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Nigute Uhitamo Surface Kurangiza Kubishushanyo bya PCB

--- Igitabo cyinzobere kuri PCB Ubuso burangiye

Ⅰ Niki kandi Nigute

Byoherejwe:Ugushyingo15, 2022

Ibyiciro: Blog

Etiquetas: pcb,pcba,inteko ya pcb,pcb, ibihimbano

Iyo bigeze ku buso burangiye, hari amahitamo atandukanye, urugero: HASL, OSP, ENIG, ENEPIG, Zahabu ikomeye, ISn, IAg, nibindi. Rimwe na rimwe, birashobora kuba byoroshye gufata icyemezo, nkumuhuza ujya kumurongo. zahabu;HASL cyangwa HASL-yubusa irahitamo kubice binini bya SMT.Ariko, birashobora kuba ingorabahizi guhitamo icyarangira kubibaho bya HDI hamwe na Ball Grid Arrays (BGAs) niba ntakindi kimenyetso.Hariho ibintu nka bije yawe yuyu mushinga, ibisabwa kugirango wizere cyangwa imbogamizi zigihe cyo gukora zigomba gutekerezwa kubintu bimwe.Buri bwoko bwubuso bwa PCB burangije bufite ibyiza nibibi, birashobora kuba urujijo kubashushanya PCB guhitamo icyabereye kubibaho bya PCB.Turi hano kugirango tubafashe kubimenya hamwe nuburambe bwimyaka myinshi nkumushinga.

1. Kurangiza PCB ni iki

Gushyira hejuru kurangiza (kuvura hejuru / gutwikira hejuru) nimwe muntambwe yanyuma yo guhimba PCB.Kurangiza hejuru bigira intera yingenzi hagati yubuyobozi bwa PCB yambaye ubusa nibigize, ikorera kubintu bibiri byingenzi, kugirango itange ubuso bugurishwa inteko ya PCB no kurinda umuringa usigaye ugaragara harimo ibimenyetso, amakariso, umwobo nindege zubutaka kwirinda okiside cyangwa kwanduza, mugihe mask yo kugurisha itwikiriye ubwinshi bwumuzunguruko.

Kurangiza isura nibyingenzi muburyo bwo guhimba PCB ShinTech.Gutanga ubuso bugurishwa inteko ya PCB no kurinda umuringa wagaragaye okiside no kwanduza.

Ubuso bugezweho burangirira kubusa, hakurikijwe Kubuza Ibintu Byangiza (RoHS) nubuyobozi bwimyanda yamashanyarazi nibikoresho bya elegitoronike (WEEE).Amahitamo ya PCB agezweho yo kurangiza arimo:

● LF-HASL (Kurongora Ubusa Ubushyuhe bwo Kugurisha Umuyaga)
● OSP (Organic Solderability Preservatives)
● ENIG (Zahabu ya Immerion Nickel)
● ENEPIG (Electroless Nickel Electroless Palladium Immersion Zahabu)
Nikel Electrolytic Nickel / Zahabu - Ni / Au (Ikomeye / Zahabu Yoroshye)
Silver Ifeza yibiza, IAg
●Amabati yera cyangwa Amabati, ISn

2. Nigute ushobora guhitamo kurangiza kuri PCB yawe

Buri bwoko bwubuso bwa PCB burangije bufite ibyiza nibibi, birashobora kuba urujijo kubashushanya PCB guhitamo icyabereye kubibaho bya PCB.Guhitamo igikwiye kubishushanyo byawe bisaba kuzirikana ibintu byinshi nkibi bikurikira.

★ Budge
Ibibaho byumuzunguruko wanyuma wibidukikije (urugero ubushyuhe, vibrasiya, RF).
Ibisabwa kubayobora kubisaba kubuntu, bitangiza ibidukikije.
Ibisabwa byizewe kubuyobozi bwa PCB.
Ubwoko bwibigize, ubucucike cyangwa ibisabwa mu guterana urugero kanda neza, SMT, guhuza insinga, Kugurisha umwobo, nibindi ..
Ibisabwa kuburinganire bwa SMT padi ya BGA.
Ibisabwa kubuzima bwa Shelf no gukora neza kurangiza.
★ Kurwanya / guta imbaraga.Kurugero, ENIG ntabwo ikwiranye na terefone yubwenge kuko terefone yubwenge isaba amabati ya tin-umuringa kugirango uhungabanye cyane kandi ugabanuke aho kuba tin-nikel.
Ubwinshi nibisohoka.Kubwinshi bwinshi bwa PCBs, amabati yo kwibiza arashobora kuba amahitamo yizewe kandi ahendutse kuruta ENIG na Immersion Silver hamwe nibibazo bya sensibilité yanduye birashobora kwirindwa.Ibinyuranye, ifeza yo kwibiza iruta ISn mugice gito.
★ Kwangirika kwangirika cyangwa kwanduza.Kurugero, kwibiza ifeza kurangiza bikunda kwangirika.Amabati yombi ya OSP na Immersion yunvikana mugukemura ibyangiritse.
★ Ubwiza bwinama, nibindi ..

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Igihe cyo kohereza: Ugushyingo-15-2022