Umlando Wokuthuthukiswa webhodi le-PCB

Umlando Wokuthuthukiswa webhodi le-PCB

Selokhu kwazalwaIbhodi le-PCB, isithuthuke iminyaka engaphezu kuka-70.Enqubweni yokuthuthukiswa kweminyaka engaphezu kwengu-70, i-PCB iye yabhekana nezinguquko ezibalulekile, ezikhuthaze ukuthuthukiswa okusheshayo kwe-PCB futhi kwenze ukuthi isetshenziswe ngokushesha emikhakheni ehlukahlukene.Kuwo wonke umlando wokuthuthukiswa kwe-PCB, ingahlukaniswa izinkathi eziyisithupha.

(1) Usuku lokuzalwa lwe-PCB.I-PCB yazalwa kusukela ngo-1936 kuya ekupheleni kwawo-1940.Ngo-1903, u-Albert Hanson waqala ukusebenzisa umqondo othi “umugqa” futhi wawusebenzisa ohlelweni lokushintshwa kocingo.Umqondo wokuklama walo mqondo uwukusika ucwecwe lwensimbi oluncane lube amakhondaktha esekethe, bese unamathisele ephepheni likapharafini, bese ekugcineni unamathisele ungqimba lwephepha likapharafini kuwo, ngaleyo ndlela kwakhiwe i-prototype yesakhiwo se-PCB yanamuhla.Ngo-1936, uDkt. Paul Eisner wasungula ubuchwepheshe bokukhiqiza be-PCB.Lesi sikhathi ngokuvamile sithathwa njengesikhathi sokuzalwa sangempela se-PCB.Kulesi sikhathi esingokomlando, izinqubo zokukhiqiza ezamukelwa i-PCB yindlela yokumboza, indlela yokufutha, indlela yokufaka i-vacuum, indlela yokuhwamuka, indlela yokubeka amakhemikhali nendlela yokumboza.Ngaleso sikhathi, i-PCB yayivame ukusetshenziswa kubamukeli bomsakazo.

(2) Isikhathi sokukhiqiza isivivinyo se-PCB.Isikhathi sokukhiqiza isivivinyo se-PCB sasingeminyaka yawo-1950.Ngokuthuthukiswa kwe-PCB, kusukela ngo-1953, imboni yokukhiqiza imishini yezokuxhumana yaqala ukunaka kakhulu i-PCB futhi yaqala ukusebenzisa i-PCB ngobuningi.Kulesi sikhathi somlando, inqubo yokukhiqiza ye-PCB iyindlela yokukhipha.Indlela eqondile iwukusebenzisa i-copper-clad thin paper-based phenolic resin laminate (impahla ye-PP), bese usebenzisa amakhemikhali ukuze ahlakaze i-foil yethusi engadingeki, ukuze i-foil yethusi esele yakha isifunda.Ngalesi sikhathi, ukwakheka kwamakhemikhali ekhambi elonakalisayo elisetshenziselwa i-PCB yi-ferric chloride.Umkhiqizo omele umsakazo ophathwayo we-transistor owenziwe ngabakwaSony, okuyi-PCB enesendlalelo esisodwa esine-PP substrate.

(3) Impilo ewusizo ye-PCB.I-PCB yasetshenziswa ngawo-1960.Kusukela ngo-1960, izinkampani zaseJapane zaqala ukusebenzisa izinto eziyisisekelo ze-GE (i-copper-clad glass cloth epoxy resin laminate) ngobuningi.Ngo-1964, inkampani yaseMelika ye-optical circuit yakha isisombululo se-electroless copper plating (cc-4 solution) sethusi elisindayo, ngaleyo ndlela yaqala inqubo yokukhiqiza entsha.I-Hitachi yethule ubuchwepheshe be-cc-4 ukuze ixazulule izinkinga zokushisisa i-warping deformation kanye nokuhlubula ithusi kwama-substrates e-Ge asekhaya esigabeni sokuqala.Ngokuthuthukiswa kokuqala kobuchwepheshe bezinto ezibonakalayo, ikhwalithi yezinto eziyisisekelo ze-Ge iyaqhubeka nokuba ngcono.Kusukela ngo-1965, abanye abakhiqizi baqala ukukhiqiza ngobuningi ama-Ge substrates, ama-Ge substrates emishini ye-electronic yezimboni kanye nama-PP substrates emishini kagesi yomphakathi e-Japan.