Ngokuphuculwa kobuchwepheshe be-PCB kunye nokwanda kwemfuno yabathengi yeemveliso ezikhawulezayo nezinamandla ngakumbi, iPCB itshintshile ukusuka kwibhodi esisiseko enamaleko amabini ukuya kwibhodi enezine, iimaleko ezithandathu kunye ukuya kuthi ga kwishumi ukuya kwamashumi amathathu umaleko wedielectric kunye nabaqhubi. . Kutheni ukwandisa inani leeleya? Ukuba neeleyile ezininzi kunokunyusa ukuhanjiswa kwamandla ebhodi yesekethe, ukunciphisa i-crosstalk, ukuphelisa ukuphazamiseka kwe-electromagnetic kunye nokuxhasa imiqondiso enesantya esiphezulu. Inani leeleya ezisetyenzisiweyo kwi-PCB lixhomekeke kwisicelo, amaxesha okusebenza, ukuxinana kwephini, kunye neemfuno zomaleko wesignali.
Ngokupakisha imigangatho emibini, umaleko ophezulu (oko kukuthi, umaleko 1) usetyenziswa njengomaleko wesignali. I-stack-layer stack isebenzisa iileyile eziphezulu kunye nezantsi (okanye i-1st kunye ne-4th layers) njengoluhlu lwesignali. Kolu lungelelwaniso, uluhlu lwe-2 kunye ne-3 lusetyenziswa njengeenqwelo-moya. Umaleko we-prepreg udibanisa iiphaneli ezimbini okanye ngaphezulu ezinamacala amabini kunye kwaye zisebenza njenge-dielectric phakathi kweeleya. I-PCB enemigangatho emithandathu yongeza iileya ezimbini zobhedu, kwaye iileyile zesibini nezesihlanu zisebenza njengeenqwelomoya. Uluhlu 1, 3, 4, kunye no-6 luphethe imiqondiso.
Qhubekela kwisakhiwo esinemigangatho emithandathu, umaleko wangaphakathi wesibini, ezintathu (xa iyibhodi emacala mabini) kunye neyesine ezintlanu (xa iyibhodi enamacala amabini) njengomaleko ongundoqo, kunye ne-prepreg (PP) zifakwe phakathi kweebhodi ezingundoqo. Ekubeni izinto ze-prepreg azizange zinyangeke ngokupheleleyo, izinto eziphathekayo zithambile kuneyona nto ingundoqo. Inkqubo yokwenziwa kwe-PCB isebenzisa ubushushu kunye noxinzelelo kwisitaki sonke kwaye inyibilikisa i-prepreg kunye nombindi ukuze iileya zibe nokudityaniswa kunye.
Iibhodi ezininzi zongeza ubhedu kunye ne-dielectric layers kwi-stack. Kwi-PCB enesibhozo, imiqolo esixhenxe yangaphakathi yeglue ye-dielectric iileya ezine ezicwangcisiweyo kunye neengqimba ezine zesignali kunye. Iibhodi ezilishumi ukuya kwezilishumi elinambini zonyusa inani leengqimba ze-dielectric, zigcina iiplani ezine zeplani, kwaye zandise inani leempawu zesignali.