Tumaze gushushanyaUbuyobozi bwa PCB, dukeneye guhitamo inzira yo kuvura hejuru yubuyobozi bwumuzunguruko.Uburyo bukoreshwa muburyo bwo kuvura hejuru yubuyobozi bwumuzunguruko ni HASL (inzira yo gutera amabati yo hejuru), ENIG (inzira ya immersion ya zahabu), OSP (anti-okiside), hamwe nubuso bukunze gukoreshwa Nigute twahitamo uburyo bwo kuvura?Inzira zitandukanye zo kuvura PCB zifite uburyo butandukanye, kandi ibisubizo byanyuma nabyo biratandukanye.Urashobora guhitamo ukurikije uko ibintu bimeze.Reka nkubwire ibyiza nibibi byuburyo butatu bwo kuvura hejuru: HASL, ENIG, na OSP.
1. HASL (Uburyo bwo gutera amabati yo hejuru)
Amabati yo gutera amabati agabanijwemo isasu rya spray tin hamwe na tin spray idafite.Amabati yo gutera amabati niyo nzira yingenzi yo kuvura hejuru yubutaka mu myaka ya za 1980.Ariko ubu, ibibaho bike kandi bike byumuzunguruko uhitamo tin spray inzira.Impamvu nuko ikibaho cyumuzunguruko mu cyerekezo "gito ariko cyiza".Inzira ya HASL izaganisha kumipira mibi yo kugurisha, umupira wumupira wamabati yatewe mugihe cyo gusudira nezaSerivisi za PCBigihingwa kugirango ushake ibipimo bihanitse hamwe nikoranabuhanga kugirango ubyare umusaruro, ENIG na SOP uburyo bwo kuvura hejuru burahitamo.
Ibyiza bya tin-spray yatewe : igiciro gito, imikorere myiza yo gusudira, imbaraga zumukanishi hamwe nuburabyo kuruta amabati yatewe.
Ibibi byamabati yatewe: amabati yatewe isasu arimo amabuye aremereye, atangiza ibidukikije mu musaruro kandi ntashobora gutsinda isuzuma ry’ibidukikije nka ROHS.
Ibyiza byo kuyobora amabati: igiciro gito, imikorere myiza yo gusudira, kandi ugereranije nibidukikije, irashobora gutsinda ROHS nibindi bisuzuma byo kurengera ibidukikije.
Ibibi byo kuyobora tin spray: imbaraga za mashini hamwe nuburabyo ntabwo aribyiza nkibiyobora amabati.
Ingaruka rusange ya HASL: Kuberako ubuso buringaniye bwamabati yatewe amabati ari mabi, ntibikwiye kugurishwa pin ifite icyuho cyiza nibice bito cyane.Amabati y'amabati yabyara byoroshye mugutunganya PCBA, birashoboka cyane ko bitera imiyoboro migufi kubice bifite icyuho cyiza.
2. ENIG（Inzira yo kurohama zahabu)
Inzira yo kurohama zahabu ninzira yambere yo kuvura hejuru, ikoreshwa cyane cyane kubibaho byumuzunguruko hamwe nibisabwa byo guhuza hamwe nigihe kirekire cyo kubika hejuru.
Ibyiza bya ENIG: Ntibyoroshye okiside, irashobora kubikwa igihe kirekire, kandi ifite ubuso bunini.Irakwiriye kugurisha pin-icyuho cyiza hamwe nibice hamwe nuduce duto two kugurisha.Kugarura birashobora gusubirwamo inshuro nyinshi utagabanije kugurishwa.Irashobora gukoreshwa nka substrate yo guhuza insinga za COB.
Ibibi bya ENIG: Igiciro kinini, imbaraga zo gusudira nabi.Kuberako amashanyarazi ya nikel yamashanyarazi akoreshwa, biroroshye kugira ikibazo cya disiki yumukara.Nikel layer oxyde mugihe, kandi kwizerwa kuramba nikibazo.
3. OSP (inzira yo kurwanya okiside)
OSP ni firime ngenga ikozwe muburyo bwa chimique hejuru yumuringa wambaye ubusa.Iyi firime ifite anti-okiside, ubushyuhe nubushuhe, kandi ikoreshwa mukurinda ubuso bwumuringa kutangirika (okiside cyangwa volcanisation, nibindi) mubidukikije bisanzwe, bihwanye no kuvura anti-okiside.Nyamara, mugihe cyo kugurisha ubushyuhe bwo hejuru, firime ikingira igomba gukurwaho byoroshye na flux, kandi hejuru yumuringa usukuye urashobora guhita uhujwe nuwagurishije ushongeshejwe kugirango ugire uruganda rukomeye mugihe gito cyane.Kugeza ubu, igipimo cyibibaho byumuzunguruko ukoresheje uburyo bwo kuvura hejuru ya OSP byiyongereye ku buryo bugaragara, kubera ko iyi nzira ibereye ku mbaho z’umuzunguruko w’ikoranabuhanga rito hamwe n’ibibaho by’ikoranabuhanga rikomeye.Niba nta sano ihuza imikorere isabwa cyangwa igihe cyo kubika ntarengwa, inzira ya OSP niyo nzira nziza yo kuvura.
Ibyiza bya OSP:Ifite ibyiza byose byo gusudira umuringa wambaye ubusa.Ikibaho cyarangiye (amezi atatu) nacyo gishobora gusubukurwa, ariko mubisanzwe kigarukira kumwanya umwe.
Ibibi bya OSP:OSP irashobora kwibasirwa na aside hamwe nubushuhe.Iyo ikoreshejwe kugurisha kabiri, igomba kurangira mugihe runaka.Mubisanzwe, ingaruka zo kugurisha kwa kabiri zizaba mbi.Niba igihe cyo kubika kirenze amezi atatu, kigomba gusubukurwa.Koresha mumasaha 24 nyuma yo gufungura paki.OSP ni urwego rukingira, bityo ikizamini kigomba gucapishwa hamwe na paste yagurishijwe kugirango ukureho umwimerere wa OSP kugirango uhuze pin point yo gupima amashanyarazi.Igikorwa cyo guterana gisaba impinduka nini, kugenzura hejuru yumuringa mbisi byangiza ICT, ubushakashatsi burenze urugero bwa ICT burashobora kwangiza PCB, bisaba ubwitonzi bwintoki, kugabanya ibizamini bya ICT no kugabanya ibizamini bisubirwamo.
Ibyavuzwe haruguru ni isesengura ryibikorwa byo gutunganya hejuru ya HASL, ENIG na OSP.Urashobora guhitamo uburyo bwo kuvura hejuru kugirango ukoreshe ukurikije imikoreshereze nyayo yibibaho.
Niba ufite ikibazo, nyamuneka surawww.PCBFuture.comkumenya byinshi.
Igihe cyo kohereza: Mutarama-31-2022