Imbobo ethi A through hole iyimbobo edlula umkhondo ku-a PCB ungqimba, futhi inhloso yayo kuphela ukuxhuma komunye umkhondo kolunye ungqimba. Ngokuvamile atholakala kuma-PCB anezingqimba eziningi, adinga ungqimba ngalunye ukuthi luxhunywe ngendlela eyodwa noma enye.

Kunezinhlobo ezintathu ezahlukene ze-vias ezingafakwa kunoma iyiphi i-PCB ye-multilayer:

Ama-Blind vias: Axhuma ungqimba lwangaphandle lwe-PCB kungqimba lwangaphakathi lwe-PCB, kodwa akusekho okunye. Ngakho-ke, uma sine-PCB enezingqimba ezine, izingqimba ezimbili zokuqala zizobhobozwa izimbobo, kodwa hhayi ungqimba lwesithathu noma lwesine.

I-Buried vias: Baxhuma izingqimba ezimbili noma ngaphezulu zangaphakathi komunye nomunye. Futhi, ku-PCB yethu enezingqimba ezine, izingqimba zesibili nezesithathu zizobhobolwa futhi zixhunywe, kuyilapho izingqimba zangaphandle (izendlalelo zokuqala nezesine) ngeke zibonise noma yiziphi izimbobo futhi zibukeke njengebhodi Indawo engenalutho.

I-Vias: Njengoba kungenzeka ukuthi usuyifundile manje, lezi zimbozwa izwi nezwi kulo lonke ibhodi ukuze kuxhunywe izendlalelo zokuqala nezesine zesendlalelo esingaphandle (noma ezinye izinhlanganisela ezixhuma izingqimba ezine ndawonye).

Ngokufana neshubhu eliluhlaza lika-Mario, imbobo edlulayo idlula ku-PCB futhi ixhuma izintambo zokulandela umkhondo ezinezingqimba eziningi.

Khuthaza ukukhula komklamo wakho ngokuqonda kahle

Kuwo wonke umsebenzi wokusindisa inkosazana, akubonakali kubalulekile, ngaphandle kweqiniso lokuthi la mashubhu aluhlaza abonakala engenanzuzo, ngoba kuyanelisa kakhulu ukungena. Ngakolunye uhlangothi, i-Vias iyadlala. indima ebalulekile kuma-PCB anezingqimba eziningi.

Izikhathi eziningi, kuba ngcono futhi kule minyaka encane, futhi sisele nomsebenzi wokonga indawo enkulu ngangokunokwenzeka. Ngama-vias, ngokwembono manje sesiyakwazi ukudlula zonke izikhala ezisesigabeni esingaphezulu ukuze sintshontshe umzila wokulandela umkhondo (zonke izingxenye zethu zihlezi lapho) futhi sihambise yonke into edingekayo kungqimba lwesibili, lwesithathu noma ngisho lwesine. Kubaklami abafuna amasu okonga isikhala, lokhu kungase kube i-godsend.

Lapho usebenzisa i-vias eyimpumputhe, i-vias engcwatshwe noma nge-hole vias ebhodini lakho lesifunda, enye inzuzo ozoyithola ukunciphisa amandla e-parasitic phakathi kweminonjana, ngaphandle kwalokho kuzodala umonakalo omkhulu kumklamo wakho. Lokhu kuncipha kwe-parasitic capacitance kungenxa yokuthuthukiswa kokunciphisa iminonjana. Nakuba kungesona isizathu esiyinhloko, uma umklamo ulungile, ngokuqinisekile uzozuza ngokungeza i-vias kumklamo.

Ukubekezelela ukumba kufanele kucace kakhulu ukuze kusetshenziswe ngempumelelo i-vias ekwakhiweni.

Okunye okucatshangelwayo ngaphambi kokudlulisa isicelo

Nakuba ungase ugxume uphume esihlalweni sakho futhi ubheke indawo yokungena ngemvume, bamba ihhashi lakho, ngoba kukhona ububi bokwengeza izihlungi kumklamo wakho (kungani kuhlale kunemibi?!).

Amabhodi we-Vias nama-multilayer aphathwa ndawonye. Lapho wenza noma yimiphi imisebenzi kumabhodi esekethe amaningi, izici zezindleko kufanele zicatshangelwe. Lokhu kuhlanganisa ukubhoboza izimbobo endaweni efanayo ncamashi, hhayi nje umgodi owodwa, kodwa amabhodi amabili, amathathu, noma amane. Uma kukhona ngisho nephutha elincane lokubekezelela inqubo yokumba nokupakisha, ibhodi lesifunda lingase libe udoti.

Ukunciphisa lesi simo, abakhiqizi kumele banciphise imishini yabo kanye nokubekezelelana kwabo kube yingxenye yemilimitha, okuzokwandisa izindleko zenqubo yokukhiqiza nokuhlanganisa. Njengenjwayelo, qiniseka ukuthi uthintana nomkhiqizi wakho kusenesikhathi ukuze uthole imikhawulo namandla akhe ngaphambi kokuba uhambe embobeni onogwaja (noma ishubhu eliluhlaza, noma yikuphi okukhethayo).