Emhlabeni wezinto zikagesi othuthukayo ngokushesha, isidingo samadivayisi ahlangene, angasindi kanye nasebenza kahle kakhulu siholele ekwamukelweni okusabalele kwama-PCB aqinile aguquguqukayo (ama-PCB Esifunda Aphrintiwe). Lawa mabhodi esekethe asungulayo ahlanganisa izici ezinhle kakhulu zama-PCB aqinile navumelana nezimo ukuze anikeze ukwethembeka nokusebenza okuthuthukisiwe. Kodwa-ke, ukuklama i-PCB eguquguqukayo eqinile kudinga ukucatshangelwa ngokucophelela kwezinto ezihlukahlukene ukuze kuqinisekiswe ubuqotho besignali obufanele, ukuphathwa okushisayo, namandla emishini. Lesi sihloko sihlola ukucatshangelwa okubalulekile lapho uklama izendlalelo ze-PCB eziguquguqukayo eziqinile, kugxilwe kugqinsi lwesendlalelo, inani lezendlalelo, imithetho yokuklama, nokuhlanganisa nokuhlola.
Ugqinsi lwesendlalelo kanye nenani lezendlalelo
Esinye sezici ezibucayi kakhulu ze-rigid-flex laminate design ukunquma ukujiya kongqimba olufanele kanye nenani lezendlalelo. Ukujiya kwesendlalelo ngasinye kuthinta ngqo ukusebenza nokuthembeka kwe-PCB. Izendlalelo eziwugqinsi zinikeza amandla angcono emishini nokuphatha okushisayo, kuyilapho izendlalelo ezizacile zithuthukisa ukuguquguquka futhi zehlise isisindo.
Lapho uklama ama-PCB aguquguqukayo aqinile, kufanele kube nebhalansi phakathi kwalezi zici. Ukupakishwa kwezingqimba eziningi kungathuthukisa ubuqotho besignali ngokunikeza isivikelo esingcono nokunciphisa ukuphazamiseka kwe-electromagnetic (EMI). Nokho, ukwandisa inani lezendlalelo kwenza inqubo yokukhiqiza ibe nzima futhi kungase kubangele izindleko eziphakeme. Ngakho-ke, abaklami kufanele bahlole ngokucophelela izidingo ezithile zohlelo lokusebenza ukuze banqume ukucushwa kwesendlalelo esifanele.
Ukucatshangelwa kobuqotho besignali
Ubuqotho besignali bubalulekile ekwakhiweni kwe-PCB eguquguqukayo, ikakhulukazi ezinhlelweni zokusebenza ezinesivinini esikhulu. Isakhiwo se-PCB kufanele sinciphise ukulahlekelwa kwesignali nokuhlanekezela, okungazuzwa ngomzila ocophelelayo nokupakishwa kwesendlalelo. Abaklami kufanele bacabangele izici ezilandelayo ukuze bathuthukise ubuqotho besignali:
Ukulawula Impedance:Ukugcina i-impedance engaguquki kuyo yonke i-PCB kubalulekile ekunciphiseni ukucabanga nokuqinisekisa ubuqotho besignali. Lokhu kungafezwa ngokulawula ububanzi bokulandelela kanye nesikhala phakathi kwamathrekhi.
Izindiza Eziphansi Nezamandla:Ukusebenzisa umhlabathi ozinikele kanye nezindiza zamandla kusiza ukunciphisa umsindo futhi kuthuthukise ubuqotho besignali. Lezi zindiza zinikeza indlela ephansi ye-impedance yokubuyisela okwamanje, okubalulekile kumasignali anesivinini esikhulu.
Ngesakhiwo:Isakhiwo kanye nohlobo lwama-vias asetshenziswe ekwakhiweni kungathinta kakhulu ubuqotho besignali. I-Vis eyimpumputhe nengcwatshiwe isiza ukufinyeza ubude bendlela yesiginali futhi inciphise ukugudluzwa, kuyilapho ukubekwa ngokucophelela kungavimbela ukungqubuzana phakathi kokulandela okuseduze.
Imithetho yokuklama okufanele ilandelwe
Ukunamathela emithethweni yokuklama emisiwe kubalulekile ekuqinisekiseni ukwethembeka kwama-PCB aguquguqukayo. Eminye imithetho yedizayini ebalulekile okufanele icatshangelwe ihlanganisa:
Imbobo encane:Usayizi omncane wokuvula we-vias namaphedi kufanele uchazwe ngokusekelwe emandleni okukhiqiza. Lokhu kuqinisekisa ukuthi ama-PCB angakhiqizwa ngendlela enokwethenjelwa futhi ngaphandle kwamaphutha.
Ububanzi bomugqa nesikhala:Ububanzi nesikhala sokulandela umkhondo kufanele kubalwe ngokucophelela ukuze kuvinjwe izinkinga ezifana namasekhethi amafushane kanye nokunciphisa amasignali. Abaklami kufanele babhekisele kumazinga e-IPC ukuze bathole isiqondiso kububanzi obuncane bemigqa nesikhala.
Ukuphatha Okushisayo:Ukuphatha okushisayo okusebenzayo kubalulekile ekugcineni ukusebenza nokuthembeka kwama-PCB aguquguqukayo aqinile. Abaklami kufanele bacabangele i-thermal vias namasinki okushisa ukuze basuse ukushisa okukhiqizwa izingxenye zamandla aphezulu.
Inothi lokuhlanganisa kanye nokuhlola
Inqubo yokuhlanganisa yama-PCB aqinile aguquguqukayo iveza izinselelo eziyingqayizivele okufanele zixazululwe phakathi nesigaba sokuklama. Ukuqinisekisa inqubo yokuhlanganisa eshelelayo, abaklami kufanele:
Gcina isikhala sesixhumi:Indawo eyanele kufanele ibekelwe izixhumi nezinye izingxenye ukuze kube lula ukuhlanganisa nokugcinwa. Lokhu kubaluleke kakhulu kumiklamo ehlangene lapho isikhala silinganiselwe.
Isakhiwo Sephoyinti Lokuhlola:Ukufaka amaphuzu okuhlola ekwakhiweni kwenza ukuhlola nokuxazulula inkinga kube lula ngesikhathi sokuhlanganisa. Abaklami kufanele babeke amaphuzu okuhlola ngobuchule ukuze baqinisekise ukufinyeleleka ngaphandle kokuthikameze isakhiwo sisonke.
Irediyasi yokuguquguquka nokugoba:Idizayini kufanele icabangele ukuguquguquka kwe-PCB, ikakhulukazi ezindaweni lapho ukugoba kuzokwenzeka khona. Abaqambi kufanele babambelele ku-radius enconyiwe yokugoba ukuvimbela ukulimala ku-PCB ngesikhathi sokusetshenziswa.
Ukuba nokwenzeka kwenqubo yokukhiqiza ye-PCB eqinile-flex
Okokugcina, ukuba nokwenzeka kwenqubo yokukhiqiza ye-PCB eqinile kufanele kubhekwe ngesikhathi sesigaba sokuklama. Ubunkimbinkimbi bomklamo buthinta amandla okukhiqiza nezindleko. Abaklami kufanele basebenzisane eduze nomkhiqizi we-PCB ukuze baqinisekise ukuthi umklamo ungakhiqizwa kahle futhi ngaphakathi kwesabelomali.
Kafushane, ukuklama ama-PCB aqinile-flex kudinga ukuqonda okuphelele kwezinto ezithinta ukwethembeka nokusebenza. Ngokucabangela ngokucophelela ukushuba kongqimba, ubuqotho besignali, imithetho yokuklama, nezidingo zokuhlanganisa nokuhlola, abaklami bangakha ama-PCB aguquguqukayo ahlangabezana nezidingo zezinhlelo zokusebenza zesimanje ze-elekthronikhi. Njengoba ubuchwepheshe buqhubeka buthuthuka, ama-PCB aqinile azokhula ngokubaluleka embonini ye-elekthronikhi, ngakho abaklami kufanele bahlale benolwazi mayelana nezinqubo ezihamba phambili namathrendi avelayo ekwakhiweni kwe-PCB.
Isikhathi sokuthumela: Nov-10-2024
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