Ngokuthuthukiswa kobuchwepheshe be-PCB kanye nokwanda kwesidingo sabathengi semikhiqizo esheshayo nenamandla, i-PCB isishintshile isuka ebhodini elinezingqimba ezimbili ukuya ebhodini elinezingqimba ezine, eziyisithupha kanye nezingqimba ezifika kweziyishumi kuya kwezingamashumi amathathu ze-dielectric nama-conductor. . Kungani ukwandisa inani lezendlalelo? Ukuba nezendlalelo eziningi kungakhuphula ukusatshalaliswa kwamandla ebhodi lesifunda, kunciphise i-crosstalk, kuqede ukuphazamiseka kwe-electromagnetic futhi kusekele amasignali anesivinini esikhulu. Inani lezendlalelo ezisetshenziselwa i-PCB lincike kuhlelo lokusebenza, imvamisa yokusebenza, ukuminyana kwephini, kanye nezidingo zesendlalelo sesiginali.

Ngokubeka izingqimba ezimbili, ungqimba olungaphezulu (okungukuthi, ungqimba 1) lusetshenziswa njengongqimba lwesignali. Isitaki esinezendlalelo ezine sisebenzisa izendlalelo ezingaphezulu nezingaphansi (noma isendlalelo soku-1 nesi-4) njengongqimba lwesignali. Kulokhu kucushwa, izingqimba ze-2 ne-3 zisetshenziswa njengezindiza. Isendlalelo se-prepreg sibopha amaphaneli amabili noma ngaphezulu anezinhlangothi ezimbili ndawonye futhi asebenze njenge-dielectric phakathi kwezingqimba. I-PCB enezingqimba eziyisithupha ingeza izendlalelo ezimbili zethusi, futhi isendlalelo sesibili nesesihlanu sisebenza njengezindiza. Izendlalelo 1, 3, 4, kanye no-6 ziphethe amasignali.

Qhubekela esakhiweni esinezingqimba eziyisithupha, ungqimba lwangaphakathi olubili, oluthathu (uma kuyibhodi elinezinhlangothi ezimbili) kanye nesesine ezinhlanu (uma kuyibhodi elinezinhlangothi ezimbili) njengongqimba oluyisisekelo, kanti i-prepreg (PP) kuhlanganiswe phakathi kwamabhodi awumongo. Njengoba impahla ye-prepreg ingazange yelapheke ngokugcwele, impahla ithambile kune-core material. Inqubo yokukhiqiza ye-PCB isebenzisa ukushisa nokucindezela kuso sonke isitaki futhi incibilikisa i-prepreg kanye nomongo ukuze izendlalelo zihlanganiswe ndawonye.

Amabhodi amaningi engeza izendlalelo zethusi neze-dielectric kusitaki. Ku-PCB enezingqimba eziyisishiyagalombili, imigqa eyisikhombisa yangaphakathi yeglue ye-dielectric izingqimba ezine ze-planar kanye nezingqimba ezine zamasignali ndawonye. Amabhodi anezingqimba eziyishumi kuya kweziyishumi nambili akhulisa inani lezendlalelo ze-dielectric, agcina izendlalelo ezine ezihleliwe, futhi andise inani lezendlalelo zesignali.