Guhuza amashanyarazi hagati yibigize kuri PCBA bigerwaho hifashishijwe insinga z'umuringa no kunyura kuri buri cyerekezo.

Guhuza amashanyarazi hagati yibigize kuri PCBA bigerwaho hifashishijwe insinga z'umuringa no kunyura kuri buri cyerekezo. Bitewe nibicuruzwa bitandukanye, modules zitandukanye zubunini butandukanye bugezweho, kugirango ugere kuri buri gikorwa, abashushanya bakeneye kumenya niba insinga zabugenewe kandi zinyuze mu mwobo zishobora gutwara umuyaga uhuye, kugirango ugere kumikorere yibicuruzwa, wirinde ibicuruzwa kuva gutwika iyo birenze.

Hano haratangizwa igishushanyo nigeragezwa ryubu ubushobozi bwo gutwara insinga no gutambutsa umwobo kuri plaque ya FR4 isize umuringa hamwe nibisubizo byikizamini. Ibisubizo byikizamini birashobora gutanga ibisobanuro byabashushanyijeho mugihe kizaza, bigatuma igishushanyo cya PCB kirushaho gushyira mu gaciro kandi kijyanye nibisabwa ubu.

Guhuza amashanyarazi hagati yibigize kuri PCBA bigerwaho hifashishijwe insinga z'umuringa no kunyura kuri buri cyerekezo.

Guhuza amashanyarazi hagati yibigize kuri PCBA bigerwaho hifashishijwe insinga z'umuringa no kunyura kuri buri cyerekezo. Bitewe nibicuruzwa bitandukanye, modules zitandukanye zubunini butandukanye bugezweho, kugirango ugere kuri buri gikorwa, abashushanya bakeneye kumenya niba insinga zabugenewe kandi zinyuze mu mwobo zishobora gutwara umuyaga uhuye, kugirango ugere kumikorere yibicuruzwa, wirinde ibicuruzwa kuva gutwika iyo birenze.

Hano haratangizwa igishushanyo nigeragezwa ryubu ubushobozi bwo gutwara insinga no gutambutsa umwobo kuri plaque ya FR4 isize umuringa hamwe nibisubizo byikizamini. Ibisubizo byikizamini birashobora gutanga ibisobanuro byabashushanyijeho mugihe kizaza, bigatuma igishushanyo cya PCB kirushaho gushyira mu gaciro kandi kijyanye nibisabwa ubu.

Kuri iki cyiciro, ibikoresho byingenzi byanditseho uruziga (PCB) ni isahani yumuringa ya FR4. Umuringa wumuringa ufite ubuziranenge bwumuringa utari munsi ya 99.8% umenya guhuza amashanyarazi hagati yikintu cyose kiri mu ndege, kandi unyuze mu mwobo (VIA) umenya guhuza amashanyarazi hagati yumuringa wumuringa hamwe nikimenyetso kimwe kumwanya.

Ariko kuburyo bwo gushushanya ubugari bwa file yumuringa, uburyo bwo gusobanura aperture ya VIA, burigihe dushushanya kuburambe.

Kugirango habeho igishushanyo mbonera cyumvikana kandi cyujuje ibisabwa, ubushobozi bwo gutwara fayili yumuringa hamwe na diametre zitandukanye zapimwe, kandi ibisubizo byikizamini bikoreshwa nkibishushanyo mbonera.

Isesengura ryibintu bigira ingaruka kubushobozi bwo gutwara

Ingano iriho ya PCBA iratandukanye nibikorwa bya module yibicuruzwa, bityo rero dukeneye gusuzuma niba insinga zikora nkikiraro zishobora kwihanganira umuyaga unyuramo. Ibintu nyamukuru byerekana ubushobozi bwo gutwara ubu ni:

Ubunini bw'umuringa, ubugari bw'insinga, kuzamuka k'ubushyuhe, gushira mu mwobo. Mu gishushanyo nyacyo, dukeneye kandi gutekereza kubidukikije, tekinoroji yo gukora PCB, ubwiza bwa plaque nibindi.

1.Umubyimba wa kopi

Mugutangira iterambere ryibicuruzwa, umubyimba wumuringa wa PCB usobanurwa ukurikije igiciro cyibicuruzwa nuburyo bugezweho kubicuruzwa.

Mubisanzwe, kubicuruzwa bidafite umuyaga mwinshi, urashobora guhitamo hejuru (imbere) igipande cyumuringa kingana na 17.5 mm.

Niba igicuruzwa gifite igice cyumuyaga mwinshi, ingano yisahani irahagije, urashobora guhitamo ubuso (imbere) bwa metero zigera kuri 35 mm zuburebure bwumuringa;

Niba ibyinshi mubimenyetso biri mubicuruzwa biri hejuru cyane, igice cyimbere cyumuringa wumuringa kigera kuri 70 mm.

Kuri PCB ifite ibice birenga bibiri, niba ubuso hamwe numuringa wimbere wumuringa ukoresha uburebure bumwe na diametre imwe, ubushobozi bwo gutwara ibintu murwego rwo hejuru buruta ubw'imbere.

Fata ikoreshwa rya feri ya 35μm yumuringa kumurongo wimbere ninyuma ya PCB nkurugero: umuzenguruko wimbere urabagirana nyuma yo kuribwa, bityo ubunini bwumuringa wimbere ni 35μm.

Nyuma yo gutobora umuzenguruko wo hanze, birakenewe gucukura umwobo. Kuberako ibyobo nyuma yo gucukura bidafite imikorere yumuriro wamashanyarazi, birakenewe gushiramo umuringa udafite amashanyarazi, aribwo buryo bwose bwo gutunganya umuringa, bityo rero umuringa wo hejuru wumuringa uzaba ushyizwe hamwe nubunini runaka bwumuringa, muri rusange hagati ya 25 mm na 35 mm, umubyimba nyawo wa fayili yumuringa wo hanze ni nka 52.5 mm kugeza kuri 70 mm.

Uburinganire bwumuringa uratandukanye hamwe nubushobozi bwabatanga amasahani yumuringa, ariko itandukaniro ntabwo rifite akamaro, bityo ingaruka kumitwaro iriho irashobora kwirengagizwa.

2.Umurongo winsinga

Umubyimba wumuringa umaze gutoranywa, ubugari bwumurongo buhinduka uruganda rukomeye rwubushobozi bwo gutwara.

Hariho gutandukana hagati yagaciro kagenewe umurongo wubugari nagaciro nyako nyuma yo gutobora. Mubisanzwe, kwemererwa gutandukana ni + 10μm / -60μm. Kuberako insinga zashizwemo, hazaba hasigaye ibisigazwa byamazi mugice cyinsinga, bityo inguni ya wiring muri rusange izahinduka ahantu hacitse intege.

Muri ubu buryo, iyo ubaze agaciro k'umutwaro ugezweho kumurongo ufite inguni, agaciro k'umutwaro wapimwe kumurongo ugororotse ugomba kugwizwa na (W-0.06) / W (W ni ubugari bwumurongo, igice ni mm).

3.Ubushyuhe buzamuka

Iyo ubushyuhe buzamutse cyangwa burenze hejuru ya TG ubushyuhe bwa substrate, birashobora gutera ihinduka ryimiterere ya substrate, nko guturika no kubyimba, kugirango bigire ingaruka kumbaraga zihuza hagati yumuringa wumuringa na substrate. Ihindagurika ryimiterere ya substrate rishobora gutera kuvunika.

Nyuma yuko insinga ya PCB inyuze mumashanyarazi manini yinzibacyuho, ahantu hacitse intege cyane hifashishijwe insinga zumuringa ntishobora gushyushya ibidukikije mugihe gito, ugereranije na sisitemu ya adiabatic, ubushyuhe burazamuka cyane, bugera aho gushonga kwumuringa, hanyuma insinga z'umuringa zirashya .

4.Gushira mu mwobo

Gukwirakwiza amashanyarazi binyuze mu mwobo birashobora kumenya guhuza amashanyarazi hagati yuburyo butandukanye ukoresheje amashanyarazi umuringa kurukuta. Kubera ko ari isahani y'umuringa ku isahani yose, uburebure bw'umuringa bw'urukuta rw'umwobo ni kimwe ku bisate byanyuze mu mwobo wa buri aperture. Ubushobozi bwo gutwara ibintu byashizwe mu mwobo ufite ubunini butandukanye bwa pore biterwa na perimetero y'urukuta rw'umuringa