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Gulu ndi ntchito ya mabowo pa PCB

Mabowo paPCBatha kugawidwa m'mabowo (PTH) ndi osakutidwa kudzera m'mabowo (NPTH) kutengera ngati ali ndi zolumikizira zamagetsi.

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Kupyolera mu dzenje (PTH) kumatanthauza dzenje lomwe lili ndi zokutira zachitsulo pamakoma ake, zomwe zimatha kulumikizana ndi magetsi pakati pa ma conductive pagawo lamkati, lakunja, kapena zonse ziwiri za PCB.Kukula kwake kumatsimikiziridwa ndi kukula kwa dzenje loboola ndi makulidwe a wosanjikiza wokutidwa.

Osakutidwa kudzera m'mabowo (NPTH) ndi mabowo omwe satenga nawo gawo pakulumikizana kwamagetsi kwa PCB, yomwe imadziwikanso kuti mabowo opanda zitsulo.Malinga ndi gawo lomwe dzenje limadutsa pa PCB, mabowo amatha kugawidwa ngati dzenje, kukwiriridwa kudzera / dzenje, ndi akhungu kudzera/dzenje.

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Kudzera m'mabowo kudutsa PCB lonse ndipo angagwiritsidwe ntchito malumikizidwe mkati ndi/kapena malo ndi kukwera kwa zigawo zikuluzikulu.Pakati pawo, mabowo omwe amagwiritsidwa ntchito pokonza ndi / kapena kugwirizana kwa magetsi ndi zigawo zikuluzikulu (kuphatikizapo mapini ndi mawaya) pa PCB amatchedwa mabowo chigawo.Mabowo okulungidwa omwe amagwiritsidwa ntchito polumikizira zigawo zamkati koma popanda kuyikapo zowongolera kapena zida zina zolimbikitsira zimatchedwa kudzera mabowo.Pali makamaka zolinga ziwiri zobowola mabowo pa PCB: imodzi ndiyo kupanga chotsegula kudzera pa bolodi, kulola njira zotsatila kuti zigwirizane ndi magetsi pakati pa pamwamba, pansi, ndi mabwalo amkati a bolodi;china ndi kusunga structural umphumphu ndi malo olondola a chigawo unsembe pa bolodi.

Vis akhungu ndi vias m'manda chimagwiritsidwa ntchito mu high-kachulukidwe interconnect (HDI) luso la HDI pcb, makamaka mu zigawo mkulu pcb matabwa.Akhungu vias ambiri kulumikiza wosanjikiza woyamba wosanjikiza wachiwiri.Mu mapangidwe ena, vias akhungu angathenso kulumikiza wosanjikiza woyamba wosanjikiza wachitatu.Pophatikiza ma vias akhungu ndi okwiriridwa, maulumikizidwe ambiri ndi kachulukidwe apamwamba a board ofunikira a HDI atha kukwaniritsidwa.Izi zimathandiza kuti kachulukidwe kachulukidwe kachulukidwe kazida zing'onozing'ono ndikuwongolera kufala kwa mphamvu.Ma vias obisika amathandizira kuti matabwa ozungulira azikhala opepuka komanso osakanikirana.Akhungu ndi okwiriridwa kudzera m'mapangidwe amagwiritsidwa ntchito kwambiri pakupanga zovuta, zolemetsa, komanso zotsika mtengo zamagetsi zamagetsi monga.mafonimapiritsi, ndizida zamankhwala. 

Akhungu kudzeraamapangidwa ndi kulamulira kuya kwa kubowola kapena laser ablation.Yotsirizira pakali pano ndiyo njira yofala kwambiri.The stacking wa kudzera mabowo aumbike mwa sequential layering.Zotsatira zake kudzera m'mabowo zitha kusungidwa kapena kusanjikiza, ndikuwonjezera njira zopangira ndi kuyesa ndikuwonjezera mtengo. 

Malingana ndi cholinga ndi ntchito za mabowo, akhoza kugawidwa monga:

Kudzera m'mabowo:

Ndi mabowo opangidwa ndi zitsulo omwe amagwiritsidwa ntchito kuti agwirizane ndi magetsi pakati pa zigawo zosiyanasiyana zoyendetsa pa PCB, koma osati pofuna kuyika zigawo.

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PS: Kudzera m'mabowo akhoza kugawidwanso mu dzenje, dzenje lokwiriridwa, ndi dzenje lakhungu, kutengera ndi gawo lomwe dzenjelo limalowera pa PCB monga tafotokozera pamwambapa.

Mabowo:

Amagwiritsidwa ntchito polumikizira ndi kukonza zida zamagetsi zamagetsi, komanso mabowo omwe amagwiritsidwa ntchito polumikizira magetsi pakati pa magawo osiyanasiyana opangira.Mabowo amapangidwa ndi zitsulo, ndipo amatha kukhala ngati malo olumikizirana ndi zolumikizira.

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Mabowo okwera:

Ndi mabowo akuluakulu pa PCB omwe amagwiritsidwa ntchito poteteza PCB ku casing kapena mawonekedwe ena othandizira.

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Mipata:

Amapangidwa pophatikiza mabowo angapo kapena mphero mu pulogalamu yoboola yamakina.Nthawi zambiri amagwiritsidwa ntchito ngati malo okwera pamapini olumikizira, monga mapini owoneka ngati oval a socket.

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Mabowo akumbuyo:

Ndi mabowo akuya pang'ono obowoleredwa m'mabowo okutidwa pa PCB kuti alekanitse chinkhupule ndikuchepetsa kuwunikira kwa ma siginecha panthawi yotumizira.

Zotsatirazi ndi mabowo ena othandizira omwe opanga PCB angagwiritse ntchitoNjira yopangira PCBkuti akatswiri opanga ma PCB ayenera kudziwa:

● Mabowo opeza ali ndi mabowo atatu kapena anayi pamwamba ndi pansi pa PCB.Mabowo ena pa bolodi amagwirizana ndi mabowowa ngati malo opangira mapini ndi kukonza.Zomwe zimadziwikanso kuti mabowo omwe amalowera kapena mabowo omwe amalowera, amapangidwa ndi makina obowola chandamale (makina obowola kapena X-RAY pobowola makina, etc.) asanabowole, ndipo amagwiritsidwa ntchito poyika ndi kukonza zikhomo.

Kuyanjanitsa kwapakatimabowo ndi mabowo m'mphepete mwa bolodi la multilayer, omwe amagwiritsidwa ntchito kuti azindikire ngati pali kusiyana kulikonse mu bolodi la multilayer musanabowole mkati mwa chithunzi cha bolodi.Izi zimatsimikizira ngati pulogalamu yobowola ikufunika kusinthidwa.

● Bowo la ma code ndi mzere wa mabowo ang'onoang'ono kumbali imodzi ya pansi pa bolodi yomwe imagwiritsidwa ntchito kusonyeza zina zopangira zinthu, monga chitsanzo cha malonda, makina opangira makina, makina opangira makina, ndi zina zotero. Masiku ano, mafakitale ambiri amagwiritsa ntchito chizindikiro cha laser.

● Mabowo a Fiducial ndi mabowo amitundu yosiyanasiyana m'mphepete mwa bolodi, omwe amagwiritsidwa ntchito kuti adziwe ngati m'mimba mwake muli olondola panthawi yobowola.Masiku ano, mafakitale ambiri amagwiritsa ntchito matekinoloje ena pazinthu izi.

● Ma tabu a breakaway ndi mabowo omata omwe amagwiritsidwa ntchito podula ndi kusanthula PCB kuti awonetse mtundu wa mabowowo.

● Impedans mayeso mabowo ndi yokutidwa mabowo ntchito kuyesa impedance wa PCB.

● Mabowo oyembekezera nthawi zambiri amakhala mabowo osapukutidwa omwe amagwiritsidwa ntchito kuti bolodi isayike chammbuyo, ndipo nthawi zambiri amagwiritsidwa ntchito poikira pomanga kapena kujambula.

● Mabowo nthawi zambiri amakhala osapukutidwa omwe amagwiritsidwa ntchito pochita zinthu zina.

● Mabowo a Rivet ndi mabowo osakutidwa omwe amagwiritsidwa ntchito pokonza ma rivets pakati pa chigawo chilichonse cha core material ndi mapepala omangirira panthawi ya multilayer board lamination.Malo a rivet amayenera kubowoleredwa pobowola kuti tipewe thovu kuti lisapitirire pamenepo, zomwe zingayambitse kusweka kwa bolodi pambuyo pake.

Yolembedwa ndi ANKE PCB


Nthawi yotumiza: Jun-15-2023