PCB (Printed Circuit Board) muhimmin sashi ne na na'urorin lantarki. Yana taka rawar haɗawa da tallafawa na'urorin lantarki kuma ana amfani dashi sosai a cikin na'urori da tsarin lantarki daban-daban.

Tsarin PCB yakan haɗa da ɓangarorin ƙasa, wayoyi, pads da ramuka masu hawa abubuwa. Substrate shine tushen PCB, wanda dole ne ya sami goyan bayan injiniyoyi masu kyau da ingantaccen aikin lantarki. Wayar ita ce hanyar haɗa kayan aikin lantarki, galibi ana yin ta da foil ɗin tagulla, wanda ake yin ta zuwa hadaddun hanyoyin tafiyar da aiki ta hanyar bugu, etching da sauran matakan tsari. Ana amfani da kushin don abubuwan walda, yawanci zagaye ko murabba'i, kuma ana samun haɗin haɗin ta hanyar walda tare da fil ɗin abubuwan. Ana amfani da ramuka masu hawa kayan aikin don shigar da kayan aikin lantarki daban-daban.