Amabhodi Esifunda Aphrintiwe (ama-PCB) ayingxenye ebalulekile yamadivayisi kagesi esimanje, asebenza njengesisekelo sezingxenye ezenza la madivayisi asebenze. Ama-PCB aqukethe izinto ezingaphansi komhlaba, ngokuvamile ezenziwe nge-fiberglass, ezinezindlela zokuhambisa eziqoshwe noma eziphrintiwe ebusweni ukuze kuxhunywe izingxenye ezahlukene ze-elekthronikhi. Isici esibalulekile sokukhiqizwa kwe-PCB ukubopha, okudlala indima ebalulekile ekuqinisekiseni ukusebenza nokuthembeka kwe-PCB. Kulesi sihloko, sizohlola inqubo yokubopha i-PCB, ukubaluleka kwayo, kanye nezinhlobo ezahlukene zokubopha ezisetshenziswa ekukhiqizweni kwe-PCB.
Kuyini i-PCB Plating?
Ukufakwa kwe-PCB kuyinqubo yokufaka ungqimba oluncane lwensimbi phezu kobuso be-PCB substrate kanye nezindlela zokuhambisa umoya. Lokhu kufakwa kwe-PCB kufeza izinjongo eziningi, okuhlanganisa ukuthuthukisa ukuhanjiswa kwezindlela, ukuvikela izindawo zethusi eziveziwe ekungcolisweni nasekugqwaleni, kanye nokuhlinzeka ngendawo yokufaka izingxenye ze-elekthronikhi ebhodini. Inqubo yokufakwa kwe-PCB ivame ukwenziwa kusetshenziswa izindlela ezahlukahlukene ze-electrochemical, njenge-electroless plating noma i-electroplating, ukuze kufezwe ubukhulu obufiselekayo kanye nezakhiwo zesendlalelo esifakwe umoya.
Ukubaluleka Kokugoqa I-PCB
Ukufakwa kwe-PCB kubalulekile ngezizathu eziningana. Okokuqala, kuthuthukisa ukuhanjiswa kwezindlela zethusi, kuqinisekisa ukuthi izimpawu zikagesi zingageleza kahle phakathi kwezingxenye. Lokhu kubaluleke kakhulu ekusetshenzisweni kwemvamisa ephezulu kanye nesivinini esikhulu lapho ubuqotho besignali bubaluleke kakhulu. Ngaphezu kwalokho, ungqimba olufakwe i-plated lusebenza njengesithiyo ezicini zemvelo ezifana nomswakama kanye nokungcola, okungonakalisa ukusebenza kwe-PCB ngokuhamba kwesikhathi. Ngaphezu kwalokho, ukufakwa kwe-plated kunikeza indawo yokunamathisela, okuvumela izingxenye ze-elekthronikhi ukuthi zinamathele kahle ebhodini, kwakha ukuxhumana kukagesi okuthembekile.
Izinhlobo ze-PCB Plating
Kunezinhlobo eziningana zokufaka ama-plate ezisetshenziswa ekukhiqizweni kwe-PCB, ngayinye inezakhiwo zayo ezihlukile kanye nezinhlelo zokusebenza. Ezinye zezinhlobo ezivame kakhulu zokufaka ama-plate e-PCB zifaka:
1. Igolide Lokucwilisa Le-Nickel Elingenama-Electro (ENIG): I-ENIG plating isetshenziswa kabanzi ekukhiqizweni kwe-PCB ngenxa yokumelana kwayo nokugqwala okuhle kakhulu kanye nokunamathela kwayo. Yakhiwe ungqimba oluncane lwe-nickel engenama-electron olulandelwa ungqimba lwegolide lokucwilisa, oluhlinzeka ngobuso obuyisicaba nobubushelelezi bokucwilisa ngenkathi kuvikelwa ithusi elingaphansi ekungcolisweni.
2. Igolide Elifakwe Ngogesi: I-electroplated gold plated yaziwa ngokusebenza kwayo okumangalisayo kanye nokumelana nokungcoliswa, okwenza ifaneleke ukusetshenziswa lapho kudingeka khona ukuthembeka okuphezulu kanye nokuphila isikhathi eside. Ivame ukusetshenziswa kumadivayisi kagesi aphezulu kanye nezinhlelo zokusebenza zezindiza.
3. I-Tin Efakwe Ngogesi: I-Tin plating ivame ukusetshenziswa njengenketho engabizi kakhulu yama-PCB. Inikeza ukushintshwa okuhle kanye nokumelana nokugqwala, okwenza ifaneleke ukusetshenziswa kwezinhloso ezijwayelekile lapho izindleko ziyisici esibalulekile.
4. Isiliva Esifakwe Ngogesi: I-Silver plating inikeza ukuhanjiswa okuhle kakhulu futhi ivame ukusetshenziswa ezisetshenzisweni ezivame kakhulu lapho ubuqotho besiginali bubaluleke kakhulu. Kodwa-ke, ithambekele kakhulu ekungcoleni uma kuqhathaniswa ne-gold plating.
Inqubo Yokucwebezela
Inqubo yokufaka i-plating ngokuvamile iqala ngokulungiswa kwe-substrate ye-PCB, ehilela ukuhlanza nokusebenzisa ubuso ukuqinisekisa ukunamathela okufanele kwesendlalelo esifakwe i-plated. Endabeni yokufaka i-plating engena-electro, ibhavu yamakhemikhali equkethe insimbi yokufaka i-plating isetshenziselwa ukufaka ungqimba oluncane kwi-substrate ngokusebenzisa ukusabela kwe-catalytic. Ngakolunye uhlangothi, ukufaka i-electroplating kuhilela ukucwilisa i-PCB esixazululweni se-electrolyte nokudlulisa ugesi kuyo ukuze kufakwe insimbi phezu kwendawo.
Ngesikhathi senqubo yokufaka i-plating, kubalulekile ukulawula ukujiya kanye nokufana kwesendlalelo esifakwe i-plated ukuze kuhlangatshezwane nezidingo ezithile zomklamo we-PCB. Lokhu kufezwa ngokulawula okunembile kwamapharamitha okufaka i-plating, njengokwakheka kwesisombululo sokufaka i-plating, izinga lokushisa, ubuningi bamanje, kanye nesikhathi sokufaka i-plating. Izinyathelo zokulawula ikhwalithi, okuhlanganisa ukulinganisa ukujiya kanye nokuhlolwa kokunamathela, nazo zenziwa ukuqinisekisa ubuqotho besendlalelo esifakwe i-plated.
Izinselele kanye Nokucatshangelwa
Nakuba i-PCB plating inikeza izinzuzo eziningi, kunezinselele ezithile kanye nokucatshangelwa okuhlobene nenqubo. Inselele eyodwa evamile ukufeza ubukhulu obufanayo be-plating kuyo yonke i-PCB, ikakhulukazi emiklamo eyinkimbinkimbi enobukhulu obuhlukahlukene bezici. Ukucatshangelwa okufanele kokuklama, njengokusetshenziswa kwamaski e-plating kanye ne-impedance traces elawulwayo, kubalulekile ukuqinisekisa i-plating efanayo kanye nokusebenza kukagesi okuqhubekayo.
Ukucabangela imvelo nakho kudlala indima ebalulekile ekufakweni kwe-PCB, njengoba amakhemikhali kanye nemfucuza ekhiqizwa ngesikhathi senqubo yokufaka kungaba nemiphumela emvelweni. Ngenxa yalokho, abakhiqizi abaningi be-PCB basebenzisa izinqubo zokufaka izinto ezinobungani nemvelo ukuze banciphise umthelela emvelweni.
Ngaphezu kwalokho, ukukhethwa kwezinto zokufaka iplati kanye nobukhulu kumele kuhambisane nezidingo ezithile zohlelo lokusebenza lwe-PCB. Isibonelo, amasekethe edijithali asheshayo angadinga iplati ejiyile ukuze kuncishiswe ukulahleka kwesignali, kuyilapho amasekethe e-RF kanye nama-microwave angazuza ezintweni zokufaka iplati ezikhethekile ukuze kugcinwe ubuqotho besignali kumaza aphezulu.
Amathrendi Esikhathi Esizayo Ekubekweni Kwe-PCB
Njengoba ubuchwepheshe buqhubeka nokuthuthuka, insimu ye-PCB plating nayo iyashintsha ukuze ihlangabezane nezidingo zamadivayisi kagesi esizukulwane esilandelayo. Umkhuba owodwa ophawulekayo ukuthuthukiswa kwezinto zokufaka ezithuthukisiwe kanye nezinqubo ezinikeza ukusebenza okuthuthukisiwe, ukuthembeka, kanye nokusimama kwemvelo. Lokhu kuhlanganisa ukuhlola ezinye izinsimbi zokufaka kanye nokuqedwa kwendawo ukuze kuxazululwe ubunzima obukhulayo kanye nokunciphisa izingxenye ze-elekthronikhi.
Ngaphezu kwalokho, ukuhlanganiswa kwamasu okufaka amapulangwe athuthukile, njenge-pulse kanye ne-reverse pulse plating, kuyanda ukuze kufezwe ubukhulu besici obuhle kanye nezilinganiso eziphezulu zesici emiklamo ye-PCB. Lawa masu avumela ukulawula okunembile inqubo yokufaka amapulangwe, okuholela ekufaneni okuthuthukisiwe kanye nokuvumelana kuyo yonke i-PCB.
Ekuphetheni, ukugoba kwe-PCB kuyisici esibalulekile ekukhiqizweni kwe-PCB, okudlala indima ebalulekile ekuqinisekiseni ukusebenza, ukuthembeka, kanye nokusebenza kwamadivayisi kagesi. Inqubo yokugoba, kanye nokukhethwa kwezinto zokubopha kanye namasu, kuthinta ngqo izakhiwo zikagesi nezemishini ze-PCB. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, ukuthuthukiswa kwezixazululo zokubopha ezintsha kuzobaluleka ukuze kuhlangatshezwane nezidingo ezishintshayo zomkhakha we-elekthronikhi, okuqhuba inqubekela phambili eqhubekayo kanye nokusungula izinto ezintsha ekukhiqizweni kwe-PCB.
T: Ukufakwa kwe-PCB: Ukuqonda Inqubo Nokubaluleka Kwayo
D: Amabhodi Esifunda Aphrintiwe (ama-PCB) ayingxenye ebalulekile yamadivayisi kagesi esimanje, asebenza njengesisekelo sezingxenye ezenza la madivayisi asebenze. Ama-PCB aqukethe izinto ezingaphansi komhlaba, ngokuvamile ezenziwe nge-fiberglass, ezinezindlela zokuhambisa eziqoshwe noma eziphrintiwe ebusweni ukuze kuxhunywe izingxenye ezahlukene ze-elekthronikhi.
K: i-pcb plating
Isikhathi sokuthunyelwe: Agasti-01-2024
