Mbiri Yachitukuko ya PCB Board

Mbiri Yachitukuko ya PCB Board

Kuyambira kubadwa kwaChithunzi cha PCB, yakhala ikukulirakulira kwa zaka 70.Mu ndondomeko yachitukuko zaka zoposa 70, PCB zasintha zina zofunika, amene amalimbikitsa chitukuko mofulumira PCB ndipo anaipanga mofulumira ntchito zosiyanasiyana.M'mbiri yonse yachitukuko ya PCB, ikhoza kugawidwa m'zigawo zisanu ndi chimodzi.

(1) Tsiku lobadwa la PCB.PCB idabadwa kuyambira 1936 mpaka kumapeto kwa 1940s.Mu 1903, Albert Hanson adagwiritsa ntchito koyamba liwu la "line" ndikuligwiritsa ntchito panjira yosinthira mafoni.Lingaliro lamalingaliro amtunduwu ndikudula zojambulazo zachitsulo zopyapyala kukhala zowongolera zozungulira, kenako kumamatira ku pepala la parafini, kenako ndikuyika pepala la parafini pa iwo, motero kupanga mawonekedwe a PCB amakono.Mu 1936, Dr. Paul Eisner anatulukira luso la kupanga la PCB.Nthawi imeneyi nthawi zambiri imatengedwa ngati nthawi yeniyeni yobadwa ya PCB.M'mbiri yakale iyi, njira zopangira PCB ndi njira zokutira, njira yopopera, njira yoyika vacuum, njira ya evaporation, njira yoyika mankhwala ndi njira yokutira.Panthawiyo, PCB inkagwiritsidwa ntchito polandila wailesi.

(2) Nthawi yoyeserera ya PCB.Nthawi yoyeserera ya PCB inali m'ma 1950s.Ndi chitukuko cha PCB, kuyambira 1953, makampani kulankhulana zipangizo kupanga anayamba kulabadira kwambiri PCB ndipo anayamba kugwiritsa ntchito PCB kwambiri.Munthawi yakale iyi, njira yopangira PCB ndiyo njira yochotsera.Njira yeniyeni ndiyo kugwiritsa ntchito mkuwa wonyezimira wopyapyala wopangidwa ndi phenolic resin laminate (PP material), ndiyeno gwiritsani ntchito mankhwala kuti asungunuke zojambulazo zamkuwa zosafunikira, kotero kuti zojambulazo zamkuwa zotsalira zimapanga dera.Panthawiyi, mankhwala omwe amagwiritsidwa ntchito pa PCB ndi ferric chloride.Choyimiracho ndi wailesi ya transistor yopangidwa ndi Sony, yomwe ndi PCB yokhala ndi gawo limodzi la PP.

(3) Moyo wothandiza wa PCB.PCB idagwiritsidwa ntchito m'ma 1960.Kuyambira 1960, makampani aku Japan adayamba kugwiritsa ntchito zida zoyambira za GE (nsalu yovala magalasi yamkuwa epoxy resin laminate) mochulukirapo.Mu 1964, kampani yaku America ya optical circuit inapanga njira yopangira ma electroless copper plating solution (cc-4 solution) ya mkuwa wolemera, motero idayambitsa njira yatsopano yopangira.Hitachi adayambitsa ukadaulo wa cc-4 kuti athetse zovuta za kutentha kwapang'onopang'ono ndikuchotsa mkuwa kwa magawo apakhomo a Ge poyambira.Ndi kuwongolera koyambirira kwaukadaulo wazinthu, mtundu wa zida zoyambira za Ge ukupitilirabe bwino.Kuyambira m'chaka cha 1965, opanga ena adayamba kupanga ma Ge substrates, Ge substrates zida zamagetsi zamafakitale ndi magawo a PP a zida zamagetsi ku Japan.