Iyini i-PCB Backdrilling? I-PCB backdrilling, eyaziwa nangokuthi i-controlled-depth drilling, ifaka ukususwa kwama-stubs kuma-PCB anezingqimba eziningi ukuze kudaleke izimbobo ezigqitshiwe. Inhloso ye-backdrilling ukusiza ukugeleza kwezimpawu phakathi kwezingqimba ezihlukene ze...