I-Via (VIA), lena imbobo evamile esetshenziselwa ukuqhuba noma ukuxhuma imigqa ye-foil yethusi phakathi kwamaphethini e-conductive ezendlalelo ezahlukene zebhodi lesifunda. Isibonelo (njengezimbobo eziyizimpumputhe, izimbobo ezigqitshiwe), kodwa ayikwazi ukufaka umkhondo wengxenye noma izimbobo ezihlanganiswe ngethusi zezinye izinto eziqinisiwe. Ngenxa yokuthi i-PCB yakhiwe ngokuqoqwa kwezingqimba eziningi ze-foil yethusi, ungqimba ngalunye lwe-foil yethusi luzombozwa nge-insulating layer, ukuze izendlalelo ze-foil yethusi zingakwazi ukuxhumana, futhi isixhumanisi sesignali sincike emgodini (Via). ), ngakho kunesihloko sesiShayina nge.
Isici siwukuthi: ukuze kuhlangatshezwane nezidingo zamakhasimende, izimbobo zebhodi lesifunda kufanele zigcwaliswe ngezimbobo. Ngale ndlela, ohlelweni lokushintsha inqubo yembobo yepulaki ye-aluminium yendabuko, i-mesh emhlophe isetshenziselwa ukuqedela imaski ye-solder kanye nezimbobo zokuxhuma ebhodini lesifunda ukwenza ukukhiqiza kuzinzile. Ikhwalithi ithembekile futhi uhlelo lokusebenza luphelele kakhulu. I-Vias ikakhulukazi idlala indima yokuxhumana kanye nokuqhutshwa kwamasekhethi. Ngokuthuthuka okusheshayo kwemboni ye-elekthronikhi, izidingo eziphakeme nazo zibekwe phezu kwenqubo kanye nobuchwepheshe bokukhweza phezulu kwamabhodi esekethe aphrintiwe. Inqubo yokuxhuma ngezimbobo isetshenziswa, futhi lezi zidingo ezilandelayo kufanele kuhlangatshezwane nazo ngesikhathi esifanayo: 1. Kukhona ithusi embobeni, futhi imaski ye-solder ingaxhunywa noma cha. 2. Kumelwe kube nethayela nomthofu emgodini, futhi kufanele kube nogqinsi oluthile (4um) okungekho uyinki we-solder mask ongangena embobeni, okuholela ebuhlalu bethayela obufihlekile emgodini. 3. Imbobo yokuphumela kufanele ibe nembobo yepulaki ye-solder, i-opaque, futhi akufanele ibe nezindandatho zikathayela, ubuhlalu bethayela, kanye nezidingo zokuthi flat.
Imbobo eyimpumputhe: Iwukuxhuma isekethe engaphandle kakhulu ku-PCB nesendlalelo sangaphakathi esiseduze ngokufaka izimbobo. Ngenxa yokuthi uhlangothi oluphambene alubonakali, lubizwa ngokuthi yi-blind through. Ngaso leso sikhathi, ukuze kwandiswe ukusetshenziswa kwesikhala phakathi kwezingqimba zesekethe ye-PCB, kusetshenziswa ama-blind vias. Okusho ukuthi, imbobo ye-via endaweni eyodwa yebhodi eliphrintiwe.
Izici: Izimbobo eziyizimpumputhe zitholakala phezulu nangaphansi kwebhodi lesifunda ngokujula okuthile. Zisetshenziselwa ukuxhumanisa umugqa ongaphezulu kanye nomugqa wangaphakathi ngezansi. Ukujula komgodi ngokuvamile akudluli isilinganiso esithile (imbobo). Le ndlela yokukhiqiza idinga ukunakwa okukhethekile ekujuleni kokubhoboza (i-axis Z) ukuze kulunge. Uma unganaki, kuzodala ubunzima e-electroplating emgodini, ngakho-ke cishe akukho mboni eyithathayo. Kungenzeka futhi ukubeka izendlalelo zesifunda ezidinga ukuxhunywa kusengaphambili kuzigaba zesifunda ngasinye. Izimbobo zibhojwa kuqala, bese zinamathiselwe ndawonye, kodwa imishini yokubeka enembe kakhudlwana iyadingeka.
Ama-vias angcwatshiwe ayizixhumanisi phakathi kwanoma yiziphi izendlalelo zesekethe ngaphakathi kwe-PCB kodwa azixhumene nezendlalelo zangaphandle, futhi zisho ngezimbobo ezingadluleli ebusweni bebhodi lesifunda.
Izici: Le nqubo ayikwazi ukufezwa ngokubhoboza ngemuva kokubopha. Kumele ibhojwe ngesikhathi sezingqimba zesifunda ngasinye. Okokuqala, ungqimba lwangaphakathi luboshwe kancane bese lufakwa ngogesi kuqala. Okokugcina, ingahlanganiswa ngokugcwele, okuyi-conductive kakhulu kuneyokuqala. Izimbobo nezimbobo eziyizimpumputhe kuthatha isikhathi esiningi, ngakho intengo ibiza kakhulu. Le nqubo ivame ukusetshenziselwa kuphela amabhodi esekethe aphezulu ukuze kwandiswe isikhala esisebenzisekayo sezinye izingqimba zesifunda
Enqubweni yokukhiqiza ye-PCB, ukubhola kubaluleke kakhulu, hhayi ukunganaki. Ngoba ukubhola ukubhoboza okudingekayo ngokusebenzisa izimbobo ebhodini le-copper clad ukuhlinzeka ngoxhumano lukagesi nokulungisa umsebenzi wedivayisi. Uma ukusebenza kungalungile, kuzoba nezinkinga ohlelweni lokusebenzisa izimbobo, futhi idivayisi ayikwazi ukulungiswa ebhodini lesifunda, elizothinta ukusetshenziswa, futhi ibhodi lonke lizochithwa, ngakho inqubo yokubhoboza ibaluleke kakhulu.