Sab pem hauv ntej thiab sab nraub qaum ntawm pcb Circuit Court yog cov txheej tooj liab. Hauv kev tsim khoom ntawm pcb circuits, txawm tias cov txheej tooj liab raug xaiv rau tus nqi sib txawv lossis ob tus lej ntxiv thiab rho tawm, qhov kawg tshwm sim yog qhov du thiab tsis muaj kev saib xyuas. Txawm hais tias lub cev lub cev ntawm tooj liab tsis zoo siab li txhuas, hlau, magnesium, thiab lwm yam, nyob rau hauv qhov chaw ntawm cov dej khov, cov tooj liab ntshiab thiab cov pa oxygen yog qhov cuam tshuam rau oxidation; xav txog lub hav zoov ntawm co2 thiab dej vapor nyob rau hauv cov huab cua, qhov chaw ntawm tag nrho cov tooj liab Tom qab kev sib cuag nrog cov roj, ib tug redox cov tshuaj tiv thaiv yuav tshwm sim sai sai. Xav tias qhov tuab ntawm cov txheej tooj liab hauv PCB Circuit Court yog nyias dhau, cov tooj liab tom qab cua oxidation yuav dhau los ua hluav taws xob tsis tu ncua, uas yuav ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob ntawm txhua qhov PCB circuits.

Txhawm rau kom tiv thaiv oxidation ntawm tooj liab zoo dua, thiab kom zoo dua qhov sib cais ntawm vuam thiab tsis vuam vuam qhov chaw ntawm lub pcb Circuit Court thaum lub sij hawm vuam hluav taws xob, thiab nyob rau hauv thiaj li yuav zoo dua tswj qhov chaw ntawm lub pcb Circuit Court, technical engineers tau tsim ib tug tshwj xeeb Architectural. Txheej txheej. Xws li architectural txheej tuaj yeem txhuam tau yooj yim rau ntawm qhov chaw ntawm PCB Circuit Court, ua rau lub thickness ntawm cov txheej tiv thaiv yuav tsum nyias nyias thiab thaiv kev sib cuag ntawm tooj liab thiab roj. Cov txheej no yog hu ua tooj liab, thiab cov khoom siv raw siv yog solder mask