HDI PCB ikora muruganda rwikora PCB --- OSP irangije kurangiza
OSP isobanura Organic Solderability Preservative, nanone yitwa umuzunguruko wumuzunguruko utunganijwe ninganda zikora PCB, irazwi cyane ya Printed Circuit Board irangiza kubera igiciro gito kandi byoroshye-gukoresha mubikorwa bya PCB.
OSP ikoresha muburyo bwa chimique ifumbire mvaruganda kugirango igaragaze umuringa watoranijwe uhuza umuringa mbere yo kugurisha, ugakora icyuma kama kugirango urinde umuringa wagaragaye.Ubunini bwa OSP, ni buto, hagati ya 46µin (1.15µm) -52µin (1.3µm), bupimirwa muri A ° (angstrom).
Organic Surface Protectant iragaragara, biragoye kubigenzura.Mugurisha gukurikiraho, bizavaho vuba.Uburyo bwo kwibiza mumiti burashobora gukoreshwa gusa nyuma yizindi nzira zose zakozwe, harimo Ikizamini cyamashanyarazi nubugenzuzi.Gushyira hejuru ya OSP kurangiza kuri PCB mubisanzwe bikubiyemo uburyo bwa chimique ya convoyeur cyangwa ikigega gihagaritse.
Inzira muri rusange isa nkiyi, hamwe no kwoza hagati ya buri ntambwe:
1) Isuku.
2) Kongera imiterere ya topografiya: Ubuso bwumuringa bugaragara bukorerwa mikorobe kugirango yongere umubano hagati yubuyobozi na OSP.
3) Acide yoge mumuti wa sulfurike.
4) Porogaramu ya OSP: Kuri ubu mugikorwa, igisubizo cya OSP gikoreshwa kuri PCB.
5) Kwoza Deionisation: Igisubizo cya OSP cyinjizwamo ion kugirango kibashe kurandurwa byoroshye mugihe cyo kugurisha.
6) Kuma: Nyuma yo kurangiza OSP, PCB igomba gukama.
Ubuso bwa OSP ni kimwe mubirangizwa cyane.Nuburyo bwubukungu, butangiza ibidukikije kubikorwa byacapwe byumuzunguruko.Irashobora gutanga co-planar padi hejuru kubibanza byiza / BGA / gushyira ibice bito.Ubuso bwa OSP burashobora gusanwa cyane, kandi ntibisaba gufata neza ibikoresho.
Ariko, OSP ntabwo ikomeye nkuko byari byitezwe.Ifite ibibi byayo.OSP yunvikana neza kandi isaba gukemura cyane kugirango wirinde gushushanya.Mubisanzwe, kugurisha byinshi ntabwo bisabwa kuva kugurisha byinshi bishobora kwangiza firime.Ubuzima bwacyo bwo kubaho nubugufi muri byose birangiye.Ikibaho kigomba guterana vuba nyuma yo gushira.Mubyukuri, abatanga PCB barashobora kwongerera igihe cyigihe cyo kongera kurangiza.OSP iragoye cyane kugerageza cyangwa kugenzura kubera imiterere yayo iboneye.
Ibyiza:
1) Kutayobora
2) Ubuso bunini, bwiza kubipapuro byiza (BGA, QFP ...)
3) Gupfundikanya cyane
4) Irashobora gukoreshwa hamwe nibindi bisoza (urugero OSP + ENIG)
5) Igiciro gito
6) Gukora neza
7) Inzira yoroshye
Ibibi:
1) Ntabwo ari byiza kuri PTH
2) Gukemura ibibazo
3) Ubuzima Bugufi bwa Shelf (<amezi 6)
4) Ntibikwiriye gukoreshwa muburyo bwa tekinoroji
5) Ntabwo ari byiza kubisubiramo byinshi
6) Umuringa uzashyirwa ahagaragara mugiterane, bisaba ko hajyaho ibintu byinshi
7) Biragoye kugenzura, birashobora gutera ibibazo mugupima ICT
Gukoresha bisanzwe:
1) Ibikoresho byiza byikibuga: Uku kurangiza nibyiza gukoreshwa mubikoresho byiza byikibuga kubera kubura amakarito ya co-planar cyangwa ubuso butaringaniye.
2) Ikibaho cya seriveri: OSP ikoresha intera kuva murwego rwohejuru rwa porogaramu kugeza kumurongo mwinshi wa seriveri.Uku gutandukana kwinshi mubikoreshwa bituma bikwiranye na progaramu nyinshi.Irakoreshwa kandi muburyo bwo gutoranya kurangiza.
3) Ubuso bwa tekinoroji ya Surface (SMT): OSP ikora neza muguterana kwa SMT, kuko mugihe ukeneye guhuza ibice muburyo bwa PCB.
InyumaKuri Blog
Igihe cyo kohereza: Gashyantare-02-2023
