Ob sab boards yog luam tawm circuits ntawm ob sab ntawm ib tug insulating substrate nrog ib tug tuab ntawm 0 2-5 hli. Nws yog qhov tsim nyog rau cov khoom siv hluav taws xob nrog cov kev xav tau dav dav, xws li cov khoos phis tawj hluav taws xob, cov cuab yeej hluav taws xob thiab cov ntsuas. Txij li cov xov hluav taws xob ntawm ob sab ntawv luam tawm Circuit Court yog siab dua li ntawm ib qho kev luam tawm Circuit Court, qhov ntim ntawm cov khoom tuaj yeem raug txo.
