Izinhlangothi zangaphambili nangemuva zesekethe ye-pcb ngokuyisisekelo ziyizingqimba zethusi. Ekwenziweni kwamasekethe e-pcb, kungakhathaliseki ukuthi ungqimba lwethusi lukhethelwe isilinganiso sezindleko eziguquguqukayo noma ukungezwa okunamadijithi amabili kanye nokususa, umphumela wokugcina uwubushelelezi nobungenakulungiswa. Nakuba izakhiwo zethusi zingajabuli njenge-aluminium, insimbi, i-magnesium, njll., ngaphansi kwesisekelo seqhwa, ithusi elihlanzekile kanye ne-oksijini kuthinteka kakhulu ku-oxidation; ucabangela ukuba khona kwe-co2 kanye nomhwamuko wamanzi emoyeni, ubuso bayo yonke ithusi Ngemva kokuxhumana negesi, ukusabela kwe-redox kuzokwenzeka ngokushesha. Uma kucatshangelwa ukuthi ukushuba kongqimba lwethusi kusekethe ye-PCB mncane kakhulu, ithusi ngemva kwe-oxidation yomoya izoba yisimo sikagesi esingaguquki, esizolimaza kakhulu izici zemishini kagesi yazo zonke izifunda ze-PCB.

Ukuze kuvinjwe kangcono i-oxidation yethusi, futhi ukuhlukanisa kangcono izingxenye zokushisela nezingezona zokushisela zesekethe ye-pcb ngesikhathi sokushisela ugesi, futhi ukuze kugcinwe kangcono ubuso besifunda se-pcb, onjiniyela bezobuchwepheshe baye badala i-Architectural eyingqayizivele. Izigqoko. Izembatho ezinjalo zezakhiwo zingabhulashwa kalula ebusweni besifunda se-PCB, okuholela ekugqimeni kwesendlalelo sokuzivikela okufanele sibe mncane futhi sivimbele ukuthintana kwethusi negesi. Lolu ngqimba lubizwa ngethusi, kanti impahla eluhlaza esetshenziswayo i-solder mask