I-A through hole ngumngxuma odlula kumkhondo kwi-a PCB Umaleko, kunye nenjongo yawo eyodwa kukudibanisa komnye umkhondo komnye umaleko. Ngokuqhelekileyo zifumaneka kwi-PCBs ezinomaleko amaninzi, ezifuna ukuba umaleko ngamnye udityaniswe ngendlela enye okanye enye.

Kukho iinguqulelo ezintathu ezahlukeneyo ze-vias ezinokudityaniswa kuyo nayiphi na i-PCB eninzi:

Vis Blind: Badibanisa umaleko ongaphandle PCB ukuya kumaleko yangaphakathi PCB, kodwa akukho okunye. Ngoko ke, ukuba sine-PCB ene-four-layer, iileya ezimbini zokuqala ziya kuba nemingxunya egqojoziweyo, kodwa hayi owesithathu okanye wesine.

Wangcwatywa vias: Badibanisa ezimbini okanye ngaphezulu umaleko lwangaphakathi omnye komnye. Kwakhona, kwi-PCB yethu ene-four-layer, i-second and third layers iya kubhobhozwa kwaye idibaniswe, ngelixa iileyile zangaphandle (i-first and four layers) aziyi kubonisa nayiphi na imingxuma kwaye zibukeke njengebhodi Indawo engenanto.

Vias: Njengoko usenokuba sele waziqonda ngoku, ezi zombiwa ngokwelizwi kwibhodi yonke ukudibanisa umaleko wokuqala nowesine womaleko wangaphandle (okanye ezinye iindibaniselwano ezidibanisa iileya ezine kunye).

Ngokufana netyhubhu eluhlaza kaMario, umngxuma odlulayo udlula kwiPCB kwaye uqhagamshela iintambo zomkhondo ezinamaleko amaninzi.

Khuthaza ukukhula koyilo lwakho ngokuqonda ngokuchanekileyo

Kumsebenzi wonke wokusindisa inkosazana, akubonakali kubaluleke kakhulu, ngaphandle kwento yokuba ezi ityhubhu eziluhlaza azibonakali ziluncedo, kuba kuyanelisa ukutsiba kwelinye icala, iVias idlala. indima ebalulekileyo kwiiPCB zamanqanaba amaninzi.

Amaxesha amaninzi, kungcono kwakhona kule minyaka incinci, kwaye sishiywe ngumsebenzi wokugcina indawo eninzi kangangoko. Nge-vias, ngokwethiyori ngoku siyakwazi ukudlula zonke izithuba ezikumphezulu ongaphezulu ukuze sibe indlela yokulandela umkhondo (zonke izinto zethu zihleli apho) kwaye sihambise yonke into efunekayo kwinqanaba lesibini, lesithathu okanye lesine. Kubaqulunqi abafuna iindlela zokugcina indawo, oku kunokuba yi-godsend.

Xa ukuphumeza vias imfama, vias wangcwatywa okanye vias ngomngxuma kwibhodi yakho yesekethe, enye inzuzo oya kufumana kukunciphisa capacitance parasitic phakathi umkhondo, kungenjalo kuya kubangela umonakalo omkhulu kuyilo yakho. Oku kuncitshiswa kwe-parasitic capacitance kubangelwa ukuphuculwa kokunciphisa imikhondo. Nangona kungesona sizathu siphambili, ukuba uyilo luchanekile, ngokuqinisekileyo uya kuzuza ngokudibanisa i-vias kuyilo.

Ukunyamezelwa kokugrumba kufuneka kuchaneke kakhulu ukuphumeza ngempumelelo i-vias kuyilo.

Ezinye izinto eziqwalaselwayo phambi kokuphumelela isicelo

Nangona unokutsiba uphume esihlalweni sakho kwaye ujonge indawo yokungena, bamba ihashe lakho, kuba kukho izinto ezingeloncedo ukongeza izihluzi kuyilo lwakho (kutheni kusoloko kukho izinto ezingeloncedo?!).

Iibhodi ze-Vias kunye ne-multilayer ziqhutywa kunye. Xa usenza nayiphi na imisebenzi kwiibhodi zeesekethe ezininzi, iindleko zeendleko kufuneka ziqwalaselwe. Oku kuquka ukugrumba emingxunyeni ngendlela efanayo, hayi nje umngxuma omnye, kodwa ezimbini, ezintathu, okanye ezine iibhodi. Ukuba kukho impazamo encinci yokunyamezela kwinkqubo yokomba kunye nokupakisha, ibhodi yesekethe inokuba yinkunkuma.

Ukunciphisa le meko, abavelisi kufuneka banciphise oomatshini babo kunye nokunyamezela kwiqhezu le-millimeter, ngokuqinisekileyo kuya kwandisa iindleko zokwenziwa kunye nenkqubo yokuhlanganisa. Njengesiqhelo, qiniseka ukuba unxibelelana nomenzi wakho kwangethuba ukuze ufumane imida kunye nobuchule bakhe phambi kokuba uhambe emngxunyeni womvundla (okanye ityhubhu eluhlaza, nokuba yeyiphi na oyifunayo).