I-conductor eyinhloko esetshenziswa kuma-PCB yiucwecwe lwethusi, esetshenziselwa ukudlulisa amasignali namaza.Ngasikhathi sinye, ucwecwe lwethusi kuma-PCB lungasetshenziswa futhi njengendiza eyireferensi yokulawula ukuthinta kolayini wokudlulisela, noma njengesihlangu sokucindezela ukuphazamiseka kwe-electromagnetic (EMI).Ngesikhathi esifanayo, enqubweni yokukhiqiza ye-PCB, amandla e-peel, ukusebenza kwe-etching nezinye izici ze-copper foil kuzophinde kuthinte ikhwalithi nokuthembeka kokukhiqizwa kwe-PCB.Onjiniyela Besakhiwo se-PCB badinga ukuqonda lezi zici ukuze baqinisekise ukuthi inqubo yokukhiqiza ye-PCB ingenziwa ngempumelelo.
I-foil yethusi yamabhodi wesekethe ephrintiwe ine-foil yethusi ye-electrolytic (i-electrodeposited ED copper foil) kanye ne-calendered copper foil (rolled annealed RA ucwecwe lwethusi) izinhlobo ezimbili, eyokuqala ngokusebenzisa indlela yokukhiqiza i-electroplating, eyokugcina ngokusebenzisa indlela yokukhiqiza.Kuma-PCB aqinile, amafoyili ethusi e-electrolytic asetshenziswa kakhulu, kuyilapho amafoyili ethusi agoqiwe asetshenziselwa ikakhulukazi amabhodi esekethe aguquguqukayo.
Kuzinhlelo zokusebenza kumabhodi esekethe aphrintiwe, kunomehluko omkhulu phakathi kwamafoyili ethusi e-electrolytic kanye ne-calendered.I-Electrolytic copper foil inezici ezihlukene ezindaweni zazo ezimbili, okungukuthi, ukuhlukumeza kwezindawo ezimbili ze-foil akufani.Njengoba amaza omjikelezo namazinga enyuka, izici ezithile zama-foil ethusi zingase zithinte ukusebenza kwemvamisa ye-millimeter wave (mm Wave) kanye nesekhethi yedijithali yejubane eliphezulu (HSD).Ubulukhuni be-foil ye-copper bungathinta ukulahleka kokufakwa kwe-PCB, ukufana kwesigaba, kanye nokulibaziseka kokusabalalisa.Ubulukhuni be-foil ye-copper bungabangela ukuhluka ekusebenzeni kusuka ku-PCB eyodwa kuya kwenye kanye nokuhluka kokusebenza kukagesi kusuka ku-PCB eyodwa kuya kwenye.Ukuqonda indima yama-foil ethusi ekusebenzeni okuphezulu, amasekhethi anesivinini esikhulu angasiza ekuthuthukiseni nasekulingiseni ngokunembe kakhulu inqubo yokuklama ukusuka kumodeli ukuya kusekethe yangempela.
Ubulukhuni bobuso befoyili yethusi bubalulekile ekukhiqizeni i-PCB
Iphrofayili yangaphezulu eqinile isiza ukuqinisa ukunamathela kwe-foil yethusi ohlelweni lwe-resin.Kodwa-ke, iphrofayili engaphezulu ingase idinge izikhathi zokuqopha ezinde, ezingathinta ukukhiqiza kwebhodi nokunemba kwephethini yomugqa.Ukwenyuka kwesikhathi sokuqopha kusho ukwanda kokunamathiselwa kwe-lateral kwekhondatha kanye nokunamathisela ohlangothini oluqine kakhulu lwekhondatha.Lokhu kwenza ulayini ocolekile nokulawulwa kwe-impedance kube nzima kakhulu.Ukwengeza, umthelela we-foil yethusi emangelengele ekuncishweni kwesignali kubonakala njengoba imvamisa yokusebenza kwesekethi ikhula.Kumafrikhwensi aphezulu, amasignali amaningi kagesi adluliselwa ebusweni bekhondatha, futhi indawo emagebhugebhu ibangela ukuthi isignali ihambe ibanga elide, okuholela ekuncipheni okukhulu noma ekulahlekeni.Ngakho-ke, ama-substrates asebenza kahle kakhulu adinga ama-foil ethusi anokhahlo oluphansi anokunamathela okwanele ukuze afane nezinhlelo ze-resin ezisebenza kahle kakhulu.
Nakuba izinhlelo zokusebenza eziningi kuma-PCB namuhla zinogqinsi lwethusi oluyi-1/2oz (cishe u-18μm), 1oz (cishe. 1μm, kuyilapho ngakolunye uhlangothi ubukhulu bekhopha obungu-100μm noma ngaphezulu buzobaluleka futhi ngenxa yezinhlelo zokusebenza ezintsha (isb. ugesi wezimoto, izibani ze-LED, njll.)..
Futhi ngokuthuthukiswa kwamagagasi angu-5G millimeter kanye nezixhumanisi ze-serial ezinesivinini esikhulu, isidingo sama-foil ethusi anamaphrofayili aphansi akhuphuka ngokusobala.
Isikhathi sokuthumela: Apr-10-2024