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Plated Ta Ramuka Tsarin PTH a cikin masana'antar PCB --- Electroless Chemical Copper Plating

Kusan dukaPCBs tare da yadudduka biyu ko multi-layers suna amfani da plated ta cikin ramuka (PTH) don haɗa masu gudanarwa tsakanin yadudduka na ciki ko waje, ko don riƙe abubuwan haɗin gwiwar wayoyi masu guba.Don cimma wannan, ana buƙatar hanyoyin haɗin kai masu kyau don halin yanzu yana gudana ta cikin ramukan.Duk da haka, kafin plating tsari, ta ramukan ne ba conductive saboda buga kewaye allon suna hada da wadanda ba conductive composite substrate abu (epoxy-gilashi, phenolic-takarda, polyester-gilashi, da dai sauransu).Don samar da dacewa ko da yake ramukan, kusan microns 25 (mil 1 ko 0.001 in.) na jan karfe ko fiye da ƙayyadaddun ƙirar allon kewayawa ana buƙatar ajiya ta hanyar lantarki akan bangon ramukan don ƙirƙirar haɗin kai.

Kafin platin jan karfe na electrolytical, mataki na farko shine sinadari na jan karfe, wanda kuma ake kira electroless deposition na jan karfe, don samun madaurin farko akan bangon ramukan bugu na allunan wayoyi.Halin rage yawan iskar shakawar iskar shaka ta atomatik yana faruwa a saman abubuwan da ba sa gudanarwa ta ramuka.A jikin bangon wani siririn gashi na jan karfe kusan 1-3 micrometer an ajiye shi ta hanyar sinadarai.Manufarsa ita ce ta sanya saman ramin ya zama mai ɗorewa don ba da izinin ƙara haɓakawa tare da jan ƙarfe da aka ajiye ta hanyar lantarki zuwa kauri da mai ƙirar allon waya ya ayyana.Bayan jan karfe, za mu iya amfani da palladium, graphite, polymer, da dai sauransu a matsayin madugu.Amma jan ƙarfe shine mafi kyawun zaɓi ga mai haɓakawa na lantarki akan al'ada.

Kamar yadda IPC-2221A tebur 4.2 ya ce mafi ƙarancin kauri na jan karfe da ake amfani da shi ta hanyar sanya tagulla mara amfani da tagulla akan bangon PTH don matsakaitawar jan ƙarfe shine 0.79 mil na aji Ⅰ da Class Ⅱ da 0.98 mil donajiⅢ.

Layin ajiyar tagulla na sinadari yana da cikakken sarrafa kwamfuta kuma ana ɗaukar fale-falen ta hanyar jerin sinadarai da wankin wanka ta crane na sama.Da farko, an riga an riga an yi maganin pcb panels, cire duk abin da ya rage daga hakowa da kuma samar da kyakkyawan roughness da electro tabbatacce ga sinadari na jan karfe.Mataki mai mahimmanci shine aiwatar da desmear permanganate na ramuka.A lokacin aikin jiyya, an cire wani bakin ciki na resin epoxy daga gefen Layer na ciki da ganuwar ramukan, don tabbatar da mannewa.Sannan duk bangon ramuka ana nutsewa a cikin baho mai aiki don samun iri tare da ƙananan barbashi na palladium a cikin wanka mai aiki.Ana kiyaye wanka a ƙarƙashin motsin iska na al'ada kuma kullun suna motsawa ta cikin wanka don cire yuwuwar kumfa mai yuwuwa a cikin ramuka.Wani siriri mai bakin karfe na jan karfe da aka ajiye akan gaba dayan saman panel kuma ya huda ramuka bayan wankan palladium.Plating mara amfani da wutar lantarki tare da amfani da palladium yana samar da mafi ƙarfi na murfin jan karfe zuwa fiberglass.A ƙarshe ana gudanar da bincike don bincika porosity da kauri da rigar tagulla.

Kowane mataki yana da mahimmanci ga tsarin gaba ɗaya.Duk wani kuskure a cikin hanya na iya haifar da ɓarnatar da duka rukunin allon PCB.Kuma ingancin ƙarshe na pcb yana da mahimmanci a cikin waɗannan matakan da aka ambata anan.

Yanzu, tare da ramukan ɗawainiya, haɗin lantarki tsakanin yadudduka na ciki da waje waɗanda aka kafa don allon kewayawa.Mataki na gaba shine girma jan ƙarfe a cikin waɗannan ramukan da saman da kasa yadudduka na igiyoyin waya zuwa takamaiman kauri - jan ƙarfe electroplating.

Cikakkun layukan plating na jan karfe mara amfani da sinadari mai sarrafa kansa a cikin PCB ShinTech tare da Fasahar Yanke Gefen PTH.

 

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Don cimma kyawawan hanyoyin da aka haɗa ana buƙatar don halin yanzu don gudana ta cikin ramuka don gina Plated ko da yake ramukan PTH don PCB bugu allon da'ira PCBshinTech PCB Manufacturer
Cikakkun layukan plating na jan karfe mara amfani da sinadari mai sarrafa kansa a cikin PCB ShinTech tare da Fasahar Yanke Gefen PTH

Lokacin aikawa: Jul-18-2022

Tattaunawa kai tsayeKwararre akan layiYi Tambaya

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