Iibhodi zesekethe ze-PCB zinokubonwa kuyo yonke indawo kwizixhobo ezahlukeneyo zesicelo kunye nezixhobo. Ukuthembeka kwebhodi yesekethe kuyisiqinisekiso esibalulekileyo sokuqinisekisa ukusebenza okuqhelekileyo kwemisebenzi eyahlukeneyo. Nangona kunjalo, kwiibhodi ezininzi zeesekethe, sihlala sibona ezininzi zazo ziindawo ezinkulu zobhedu, ukuyila iibhodi zeesekethe. Iindawo ezinkulu zobhedu zisetyenziswa.
Ngokuqhelekileyo, indawo enkulu yobhedu inemisebenzi emibini. Enye yeyokuchitha ubushushu. Ngenxa yokuba ibhodi yesiphaluka yangoku inkulu kakhulu, amandla aphakama. Ngoko ke, ukongeza ukongeza amacandelo ayimfuneko ukutshatyalaliswa ubushushu, ezifana izitsini ubushushu, iifeni ukutshatyalaliswa ubushushu, njl, kodwa kwezinye iibhodi zesekethe, Akwanelanga ukuthembela kwezi. Ukuba kuphela ukutshatyalaliswa kobushushu, kuyimfuneko ukwandisa i-soldering layer ngelixa ukwandisa indawo ye-foil yobhedu, kwaye ungeze i-tin ukunyusa ukutshatyalaliswa kobushushu.
Kubalulekile ukuba uqaphele ukuba ngenxa yendawo enkulu yobhedu, i-PCB okanye i-copper foil adhesion iya kuncitshiswa ngenxa ye-wave wave crest yexesha elide okanye ukufudumeza kwexesha elide le-PCB, kunye negesi eguquguqukayo eqokelelwe kuyo ayikwazi ukuphelelwa amandla. ixesha. I-foil yobhedu yanda kwaye iyawa, ngoko ke ukuba indawo yobhedu inkulu kakhulu, kufuneka ucinge ukuba kukho ingxaki enjalo, ngakumbi xa izinga lokushisa liphezulu, unokuyivula okanye uyilo njenge-mesh yegridi.
Enye kukuphucula amandla okuthintela ukuphazamiseka kwesekethe. Ngenxa yommandla omkhulu wobhedu unokunciphisa i-impedance yocingo lomhlaba kwaye ukhusele umqondiso wokunciphisa ukuphazamisana, ngakumbi kwiibhodi zePCB ezinesantya esiphezulu, ngaphezu kokunciphisa ucingo lomhlaba kangangoko kunokwenzeka, ibhodi yesekethe iyimfuneko. . Ground zonke iindawo ezikhululekileyo, oko kukuthi, "umhlaba ogcweleyo", onokunciphisa ngokufanelekileyo i-parasitic inductance, kwaye kwangaxeshanye, indawo enkulu yomhlaba inokunciphisa ngempumelelo imisebe yengxolo. Ngokomzekelo, kwezinye iisekethe ze-chip chip, iqhosha ngalinye ligutyungelwe ngocingo oluphantsi, olunciphisa amandla okuthintela ukuphazamiseka.