Gukora HDI PCB --- Immersion Zahabu ivura hejuru
ENIG bivuga Zahabu ya Electroless Nickel / Immersion Zahabu, nanone yitwa chimique Ni / Au, imikoreshereze yayo imaze kumenyekana ubu kubera kubazwa amabwiriza adafite amasasu kandi bikwiranye nuburyo bugezweho bwa PCB bwerekana HDI nibibuga byiza hagati ya BGAs na SMTs .
ENIG ni uburyo bwa Shimi bushyira umuringa wagaragaye hamwe na Nickel na Zahabu, bityo rero igizwe nigice cya kabiri cyo gutwikira ibyuma, 0.05-0.125 µm (santimetero 2-5μ) za kwibiza Zahabu (Au) hejuru ya 3-6 µm (120- 240μ inches) za Nickel (Ni) idafite amashanyarazi nkuko biteganijwe mubisanzwe.Muri icyo gihe, Nickel ashyirwa hejuru yumuringa wa palladium-catalizike, hanyuma agakurikirwa na zahabu ihambiriye ahantu hashyizweho nikel hakoreshejwe guhanahana molekile.Ipitingi ya nikel irinda umuringa okiside kandi ikora nkubuso bwo guterana kwa PCB, nayo ikaba inzitizi yo kubuza umuringa na zahabu kwimukira hamwe, kandi Au yoroheje cyane irinda nikel kugeza igihe cyo kugurisha kandi igatanga bike kuvugana no guhangana no guhanagura neza.Ubu bunini buguma buhoraho murwego rwacapwe.Gukomatanya byongera cyane kurwanya ruswa no gutanga ubuso bwiza bwo gushyira SMT.
Inzira ikubiyemo intambwe zikurikira:
1) Isuku.
2) Micro-etching.
3) Mbere yo kwibiza.
4) Gushyira mubikorwa.
5) Nyuma yo kwibiza.
6) Gukoresha nikel idafite amashanyarazi.
7) Gukoresha zahabu yo kwibiza.
Zahabu yo kwibiza ikoreshwa mubisanzwe nyuma yo kugurisha mask yo kugurisha, ariko mubihe bike, ikoreshwa mbere yuburyo bwo kugurisha.Ikigaragara ni uko ibi bizamura igiciro niba umuringa wose ushyizwemo zahabu ntabwo ari ibigaragara nyuma yo kugurisha mask.
Igishushanyo cyavuzwe haruguru cyerekana itandukaniro riri hagati ya ENIG nubundi buso bwa zahabu burangiye.
Muburyo bwa tekiniki, ENIG nigisubizo cyiza kidafite PCBs kuva PCBs yiganjemo ibishushanyo mbonera hamwe nuburinganire, cyane cyane kuri HDI PCB hamwe na VFP, SMD na BGA.ENIG ikundwa mubihe aho kwihanganira gukenewe bisabwa kubintu bya PCB nkibyobo bisobekeranye hamwe nikoranabuhanga rikwiye.ENIG irakwiriye kandi kugurisha insinga (Al) kugurisha.ENIG irasabwa cyane kubibaho bikenera kugurisha ibicuruzwa kuko bihujwe nuburyo butandukanye bwo guterana nka SMT, chip flip, Kugurisha-Hole kugurisha, guhuza insinga, hamwe nikoranabuhanga rikwiye.Ubuso butagira amashanyarazi Ni / Au buhagaze hamwe nubushyuhe bwinshi bwumuriro no gukora umwanda.
ENIG itwara amafaranga arenze HASL, OSP, Ifeza ya Immersion na Tin Immersion.Ikariso yumukara cyangwa Fosifore yumukara bibaho rimwe na rimwe mugihe cyibikorwa aho kwiyongera kwa fosifori hagati yabyo bitera guhuza nabi hamwe nubuso bwacitse.Ikindi kibi kivuka ni ibintu bya magnetiki bitifuzwa.
Ibyiza:
- Ubuso bwa Flat - Nibyiza cyane guteranya ikibuga cyiza (BGA, QFP…)
- Kugira ubwiza buhebuje
- Ubuzima Burebure bwa Shelf (hafi amezi 12)
- Kurwanya guhura neza
- Nibyiza cyane PCBs z'umuringa
- Bikunzwe kuri PTH
- Nibyiza kuri flip chip
- Birakwiriye kubanyamakuru
- Umugozi Wiziritse (Iyo Aluminium Ikoreshwa)
- Amashanyarazi meza cyane
- Gukwirakwiza ubushyuhe bwiza
Ibibi:
- Birahenze
- Fosifore yumukara
- Kwivanga kwa Electromagnetic, Gutakaza Ibimenyetso Byingenzi Kumurongo mwinshi
- Ntibishobora gukora
- Ntibikwiriye Gukoraho Padiri
Ibikoreshwa cyane:
- Ibice bigoye byubuso nka Ball Grid Arrays (BGAs), Quad Flat Packages (QFPs).
- PCBs hamwe na tekinoroji ivanze ya tekinoroji, kanda-ikwiye, PTH, guhuza insinga.
- PCBs hamwe no guhuza insinga.
- Porogaramu yizewe cyane, urugero PCBs mu nganda aho usanga neza kandi biramba ari ngombwa, nk'ikirere, igisirikare, ubuvuzi ndetse n'abaguzi bo mu rwego rwo hejuru.
Nkumuyobozi wambere PCB hamwe na PCBA ibisubizo bitanga uburambe bwimyaka irenga 15, PCB ShinTech irashoboye gutanga ubwoko bwubwoko bwose bwibihimbano bya PCB hamwe nibishobora guhinduka.Turashobora gukorana nawe kugirango utezimbere ENIG, HASL, OSP nizindi mbaho zumuzunguruko zabigenewe kubisabwa byihariye.Turerekana ibiciro byapiganwa PCB yibyuma byibanze / aluminiyumu kandi birakomeye, byoroshye, byoroshye, kandi hamwe nibikoresho bisanzwe bya FR-4, TG ndende cyangwa ibindi bikoresho.
InyumaKuri Blog
Igihe cyo kohereza: Mutarama-28-2023
