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Binyuze mubikorwa muburyo bwinshi bwa PCB

Binyuze mubikorwa muburyo bwinshi bwa PCB

impumyi yashyinguwe

Vias nikimwe mubice byingenzi bigizeguhimba PCB, hamwe nigiciro cyo gucukura mubisanzwe bingana na 30% kugeza 40% yikiguzi cyaPCB prototype.Binyuze mu mwobo ni umwobo wacukuwe kuri laminate y'umuringa.Itwara imiyoboro hagati yuburyo kandi ikoreshwa muguhuza amashanyarazi no gutunganya ibikoresho.impeta.

Uhereye kubikorwa byo guhimba PCB igizwe nabantu benshi, vias igabanijwemo ibyiciro bitatu, aribyo, umwobo, imyobo yashyinguwe kandi binyuze mumyobo.Mubihimbano byinshi bya PCB no kubyaza umusaruro, ibisanzwe binyuze mubikorwa birimo binyuze mumavuta yo gupfuka, ukoresheje amavuta acomeka, ukoresheje gufungura idirishya, resin plug umwobo, kuzuza umwobo wa electroplating, nibindi. Buri gikorwa gifite umwihariko wacyo.

1. Binyuze mu mavuta

“Amavuta” akoresheje amavuta yo gupfukirana yerekeza ku mavuta ya masike yagurishijwe, kandi binyuze mu mavuta yo gutwikira umwobo ni ugupfuka impeta y'umwobo unyuze mu mwobo hamwe na wino ya masike.Intego yo kunyuza amavuta yo gupfuka ni ugukingura, birakenewe rero kwemeza ko igipfundikizo cya wino yimpeta yuzuye kandi yuzuye umubyimba uhagije, kugirango amabati atazafatana na patch na DIP nyuma.Hano twakwibutsa ko niba dosiye ari PADS cyangwa Protel, iyo yoherejwe muruganda rugizwe na PCB rugizwe n’amavuta menshi, ugomba gusuzuma neza niba icomeka (PAD) rikoresha binyuze, kandi niba aribyo, ibyawe gucomeka umwobo uzaba utwikiriwe namavuta yicyatsi kandi ntushobora gusudwa.

2. Binyuze mu idirishya

Hariho ubundi buryo bwo guhangana na "ukoresheje amavuta yo gupfuka" mugihe unyuze mu mwobo.Binyuze mu mwobo na gromet ntibigomba gutwikirwa amavuta yo kugurisha.Gufungura umwobo bizongera ubushuhe bwo gukwirakwiza ubushyuhe, bufasha gukwirakwiza ubushyuhe.Kubwibyo, niba ibisabwa byo gukwirakwiza ubushyuhe bwibibaho biri hejuru, gufungura inzira binyuze mu mwobo birashobora gutoranywa.Mubyongeyeho, niba ukeneye gukoresha multimeter kugirango ukore imirimo yo gupima kuri vias mugihe cyo guhimba PCB, noneho kora vias.Nubwo bimeze bityo ariko, hari ibyago byo gufungura unyuze mu mwobo - biroroshye gutera padi kuba mugufi.

3. Binyuze mu gucomeka amavuta

Binyuze mu gucomeka amavuta, ni ukuvuga, mugihe PCB itunganijwe kandi ikabyara umusaruro, wino ya mask yo kugurisha yabanje gucomeka mu mwobo ukoresheje urupapuro rwa aluminiyumu, hanyuma amavuta ya mask yo kugurisha agacapwa ku kibaho cyose, kandi byose akanyura mu mwobo. ntizatanga urumuri.Ikigamijwe ni uguhagarika vias kugirango wirinde amasaro y'amabati kwihisha mu mwobo, kubera ko amasaro y'amabati azatemba kuri padi igihe azashonga ku bushyuhe bwinshi, bigatera imiyoboro migufi, cyane cyane kuri BGA.Niba vias idafite wino ikwiye, impande zumwobo zizahinduka umutuku, bitera "umuringa wibinyoma" ni bibi.Mubyongeyeho, niba unyuze mu mwobo ucomeka amavuta bidakozwe neza, bizanagira ingaruka kumiterere.

4. Kuramo umwobo

Umwobo wa resin usobanura gusa ko nyuma yurukuta rwumwobo rushyizwemo umuringa, unyuze mu mwobo wuzuyemo epoxy resin, hanyuma umuringa ugashyirwa hejuru.Ikibanza cya resin icomeka ni uko hagomba kuba umuringa usize umwobo.Ibi ni ukubera ko ikoreshwa rya resin icomeka muri PCBs ikoreshwa kubice bya BGA.Gakondo BGA irashobora gukoresha ikoresheje hagati ya PAD na PAD kugirango uhuze insinga inyuma.Ariko, niba BGA yuzuye cyane kandi Via ntishobora gusohoka, irashobora gucukurwa biturutse kuri PAD.Kora Via muyindi igorofa kugirango uhuze insinga.Ubuso bwibihimbano byinshi PCB byakozwe na resin icomekaho umwobo nta mwobo ufite, kandi ibyobo birashobora gufungura bitagize ingaruka ku kugurisha.Kubwibyo, itoneshwa kubicuruzwa bimwe bifite urwego rwo hejuru kandiikibaho kinini.

5. Kwuzuza amashanyarazi no kuzuza umwobo

Gukwirakwiza amashanyarazi no kuzuza bivuze ko vias zuzuyemo umuringa wa electroplate mu gihe cyo guhimba PCB igizwe n'abantu benshi, kandi hepfo yu mwobo hareshya, ntabwo bifasha gusa gushushanya ibyobo byegeranye kandiBinyuze mu makarito, ariko kandi ifasha kunoza imikorere yamashanyarazi, gukwirakwiza ubushyuhe, no kwizerwa.


Igihe cyo kohereza: Ugushyingo-12-2022