Ibhodi lesifunda eliphrintiwe yakhiwe ngezingqimba zamasekethe e-foil yethusi, futhi ukuxhumana phakathi kwezingqimba ezihlukene zesekethe kuncike kulezi "vias".Lokhu kungenxa yokuthi ukukhiqizwa kwebhodi lesifunda lanamuhla lisebenzisa izimbobo ezibhoboziwe ukuxhuma amasekhethi ahlukene.Phakathi kwezingqimba zesifunda, kufana nesiteshi sokuxhuma somzila wamanzi ongaphansi komhlaba onezingqimba eziningi.Abangane abadlale umdlalo wevidiyo othi "Mfowethu Mary" bangase baqaphele ukuxhunywa kwamapayipi amanzi.Umehluko ukuthi amapayipi amanzi ayadingeka ukuze avumele amanzi ukuba ajikeleze ( Akufanele kubhojwe uMfoweth 'uMary), futhi inhloso yokuxhuma ibhodi lesifunda ukushayela ugesi ngezici zikagesi, ngakho-ke kubizwa ngokuthi i-via hole, kodwa uma usebenzisa i-drill kuphela noma i-laser ukubhoboza umgodi, ngeke kuqhube ugesi.Ngakho-ke, ungqimba lwezinto eziqhutshwayo (ngokuvamile "ithusi") kufanele kufakwe i-electroplated phezu kwembobo ebhoboziwe, ukuze ama-electron angakwazi ukuhamba phakathi kwezingqimba ze-foil zethusi ezihlukene, ngoba ubuso bomgodi wokuqala obunjiwe yi-resin kuphela engenzi lutho. hambisa ugesi we.
Ngembobo: UkuPlating Through Hole okubizwa ngokuthi i-PTH
Lolu uhlobo oluvame kakhulu lwe-via hole.Udinga kuphela ukuthatha i-PCB futhi ubhekane nokukhanya, imbobo engabona ukukhanya okukhanyayo "ngomgodi".Lona futhi uhlobo olulula kakhulu lwembobo, ngoba lapho ulwenza, udinga kuphela ukusebenzisa i-drill noma i-laser ukuze ubhoboze ibhodi lesifunda, futhi izindleko zishibhile.Kodwa ngakolunye uhlangothi, ezinye izingqimba zesifunda azidingi ukuxhuma lezi ngezimbobo.Ngokwesibonelo, sinendlu enezitezi eziyisithupha.Ibhere elisebenzayo linemali eningi.Ngithenge isitezi sayo sesithathu nesesine.Khona-ke, ibhere elisebenzayo ngokwalo lisesitezi sesithathu.Isitezi sakhiwe phakathi kwesitezi sesine ukuze sixhumane, futhi ibhere elisebenzayo alidingi ukuxhuma kwezinye izitezi.Ngalesi sikhathi, uma esinye isitebhisi siklanyelwe ukudlula esitezi ngasinye sisuka kwesokuqala siye kwesesithupha, sizomoshakala.Ngebhodi lesifunda samanje Intshi yegolide akufanele ivunyelwe.Ngakho nakuba ngokusebenzisa izimbobo ishibhile, ngezinye izikhathi basebenzisa isikhala esiningi se-PCB.
Imbobo Eyimpumputhe: I-Blind Via Hole (BVH) Isifunda sangaphandle se-PCB sixhunywe kungqimba lwangaphakathi oluseduze ngembobo ehlanganisiwe, kodwa aludluli, ngoba uhlangothi oluphambene alukwazi ukubonakala, ngakho lubizwa ngokuthi "umgodi oyimpumputhe".Ukuze kwandiswe ukusetshenziswa kwendawo kongqimba lwesekethe ye-PCB, kuvele inqubo "eyimpumputhe nge".Le ndlela yokukhiqiza idinga ukunakwa okukhethekile ekujuleni kokubhoboza (i-axis Z) ukuthi ilungile, kodwa le ndlela ivame ukudala ubunzima e-electroplating emgodini, ngakho-ke cishe akekho umenzi owamukele. Kungenzeka futhi ukubhoboza izimbobo zezingqimba zesifunda ezidinga ukuxhunyaniswa ezingxenyeni zesifunda ngasinye kusengaphambili, bese uzihlanganisa ndawonye.Ibhodi elingu-2+4 livuliwe, kodwa lokhu kudinga indawo enembe kakhudlwana nedivayisi yokuqondanisa. Thatha isibonelo esingenhla sokuthenga isakhiwo.Indlu enezitezi eziyisithupha inezitebhisi kuphela ezixhuma esitezi sokuqala nesesibili, noma izitebhisi ezixhuma esitezi sesihlanu nesitezi sesithupha, ezibizwa ngokuthi izimbobo eziyizimpumputhe. "Izimbobo eziyizimpumputhe" ziyizimbobo ezingabonakala ohlangothini olulodwa lokubukeka kwebhodi, kodwa hhayi olunye uhlangothi lwebhodi.
Ungcwatshwe nge-: Buried Via Hole (BVH) Noma isiphi isendlalelo esingaphakathi kwe-PCB sixhunyiwe kodwa asixhunyiwe kungqimba olungaphandle.Le nqubo ayikwazi ukufezwa ngokubhoboza ngemuva kokubopha.Kumele ibhojwe ngezingqimba zesekhethi ngayinye.Ngemuva kokuthi ungqimba lwangaphakathi luboshwe ngokwengxenye, kufanele lufakwe ugesi ngaphambi kokuthi luboshwe ngokugcwele.Uma kuqhathaniswa neyokuqala "ngembobo" Futhi "izimbobo eziyizimpumputhe" zidinga abasebenzi abaningi, ngakho intengo ibiza kakhulu.Le nqubo ivamise ukusetshenziselwa kuphela amabhodi esekethe e-high-density (HDI) ukuze kwandiswe isikhala esisebenzisekayo sezinye izendlalelo zesekethe.Thatha isibonelo sokuthenga isakhiwo ngenhla.Indlu enezitezi eziyisithupha kuphela inezitebhisi ezixhuma isitezi sesithathu nesesine, ezibizwa ngokuthi izimbobo ezigqitshiwe. "Imbobo engcwatshiwe" isho ukuthi umgodi awukwazi ukubonakala kusukela ekubukeni kwebhodi, kodwa umgodi wangempela ugqitshwe engxenyeni yangaphakathi yebhodi lesifunda.
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