Cov kev tsis sib xws ntawm PCB feem ntau suav nrog cov cim taw qhia xws li board hom, board thickness, tooj liab thickness, thiab cov txheej txheem ntau lawm. Board thickness feem ntau qhia nyob rau hauv millimeters (mm), nrog rau cov specifications xws li 0.8mm, 1.0mm, thiab 1.6mm. Txawv thicknesses cuam tshuam lub zog txhua yam thiab mounting txoj kev ntawm PCB. Copper thickness txiav txim siab lub peev xwm nqa tam sim no thiab kev ua haujlwm kub dissipation ntawm circuitry; chav tsev feem ntau yog oz (ounce), piv txwv li, 1oz thiab 2oz tooj liab thicknesses sib txawv ntawm cov txheej tooj liab sib txawv. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg yog qhov tseem ceeb rau kev ntsuas qhov nyuaj ntawm PCB. Los ntawm ib qho - txheej thiab ob txheej - txheej boards mus rau 4-txheej, 6-txheej, los yog ntau dua cov txheej txheem ntau, cov qauv sib txawv cuam tshuam ncaj qha rau txoj kev muaj peev xwm, teeb tsa kev ncaj ncees, thiab kev ua haujlwm ntawm cov khoom.
PCBs tseem koom nrog cov kev ntsuas tseem ceeb xws li kev tiv thaiv tshav kub, kev ua haujlwm hluav taws xob, thiab kev ntseeg ib puag ncig. Lub iav hloov pauv kub (TG) yog ib qho tseem ceeb qhia ntawm PCB qhov siab -kub tsis kam; tus nqi TG siab dua qhia tau tias muaj kev ruaj ntseg zoo dua nyob rau hauv siab - qhov kub thiab txias. Dielectric tas li (Dk) thiab dielectric poob (Df) cuam tshuam qhov zoo ntawm siab - zaus teeb liab kis; yog li ntawd, siab - zaus PCBs feem ntau yuav tsum tau siv cov khoom siv tsawg - poob. Ntxiv rau cov kev cai no, PCBs kuj yuav tsum tau ua kom tau raws li qhov yuav tsum tau muaj rau kev ya raws, kev tiv thaiv corrosion, oxidation tsis kam, thiab EMC (electromagnetic compatibility) kom hloov mus rau ntau yam kev thov xws li kev tswj hwm kev lag luam, automotive electronics, khoom kho mob, thiab aerospace. Raws li cov khoom siv hluav taws xob txuas ntxiv txhim kho mus rau qhov nrawm dua, qhov me me, thiab kev ntseeg siab dua, PCB cov qauv kev ntsuas tsis tu ncua kuj tseem txhim kho.
