Ikibaho cyumuzunguruko wa PCB nacyo ni ugushyushya, uze kwiga!

Gukwirakwiza ubushyuhe bwibibaho byumuzunguruko wa PCB ni ihuriro ryingenzi cyane, none ni ubuhe buhanga bwo gukwirakwiza ubushyuhe bwumuzunguruko wa PCB, reka tubiganire hamwe.

Ikibaho cya PCB gikoreshwa cyane mugukwirakwiza ubushyuhe binyuze mu kibaho cya PCB ubwacyo ni umuringa utwikiriye umuringa / epoxy ikirahure cy'ibirahure cyangwa insimburangingo y'ibirahure bya fenolike, kandi hari umubare muto w'impapuro zishingiye ku muringa zikoreshwa. Nubwo iyi substrate ifite ibikoresho byiza byamashanyarazi nibitunganywa, bifite ubushyuhe buke, kandi nkinzira yo gukwirakwiza ubushyuhe kubice bishyushya cyane, ntibishobora kuba byitezwe ko bitwara ubushyuhe na PCB ubwayo, ariko bikwirakwiza ubushyuhe hejuru yubuso. ibigize ikirere gikikije. Nyamara, nkuko ibicuruzwa bya elegitoronike byinjiye mugihe cyibice bya miniaturizasiya, kwishyiriraho ubucucike bwinshi, no guteranya ubushyuhe bwinshi, ntibihagije kwishingikiriza gusa hejuru yubuso buto cyane kugirango ubushyuhe bugabanuke. Muri icyo gihe, kubera gukoresha cyane ibice byashizwe hejuru nka QFP na BGA, ubushyuhe butangwa nibice byanduzwa ku kibaho cya PCB ku bwinshi, kubwibyo rero, inzira nziza yo gukemura ubushyuhe ni ugutezimbere ubushobozi bwo gukwirakwiza ubushyuhe bwa PCB ubwayo muburyo butaziguye nibintu bishyushya, byoherezwa cyangwa bigakwirakwizwa mubuyobozi bwa PCB.

Imiterere ya PCB

a, igikoresho cyumva ubushyuhe gishyirwa ahantu hakonje.

b, igikoresho cyo kumenya ubushyuhe gishyirwa ahantu hashyushye.

c. . umugezi.

d, mu cyerekezo gitambitse, ibikoresho-byimbaraga nyinshi byateguwe hafi bishoboka kugeza kuruhande rwibibaho byacapwe kugirango bigabanye inzira yo kohereza ubushyuhe; Mu cyerekezo gihagaritse, ibikoresho-byimbaraga nyinshi bitunganijwe hafi bishoboka ku kibaho cyacapwe, kugirango bigabanye ingaruka zibi bikoresho ku bushyuhe bwibindi bikoresho iyo bikora.

e, gukwirakwiza ubushyuhe bwibibaho byacapwe mubikoresho ahanini biterwa no gutembera kwumwuka, bityo inzira yo gutembera kwumwuka igomba kwigwa mugushushanya, kandi igikoresho cyangwa ikibaho cyumuzingo cyacapwe kigomba gushyirwaho muburyo bukwiye. Iyo umwuka utemba, burigihe bikunda gutemba aho kurwanya biri hasi, mugihe rero ugenekereje igikoresho kumubaho wacapwe, birakenewe kwirinda gusiga ikirere kinini mukarere runaka. Iboneza ryibicapo byinshi byacapwe mumashini yose bigomba no kwitondera ikibazo kimwe.

f, ibikoresho byinshi byumva ubushyuhe bishyirwa neza mubushuhe buke (nko munsi yigikoresho), ntugashyire hejuru yubushyuhe, ibikoresho byinshi nibyiza bitondekanye neza muburyo butambitse.

g, tegura igikoresho gifite ingufu nyinshi hamwe nogukwirakwiza ubushyuhe hafi yikibanza cyiza cyo gukwirakwiza ubushyuhe. Ntugashyire ibikoresho bifite ubushyuhe bwinshi mu mfuruka no ku mpande z'ikibaho cyacapwe, keretse niba igikoresho gikonjesha cyateguwe hafi yacyo. Mugihe utegura imbaraga zo guhangana nimbaraga, hitamo igikoresho kinini gishoboka, hanyuma uhindure imiterere yikibaho cyacapwe kugirango kibe gifite umwanya uhagije wo gukwirakwiza ubushyuhe.