Amabhodi esekethe e-PCB angabonwa yonke indawo ezintweni ezisetshenziswayo ezahlukahlukene nezisetshenziswa. Ukuthembeka kwebhodi lesifunda kuyisiqinisekiso esibalulekile sokuqinisekisa ukusebenza okuvamile kwemisebenzi ehlukahlukene. Nokho, emabhodini amaningi wesifunda, sivame ukubona eziningi zazo ziyizindawo ezinkulu zethusi, eziklama amabhodi wesifunda. Kusetshenziswa izindawo ezinkulu zethusi.
Ngokuvamile, indawo enkulu yethusi inemisebenzi emibili. Enye ngeyokuqeda ukushisa. Ngenxa yokuthi ibhodi lesifunda lamanje likhulu kakhulu, amandla ayakhuphuka. Ngakho-ke, ngaphezu kokwengeza izingxenye ezidingekayo zokushisa ukushisa, njengamasinki okushisa, abalandeli bokushisa ukushisa, njll, kodwa kwamanye amabhodi wesifunda, Akwanele ukuthembela kulezi. Uma kuphela ukuchithwa kokushisa, kuyadingeka ukwandisa isendlalelo se-solder ngenkathi ukwandisa indawo ye-foil yethusi, futhi wengeze ithini ukuze kuthuthukiswe ukushisa kokushisa.
Kuyaphawuleka ukuthi ngenxa yendawo enkulu yezingubo zethusi, i-PCB noma i-copper foil adhesion izoncishiswa ngenxa ye-wave wave crest yesikhathi eside noma ukushisa isikhathi eside kwe-PCB, futhi igesi eguquguqukayo eqoqwe kuyo ayikwazi ukuphelelwa amandla. isikhathi. I-foil yethusi iyanda futhi iwa, ngakho-ke uma indawo yethusi inkulu kakhulu, kufanele ucabange ukuthi kunenkinga enjalo, ikakhulukazi uma izinga lokushisa liphakeme kakhulu, ungayivula noma uyiklame njenge-grid mesh.
Okunye ukuthuthukisa ikhono lokulwa nokuphazamiseka kwesekethe. Ngenxa yendawo enkulu yethusi inganciphisa i-impedance yocingo lomhlabathi futhi ivikele isignali ukuze kuncishiswe ukuphazamiseka okuhlangene, ikakhulukazi kwamanye amabhodi we-PCB anesivinini esikhulu, ngaphezu kokuqinisa ucingo lomhlabathi ngangokunokwenzeka, ibhodi lesifunda liyadingeka. . Ground zonke izindawo zamahhala, okungukuthi, "umhlabathi ogcwele", onganciphisa ngempumelelo inductance ye-parasitic, futhi ngesikhathi esifanayo, indawo enkulu yomhlabathi inganciphisa ngokuphumelelayo imisebe yomsindo. Isibonelo, kwezinye izifunda ze-chip chip, inkinobho ngayinye imbozwe ngocingo oluphansi, okunciphisa ikhono lokulwa nokuphazamiseka.