Designing ibhodi yesifunda ephrintiwe (PCB) kuwumsebenzi ojwayelekile wonjiniyela abaningi be-elekthronikhi (i-EE). Naphezu kweminyaka eminingi yokuhlangenwe nakho kokuklanywa kwe-PCB, ukudala imiklamo ye-PCB esezingeni eliphezulu akulula. Kunezici eziningi okufanele uzicabangele, futhi izinto zepuleti zingenye yazo. Izinto eziyisisekelo ezisetshenziselwa ukwenza i-PCBS zibaluleke kakhulu. Ngaphambi kokukhiqiza, kufanele kubhekwe izakhiwo zento enhlobonhlobo, njengokuguquguquka, ukumelana namazinga okushisa, i-dielectric njalo, amandla we-dielectric, amandla we-tensile, ukunamathela nokunye. Ukusebenza nokuhlanganiswa kwebhodi lesifunda kuncike ngokuphelele ezintweni ezisetshenzisiwe. Lo mbhalo uqhubeka nokuhlola izinto ze-PCB. Ngakho hlala ubukele ukuthola eminye imininingwane.

Yiziphi izinhlobo izinto ezisetshenziswa PCB yokukhiqiza?

Lolu uhlu lwezinto ezisemqoka ezisetshenziselwa ukwenza amabhodi wesifunda. Ake sikubheke.

UFr-4: I-FR isifushane nge-FIRE RETARDENT. Kuyinto esetshenziswa kakhulu i-PCB impahla yazo zonke izinhlobo ze-PCB yokukhiqiza. I-fiberglass eqinisiwe i-epoxy laminate FR-4 yenziwa kusetshenziswa indwangu elukiwe ye-fiberglass ne-flame retardant resin binder. Le nto iyathandwa ngoba ihlinzeka ngokufakwa kwegesi okuhle kakhulu futhi inamandla amahle wokukhanda. Le nto inikeza amandla aqine kakhulu. Kuyaziwa ngokukhiqiza okuhle nokumunca umswakama.

Fr-5: I-substrate yenziwe ngezinto eziqinisiwe zengilazi kanye ne-epoxy resin binder. Lokhu kungukukhetha okuhle ekwakhiweni kwebhodi lesifunda elinemigqa eminingi. Isebenza kahle ekushiseni okungenawo umthofu futhi inezindawo ezinhle kakhulu zomshini emazingeni okushisa aphezulu. Kuyaziwa ngokumunca umswakama ophansi, ukumelana namakhemikhali, izakhiwo ezinhle zikagesi namandla amakhulu.

UFr-1 no-FR-2: Wenziwe ngephepha namakhemikhali e-phenolic futhi ulungele ukwakheka kwebhodi lesifunda esisodwa. Zombili lezi zinto zinempahla efanayo, kepha i-FR2 inezinga lokushisa lengilazi eliphansi kune-FR1.

I-Cem-1: Le nto ingeyeqembu lezinto eziyinhlanganisela ze-epoxy materials (CEM). Isethi iqukethe i-epoxy synthetic resin, indwangu ye-fiberglass nomgogodla we-fiberglass. Okokusebenza, okusetshenziselwa amabhodi wesifunda anezinhlangothi ezi-nye, akubizi futhi kuyabuyisa ilangabi. Idume ngokusebenza kwayo okuhle kakhulu kwemishini nogesi.

I-Cem-3: Ifana ne-CEM-1, lokhu kungenye yezinto ezihlanganisiwe ze-epoxy. Inezici ezinciphisa ilangabi futhi isetshenziselwa kakhulu amabhodi wesifunda anezinhlangothi ezimbili. Iqinile kancane ngemishini kune-FR4, kepha ishibhile kune-FR4. Ngakho-ke, kuyindlela enhle ehlukile kune-FR4.

Ithusi: Ithusi yiyona ndlela eyinhloko ekukhiqizeni amabhodi wesifunda angashadile nawama-multilayer. Lokhu kungenxa yokuthi inikela ngamazinga aphezulu wamandla, ukuqhutshwa okuphezulu kokushisa nokushisa kagesi nokusebenza kabusha kwamakhemikhali okuphansi.

I-High Tg: I-High Tg ikhombisa ukushisa kwengilazi ephezulu. Le nto ye-PCB ilungele amabhodi kuzicelo ezifunayo. Izinto ze-Tg zinokuqina okushisa okuphezulu nokuqina kwesikhathi eside kwe-delamination.

URogers: Ngokuvamile ibizwa ngokuthi i-RF, le nto yaziwa ngokuhambisana kwayo nama-laminate e-FR4. Ngenxa yokuhamba kwayo okuphezulu nokuphela kwe-impedance elawulwayo, amabhodi wesifunda ahola phambili angenziwa ngomshini kalula.

I-Aluminium: Le nto ethambile futhi ethambile ye-PCB ivimbela amabhodi ethusi ekushiseni ngokweqile. Yakhethwa ngokuyinhloko ngenxa yekhono layo lokususa ukushisa ngokushesha.

I-aluminium engenaHalogen: Le nsimbi ilungele izinhlelo zokusebenza ezinobungani bemvelo. I-aluminium engenaHalogen ithuthukise ukungafani kwe-dielectric njalo nokusabalalisa umswakama.

Eminyakeni edlule, i-PCBS ithole ukuthandwa okukhulu futhi ithole izicelo eziningi ezimbonini ezidinga izifunda eziyinkimbinkimbi. Ngakho-ke, ukukhetha okulungile kwe-PCB kubaluleke kakhulu, ngoba kuthinta hhayi kuphela ukusebenza nezici, kepha futhi nezindleko zizonke zebhodi. Khetha izinto ezisuselwa kuzidingo zohlelo lokusebenza, izici zemvelo, neminye imikhawulo ebhekane ne-PCB.