi malo otani omwe amawongolera njira zazikulu zopangira ma board amitundu yambiri

Ma board ozungulira ma multilayer nthawi zambiri amatanthauzidwa ngati ma board a 10-20 kapena apamwamba apamwamba kwambiri, omwe ndi ovuta kuwakonza kuposa ma board amtundu wamitundu yambiri ndipo amafuna apamwamba komanso olimba.Amagwiritsidwa ntchito kwambiri pazida zoyankhulirana, ma seva apamwamba kwambiri, zamagetsi zamankhwala, ndege, kuwongolera mafakitale, zankhondo ndi zina.M'zaka zaposachedwa, kufunikira kwa msika wama board ozungulira magawo angapo m'magawo olumikizirana, masiteshoni oyambira, ndege, ndi asitikali akadali amphamvu.
Poyerekeza ndi zinthu zachikhalidwe za PCB, ma board ozungulira amitundu yambiri amakhala ndi mawonekedwe a bolodi yokhuthala, zigawo zambiri, mizere yowundana, kupitilira mabowo, kukula kwa mayunitsi akulu, ndi wosanjikiza wocheperako wa dielectric.Zofuna zakugonana ndizokwera kwambiri.Pepalali likufotokoza mwachidule zovuta zazikulu zogwirira ntchito zomwe zimakumana ndi kupanga matabwa apamwamba kwambiri, ndikuyambitsa mfundo zazikuluzikulu za kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka multilayer.
1. Zovuta pakugwirizanitsa zigawo
Chifukwa cha kuchuluka kwa zigawo mu bolodi yamagulu osiyanasiyana, ogwiritsa ntchito ali ndi zofunikira zapamwamba komanso zapamwamba pakuwongolera zigawo za PCB.Nthawi zambiri, kulolerana kwa kulumikizana pakati pa zigawo kumayendetsedwa pa 75 microns.Poganizira kukula kwakukulu kwa gulu lamagulu amitundu yambiri, kutentha kwakukulu ndi chinyezi mu msonkhano wa kutembenuka kwazithunzi, kusuntha kwapang'onopang'ono chifukwa cha kusagwirizana kwa matabwa osiyanasiyana apakati, ndi njira yopangira interlayer, kulamulira kwapakati pamagulu ambiri. bolodi lozungulira ndilovuta kwambiri.
Multilayer circuit board
2. Zovuta kupanga mabwalo amkati
Ma board ozungulira ma Multilayer amagwiritsa ntchito zida zapadera monga TG yayikulu, kuthamanga kwambiri, ma frequency apamwamba, mkuwa wandiweyani, ndi zigawo zoonda kwambiri za dielectric, zomwe zimayika patsogolo zofunikira pakupanga dera lamkati ndikuwongolera kukula kwazithunzi.Mwachitsanzo, kukhulupirika kwa kufalikira kwa chizindikiro cha impedance kumawonjezera zovuta za kupanga dera lamkati.
M'lifupi ndi mizere yotalikirana ndi yaying'ono, yotseguka ndi mabwalo amfupi amawonjezedwa, mabwalo amfupi amawonjezedwa, ndipo chiwongola dzanja ndi chochepa;pali zigawo zambiri za mizere yopyapyala, ndipo kuthekera kwa AOI kuzindikira kutayikira mkati kumawonjezeka;bolodi lamkati lamkati ndi lopyapyala, losavuta kukwinya, silikuwoneka bwino, komanso losavuta kupindika mukamangirira makina;Ma mbale apamwamba nthawi zambiri amakhala matabwa a dongosolo, kukula kwa unit ndi kwakukulu, ndipo mtengo wazinthu zowonongeka ndi wokwera.
3. Zovuta Kupanga Ma compression
Ma board ambiri amkati ndi ma prepreg board ndi apamwamba, omwe amangowonetsa kuipa kwa slippage, delamination, resin voids ndi zotsalira za bubble popanga masitampu.Popanga kapangidwe ka laminate, kukana kutentha, kukana kukanikiza, zomatira ndi makulidwe a dielectric azinthu ziyenera kuganiziridwa mokwanira, ndipo dongosolo loyenera lamagulu ozungulira lamitundu ingapo liyenera kupangidwa.
Chifukwa cha kuchuluka kwa zigawo, kukulitsa ndi kuwongolera kocheperako komanso kubweza koyezetsa kukula sikungasungire kusasinthika, ndipo wosanjikiza wocheperako wa interlayer ndi wosavuta, womwe umabweretsa kulephera kwa kuyesa kudalirika kwa interlayer.
4. Zovuta pobowola kupanga
Kugwiritsa ntchito TG yapamwamba, kuthamanga kwambiri, ma frequency apamwamba, ndi mbale zapadera zamkuwa zokhuthala kumawonjezera zovuta pakubowola roughness, kubowola burrs ndi decontamination.Chiwerengero cha zigawo ndi chachikulu, makulidwe onse amkuwa ndi makulidwe a mbale amasonkhanitsidwa, ndipo chida chobowola ndichosavuta kusweka;vuto la kulephera kwa CAF lomwe limayambitsidwa ndi BGA yogawanika kwambiri komanso kapatala kakang'ono ka khoma;vuto lobowola oblique chifukwa cha makulidwe osavuta a mbale.Pulogalamu ya PCB


Nthawi yotumiza: Jul-25-2022