Lub PCB (Printed Circuit Board) feem ntau muaj cov txheej txheem, cov ntawv ci tooj liab, cov qauv hauv Circuit Court, thiab daim npog ntsej muag. Lub substrate yog cov qauv tsim ntawm PCB; Cov khoom siv feem ntau suav nrog FR-4 fiberglass board, aluminium substrate, thiab cov khoom siv PI hloov tau. Cov ntaub ntawv sib txawv cuam tshuam rau PCB qhov kub tsis kam, lub zog ua haujlwm, thiab hluav taws xob ua haujlwm. Copper foil yog lub luag hauj lwm rau tam sim no thiab teeb liab kis tau tus mob, tsim ntau yam conductors, hwj chim kab, thiab grounding tes hauj lwm los ntawm cov txheej txheem etching, thiab yog lub hauv paus rau interconnecting hluav taws xob Cheebtsam. Rau siab - zaus thiab siab - cov khoom lag luam ceev, cov kev xav tau siab dua yog muab tso rau ntawm tooj liab tuab, kab dav, thiab dielectric tas li kom ntseeg tau tias cov teeb liab ruaj khov thiab muaj peev xwm tiv thaiv kev cuam tshuam.
Lub ntsej muag lub ntsej muag thiab lub ntsej muag silkscreen ntawm PCB nto yog qhov tseem ceeb sib npaug. Lub npog ntsej muag feem ntau yog xim ntsuab, tab sis kuj tuaj yeem yog xim dub, dawb, liab, thiab lwm yam. Nws txoj haujlwm yog los tiv thaiv luv luv Circuit Court, oxidation, thiab ib puag ncig corrosion thaum soldering, thaum tseem txhim kho cov rwb thaiv tsev kev ua tau zoo ntawm lub rooj tsav xwm Circuit Court. Cov txheej silkscreen feem ntau yog siv los txheeb xyuas cov naj npawb, polarity, qhov chaw sib txuas, thiab cov ntaub ntawv tsim khoom, ua kom yooj yim tom qab sib dhos, kuaj, thiab kho. Ntxiv nrog rau kev kho saum npoo, PCBs tau txais kev kho saum npoo xws li tin plating, immersion kub plating, thiab OSP (Optical Separation Process) los txhim kho kev ntseeg siab thiab oxidation tsis kam. Cov txheej txheem sib txawv ncaj qha cuam tshuam cov khoom lag luam lifespan thiab cov nqi tsim khoom.
Nyob rau hauv cov qauv sab hauv ntawm PCBs, multilayer board tsim kuj yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob niaj hnub. Raws li cov khoom siv hluav taws xob txuas ntxiv mus txuas ntxiv mus rau qhov me me thiab kev ua haujlwm siab, ib qho - txheej boards tsis txaus los ua kom tau raws li qhov xav tau ntawm cov txheej txheem nyuaj. Yog li ntawd, ntau yam khoom siv 4- txheej, 6- txheej, lossis txawm tias txheej txheej PCB ntau dua. Multilayer PCBs, los ntawm kev sib xyaw ua ke ntawm lub zog sab hauv, hauv av, thiab cov teeb liab txheej, tsis yog tsuas yog ua kom cov kab nrib pleb, tab sis kuj txo cov electromagnetic cuam tshuam, txhim kho teeb liab kev ncaj ncees thiab kev ruaj ntseg. Tshwj xeeb hauv kev lag luam xws li cov khoom siv sib txuas lus, kev tswj hwm kev lag luam, tsheb hluav taws xob, thiab cov servers, cov txheej txheem PCBs tau dhau los ua lub hauv paus tseem ceeb rau kev txhim kho cov khoom lag luam thiab kev ntseeg tau.
