PCB ibhodi etching inkqubo, esebenzisa iinkqubo zemveli etching imichiza ukuze corrode iindawo ezingakhuselekanga. Uhlobo olufana nokugrumba umsele, indlela esebenzayo kodwa engasebenziyo.
Kwinkqubo ye-etching, iphinda ihlulwe ibe yinkqubo yefilimu efanelekileyo kunye nenkqubo yefilimu engalunganga. Inkqubo yefilimu efanelekileyo isebenzisa i-tin esisigxina ukukhusela isiphaluka, kwaye inkqubo yefilimu engalunganga isebenzisa ifilimu eyomileyo okanye ifilimu emanzi ukukhusela isiphaluka. Imiphetho yemigca okanye iipads azimi kakuhle ngokwemvelietchingiindlela. Ngalo lonke ixesha umgca unyuswa ngo-0.0254mm, umphetho uya kuthambekela kwinqanaba elithile. Ukuqinisekisa isithuba esaneleyo, i-gap yocingo isoloko ilinganiswa kwindawo ekufutshane yocingo ngalunye olusetwe kwangaphambili.
Kuthatha ixesha elingakumbi ukumisa i-ounce yobhedu ukuze udale umsantsa omkhulu kwisithuba socingo. Oku kubizwa ngokuba yi-etch factor, kwaye ngaphandle kokuba umenzi abonelele ngoluhlu olucacileyo lwezithuba ezincinci kwi-ounce nganye yobhedu, funda i-etch factor yomenzi. Kubaluleke kakhulu ukubala umthamo omncinci nge-ounce yobhedu. I-etch factor ichaphazela umngxuma womsesane womenzi. Ubungakanani bomngxunya wendabuko yi-0.0762mm imaging + 0.0762mm yokugaya + 0.0762 stacking, iyonke 0.2286. I-Etch, okanye i-etch factor, yenye yamagama amane aphambili achaza ibakala lenkqubo.
Ukuze kuthintelwe umaleko okhuselayo ukuba ungawi kwaye ufezekise iimfuno zenkqubo yezithuba zekhemikhali, ukuthungwa kwendabuko kumisela ukuba isithuba esincinci phakathi kweengcingo akufanele sibe ngaphantsi kwe-0.127mm. Ukuqwalasela i-phenomenon ye-corrosion yangaphakathi kunye ne-undercut ngexesha lenkqubo ye-etching, ububanzi bocingo kufuneka bunyuswe. Eli xabiso lichongwa bubunzima boluhlu olufanayo. Ukuqina kobhedu, kuthatha ixesha elide ukubeka ubhedu phakathi kweengcingo kunye nangaphantsi kwengubo yokukhusela. Ngaphezulu, kukho idatha emibini ekufuneka ithathelwe ingqalelo kwi-chemical etching: i-etch factor - inani lobhedu olufakwe kwi-ounce; kunye nomsantsa omncinci okanye ububanzi bepitshi nganye yobhedu.