Kua haere tonu te whanaketanga o te hangarau PCB tae noa mai ki tēnei wā, ā, he maha ngā tukanga rapunga mata PCB kua hangaia. He taumata hau wera ngā tukanga noa iho, OSP, nickel nickting hiko,immersion Tin/Immersion Au
Taumata hau wera
Ko te taumata o te Rangi Wera, e mōhiotia ana hoki ko te taumata o te hau wera o HASL (kaihoko hau wera), he tukanga koti i te mata PCB me te kaihoko tīni whakarewa me te taumata ki te hau kōpeke wera, kia hangaia ai he apa koti e pare ana ki te kapa oxidation, ā, ka taea te whakarato i te weldability pai. Ko te nuinga o te wā, ko te hau wera e hokona ana, e kapa ana i te hononga o te whakatūnga o nga pūhui koura tīni kapa.
OSP(Whakahaeretanga Ā-Rōpū)
He rerekē te tukanga koti Organic OSP i ētahi atu tukanga rapunga mata. E mahi ana hei ārai i waenganui i te kapa me te hau hai ārai i te whakakotahitanga mata o te papa brazing. He ngāwari, he ngāwari hoki te koti organic, e tino whakamahia ai i roto i te umanga.
He pai te weldability o te koura nickel matū (ENIG) me te hiko hiko (ENIG). Ni hei apa taratahi me te koti weldable, e hiahiatia ana he mātotoru ≥3um; Ko Au te apa parenga o Ni, ā, he nui rawa te memeha o Au ki roto i te hononga kaihoko (ahakoa ka puta mai a Sn-Pb, Sn-Ag-Cu rānei) i te "whakahekenga tawhito". Nō reira, me whakatepe te mātotoru o te apa Au. He iti iho i te 1 te mātotoru o te apa Au e whakamahia ana mō te welding? m (ENIG: 0.05 ~ 0.3? m).
He ngāwari noa iho te waipuke o Tin PCB ki ngā mōwhiti tīni i muri i te tukanga ruma, ka kawea mai e ngā mōwhiti tīni me te hekenga tīni i roto i te tukanga welding ngā raruraru whaikiko. I muri i te tāpiritanga o ngā tāpiri waro ki roto i te rongoā leaching, he kōwae te hanganga apa tīni, e rongoā ana i te raruraru o mua, engari he pai hoki te taimautanga wera me te weldability
Ngā hē: Ko te ngoikoretanga nui rawa o te tīni ko tōna oranga poto, engari ina penapenatia ki te pāmahana tiketike me te hauhau, ka tipu tonu ngā pānga ā-iwi o Cu/Sn kia ngaro rā anō te hokohoko. Na reira, kaore e taea te penapena roa rawa te pereti tīni.
