- Ikirere gishyushye gishyizwe hejuru ya PCB yashongeshejwe amabati yagurishijwe hamwe nubushyuhe bwo guhumeka neza (guhuha). Kubikora bikora okiside irwanya okiside irashobora gutanga gusudira neza. Ugurisha ikirere gishyushye hamwe numuringa bigize uruganda rwumuringa-sikkim aho ruhurira, hamwe nubunini bwa 1m 2.
- Organic Solderability Preservative (OSP) mugukuza imiti ikoresheje umuringa usukuye umuringa wambaye ubusa. Iyi firime ya PCB igizwe nubushobozi ifite ubushobozi bwo kurwanya okiside, ubushyuhe, nubushuhe kugirango irinde umuringa kutangirika (okiside cyangwa sulfurizasi, nibindi) mubihe bisanzwe. Muri icyo gihe, ku bushyuhe bwo gusudira bwakurikiyeho, flux yo gusudira ikurwaho vuba.
3. Ni-au imiti yometseho umuringa hejuru yumubyimba, mwiza ni-au alloy yumuriro wamashanyarazi kugirango urinde ikibaho kinini cya PCB. Kumwanya muremure, bitandukanye na OSP, ikoreshwa gusa nkigice kitagira ingese, irashobora gukoreshwa mugukoresha igihe kirekire PCB no kubona imbaraga nziza. Byongeye kandi, ifite kwihanganira ibidukikije izindi nzira zo kuvura hejuru zidafite.
4. Ifumbire ya feza idafite amashanyarazi hagati ya OSP na nikel / isahani ya electroless, PCB igizwe nabantu benshi iroroshye kandi byihuse.
Guhura nibidukikije bishyushye, bitose kandi byanduye biracyatanga imikorere myiza yamashanyarazi no gusudira neza, ariko biranduye. Kuberako nta nikel iri munsi yifeza, ifeza yaguye ntabwo ifite imbaraga zose zumubiri zumubiri wa nikel plaque / kwibiza zahabu.
5.Umuyoboro uri hejuru yububiko bwa PCB igizwe na zahabu ya nikel, ubanza hamwe na nikel hanyuma ukayishyiraho zahabu. Intego nyamukuru yo gushiraho nikel ni ukurinda ikwirakwizwa rya zahabu n'umuringa. Hariho ubwoko bubiri bwa zahabu isize nikel: zahabu yoroshye (zahabu itunganijwe, bivuze ko idasa neza) na zahabu ikomeye (yoroshye, ikomeye, irwanya kwambara, cobalt nibindi bintu bisa neza). Zahabu yoroshye ikoreshwa cyane mugupakira chip kumurongo wa zahabu; Zahabu ikomeye ikoreshwa cyane cyane mumashanyarazi adahujwe.
6. Ubuhanga bwa PCB buvanze bwo kuvura hitamo uburyo bubiri cyangwa bwinshi bwo kuvura hejuru, inzira zisanzwe ni: nikel zahabu anti-okiside, nikel isahani ya zahabu imvura igwa nikel zahabu, nikel isahani ya zahabu ishyushye ikirere, nikel iremereye hamwe na zahabu ishyushye. Nubwo impinduka muri PCB yuburyo butandukanye bwo kuvura ntabwo ari ngombwa kandi bisa nkaho ari kure, twakagombye kumenya ko igihe kirekire cyo guhinduka gahoro bizatera impinduka nini. Hamwe nogukenera kurengera ibidukikije, tekinoroji yo gutunganya hejuru ya PCB igomba guhinduka cyane mugihe kizaza.