Tsara da Taro na PCB Mai Girma: Maɓalli Maɓalli

Allolin da'ira bugu mai girma-girma(PCBs) abubuwa ne masu mahimmanci a cikin kewayon aikace-aikace, gami da sadarwa, tsarin radar, sadarwa mara waya, da sarrafa bayanai masu sauri. Ayyukan waɗannan PCBs suna da tasiri sosai daga kayan da aka zaɓa don ƙira da haɗuwa. Wannan labarin yana bincika abubuwan farko da aka yi amfani da su a ciki ƙira da taro mai girma na PCB, yana jaddada halayensu da fa'idojinsu.

• Kayayyakin Gindi: Kayan tushe yana samar da tushe na PCB mai girma kuma yana taka muhimmiyar rawa wajen ƙayyade kayan lantarki. Wasu daga cikin manyan kayan tushe da ake amfani da su a cikin manyan PCBs sun haɗa da:
• FR-4: An tattali da kuma amfani da ko'ina epoxy guduro fiberglass composite, FR-4 samar da mai kyau inji da kumathermal kwanciyar hankali.Duk da haka, tadielectric akai-akai(Dk) dadissipation factor(Df) bazai zama mafi kyau ga aikace-aikacen mitoci masu girma ba.
• Rogers Materials: Rogers ya shahara saboda manyan kayan aikin dielectric, irin su RT/Droid. Waɗannan kayan sun ƙunshi fitattun ƙimar dielectric akai-akai (Dk) da ƙimar lalacewa (Df), yana sa su dace da aikace-aikacen PCB masu girma.
• Taconic Materials: Taconic yana ba da nau'ikan kayan aikin dielectric iri-iri, irin su PEEK (Polyether Ether Ketone) da polyimide, yana ba da ingantaccen kwanciyar hankali na thermal da ƙananan ƙimar Df, yana sa su dace da madaidaicin madauri.

• Kayayyakin Gudanarwa: Zaɓin kayan sarrafawa yana da mahimmanci a ƙirar PCB mai tsayi yayin da suke ƙayyade ƙayyadaddun da'ira, juriya, da amincin sigina. Wasu abubuwan da aka saba amfani da su a cikin PCBs masu yawa sun haɗa da:
• Copper: Copper shi ne mafi yadu amfani conductive abu saboda ta kwarai conductivity datsada-tasiri. Koyaya, juriyarsa yana ƙaruwa da mita, don haka ana iya amfani da siraran tagulla a aikace-aikace masu girma.
• Zinariya: An san zinari don ƙwaƙƙwaran ƙarfin aiki da ƙarancin juriya, yana sa ya dace da PCBs masu girma. Hakanan yana bayar da kyaujuriya na lalatada karko. Koyaya, zinari ya fi jan ƙarfe tsada, yana iyakance amfani da shi a ciki aikace-aikace masu tsada.
• Aluminum: Aluminum zaɓi ne na gama gari don PCB masu girma amma ana iya aiki dashi a takamaiman aikace-aikace inda nauyi da farashi ke damun farko. Ƙarfinsa yana ƙasa da jan ƙarfe da zinariya, wanda zai iya buƙatar ƙarin la'akari a cikin ƙira.
• Dielectric MaterialsKayayyakin dielectric suna da mahimmanci don ƙulla abubuwan da ke gudana akan PCB kuma suna da mahimmanci wajen tantance kaddarorin lantarki na PCB. Wasu daga cikin manyan kayan dielectric da ake amfani da su a cikin PCB masu girma sun haɗa da:
• Iska: Iska ita ce mafi yawan kayan aikin lantarki kuma yana ba da kyakkyawan aikin lantarki a manyan mitoci. Koyaya, kwanciyar hankali ta thermal yana iyakance, kuma maiyuwa bazai dace da aikace-aikacen zafin jiki ba.
• Polyimide: Polyimide shine ahigh-yi dielectric abusananne don ingantaccen yanayin yanayin zafi da ƙarancin ƙimar Df. Ana amfani dashi akai-akai a cikin manyan PCBs masu girma waɗanda ke buƙatar jure yanayin zafi.
• Epoxy: Abubuwan dielectric na tushen Epoxy suna ba da ingantaccen inji da kwanciyar hankali na thermal. Ana yawan aiki da su a cikin kayan tushe na FR-4 kuma suna ba da kyakkyawan aikin lantarki har zuwa takamaiman mitar.

Zaɓin kayan don ƙirar PCB mai tsayi da haɗuwa yana da mahimmanci don cimma kyakkyawan aiki. Kayan tushe, kayan aiki, da kayan wutan lantarki duk suna taka muhimmiyar rawa wajen tantance kaddarorin lantarki na PCB, amincin sigina, da amincin. Dole ne masu ƙira su zaɓi waɗannan kayan da kyau bisa ƙayyadaddun buƙatun aikace-aikacen don tabbatar da ingantaccen aiki da aiki. Yayin da fasaha ke ci gaba da haɓaka, sabbin kayayyaki da haɓakawa a cikin kayan da ake da su za su ci gaba da fitowa, suna ƙara haɓaka ƙarfin PCBs masu tsayi.