Cov txheej txheem luam tawm Circuit Board (PCB) kev sib dhos pib nrog qhov tseem ceeb tshaj plaws ntawm PCB: lub substrate. Lub substrate muaj plaub txheej ntawm cov khoom sib txawv, txhua tus ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm kawg ntawm lub rooj tsav xwm luam tawm.
Substrate: Qhov no yog cov khoom siv hauv paus ntawm PCB, muab lub rooj tsavxwm nrog nws cov txheej txheem rigidity.
Copper: Ib txheej nyias ntawm cov ntawv ci tooj liab yog siv rau txhua qhov chaw ua haujlwm ntawm PCB. Rau ib qho -sab PCBs, cov ntawv ci tooj liab muaj nyob rau ntawm ib sab; rau ob -sab PCBs, nws raug faib thoob plaws ob sab. Cov khaubncaws sab nraud povtseg sib sau ua cov kab tooj liab.
Solder Mask: Nyob rau saum txheej tooj liab yog lub npog ntsej muag, uas muab txhua tus PCB nws kos npe ntsuab tsos. Lub luag haujlwm tseem ceeb ntawm lub npog ntsej muag yog txhawm rau tiv thaiv cov kab tooj liab los ntawm cov khoom siv hluav taws xob, yog li tiv thaiv kev luv luv. Hauv lwm lo lus, lub npog ntsej muag ua haujlwm raws li qhov nruab nrab uas ruaj ntseg tag nrho cov khoom hauv lawv txoj haujlwm raug xaiv los ntawm cov khoom siv. Cov qhov qhib nyob rau hauv lub qhov ncauj qhov ntswg tso cai rau solder hla thiab txuas cov khoom rau lub rooj tsavxwm; qhov no yog ib theem tseem ceeb hauv cov txheej txheem PCB los ua ke, vim nws tiv thaiv kev tsis xav tau soldering ntawm qhov chaw tsis tsim nyog, ua tau zoo tiv thaiv luv luv - cov teeb meem cuam tshuam.
Silkscreen: Dawb silkscreen txheej yog txheej kawg siv rau PCB. Cov txheej no ntxiv cov cim - nyob rau hauv daim ntawv ntawm cov cim thiab cov cim - rau lub rooj tsavxwm, ua haujlwm los txheeb xyuas qhov kev ua haujlwm ntawm txhua tus neeg feem ntawm PCB.
