Umhlahlandlela Wokukhetha Umkhiqizi we-PCB Onezinhlangothi Ezimbili

Kugcine ukubuyekezwa: Meyi 2026 · Umhlahlandlela womthengi nomklami wamabhodi wesekethe aphrintiwe anezingqimba ezimbili

I -PCB enamacala amabili (ebizwa nangokuthi ibhodi elinezingqimba ezimbili) inethusi kokubili phezulu nangaphansi kwe-substrate, kanti izinhlangothi ezimbili zixhunywe ngogesi ngemigodi efakwe amapulangwe. Lolu uhlobo lwebhodi oluvame kakhulu kuma-electronics avamile ngoba cishe luphinda kabili indawo yokuqondisa yebhodi elinohlangothi olulodwa ngenkathi luhlala lushibhile kakhulu futhi lulula kune-stack enezingqimba eziningi. Lo mhlahlandlela uhlanganisa ukuthi ibhodi elinohlangothi oluphindwe kabili liyini, ukuthi umenzi uyalakha kanjani, lapho lingena khona phakathi kwe-single-side ne-multilayer, nokuthi yini ehlukanisa umenzi we -PCB onezinhlangothi ezimbili onokwethenjelwa kwe-double-side kwenye eyingozi.

Iyini i-PCB Enezinhlangothi Ezimbili? (Incazelo Yebhodi Elinezingqimba Ezimbili)

Qala nge-substrate — ngokuvamile i-FR-4 fiberglass laminate embozwe ngeshidi elincane lethusi ebusweni ngabunye. Ebhodini elinohlangothi olulodwa, ubuso obubodwa kuphela obuphethe i-circuitry. Ebhodini elinohlangothi oluphindwe kabili , ubuso bobabili buqoshwe baba yizicucu kanye nama-pad, futhi izendlalelo ziboshwe ndawonye ngokubhoboza imigodi ebhodini bese zimboza izindonga zazo ngethusi. Lezo zimbobo ezimbozwe zenza imisebenzi emibili: zithwala izimpawu phakathi kwephezulu nephansi, futhi zakha imiphongolo lapho izintambo zengxenye embozwe zenza khona.

Izinhlobo ezimbili zokuxhumanisa zibalulekile lapha. Imbobo egqitshwe nge-plated through-hole (PTH) idlula ebhodini lonke. I-A via imbobo egqitshwe nge-plated esetshenziselwa ukuhambisa isignali phakathi kwezingqimba (akukho ntambo yengxenye kuyo). Ebhodini elinezingqimba ezimbili, ama-via ayizixhumanisi ezilula ukusuka phezulu kuya phansi; ama-via angaboni futhi agqitshwe emiklamo ye-HDI awadingeki.

Ikhiqizwa Kanjani I-PCB Enezinhlangothi Ezimbili? (Isinyathelo Ngesinyathelo)

Ukugeleza kokwenziwa yikona okuguqula i-laminate egqokiwe ibe ibhodi eliqediwe. Inqubo ejwayelekile enamacala amabili isebenza kanje:

1. Sika bese ubhoboza: I-laminate isikwe ngosayizi wephaneli bese ibholwa nge-CNC ukuze kudalwe yonke imbobo edlulayo futhi idlule kuma-coordinates kufayela lakho lokubhoboza.
2. Ithusi elingena-electro (i-desmear kanye ne-deposition): ungqimba oluncane lwethusi lwamakhemikhali lubekwa phezu kwephaneli lonke, kufaka phakathi izindonga zemigodi engenalutho, ukuze imigodi ikwazi ukumbozwa kamuva. Lesi yisinyathelo esibalulekile esenza imigodi ihambisane.
3. Ukudluliselwa kwesithombe: i-photoresist ifakwa i-laminate futhi ivezwe emsebenzini wakho wobuciko, okuchaza ukuthi ithusi lizosala kuphi.
4. I-Electroplating: ithusi lifakwe phezu kwemigqa nangaphakathi kwemigodi ukuze libe likhulu ngokuphelele; ukumelana nethini kuvikela ithusi elifunekayo.
5. Ukuqopha nokusika: ithusi elingafuneki liyasuswa bese kuthi isivikelo sisuswe, kushiye iphethini eliqediwe nhlangothi zombili.
6. Imaski ye-solder: Imaski eluhlaza (noma eminye imibala) iyafakwa futhi ipholiswe, ishiye ama-pad eveziwe.
7. Isikrini sesilika: Kuphrintwa ama-reference designators, amamaki e-polarity, nama-logo.
8. Ekupheleni kwendawo: ithusi eliveziwe liyambozwa — i-HASL, i-HASL engenalo i-lead, i-ENIG, noma i-OSP — ukuze lihlale likwazi ukushintshwa.
9. Ukuhlolwa kwephrofayili kanye nogesi: uhlaka lwebhodi luyaqondiswa noma lubekwe amaphuzu, bese ukuhlolwa kwe-flying-probe noma kwe-fixture kuqinisekisa ukuthi azikho izimbobo ezivulekile noma ezimfushane ngaphambi kokuthunyelwa.

I-PCB Enohlangothi olulodwa vs Enohlangothi oluphindwe kabili vs I-PCB Enezingqimba eziningi

Kungani Kufanele Usebenzise I-PCB Enezinhlangothi Ezimbili? Izinzuzo Eziyinhloko

• Igumbi lokuqondisa elengeziwe: Izindiza ezimbili zethusi zikuvumela ukuthi uwele izimpawu ngaphezulu nangaphansi komunye nomunye esikhundleni sokufaka yonke into ohlangothini olulodwa.
• Izingxenye ebusweni bobabili: Izingxenye ezifakwa ebusweni zingagcwala phezulu nangaphansi, indawo yebhodi incipha.
• Indlela eya endizeni yasemhlabeni: Ukunikezela ingxenye enkulu yohlangothi olulodwa emhlabathini kuthuthukisa izindlela zokubuyela emuva, kunciphisa umsindo, futhi kusiza i-EMC — inzuzo ibhodi elinohlangothi olulodwa elingenakukwazi ukuyinikeza.
• Kusathengeka: Ibhodi elinezingqimba ezimbili libiza kancane kunelinohlangothi olulodwa futhi lishibhile kakhulu kunelisebenzisa izingqimba ezine.

Izicelo Ezivamile Zama-PCB Anezinhlangothi Ezimbili

Inani lezingqimba zomsebenzi liphindwe kabili. Izindlu ezijwayelekile zalo zifaka phakathi izibani ze-LED kanye nezishayeli, izinsiza zikagesi kanye neziguquli, izilawuli zezimboni kanye nezinzwa, amadivayisi e-IoT kanye ne-automation yasekhaya, izesekeli zezimoto, izinsimbi, kanye neningi lezinto zokuzilibazisa kanye namaphrojekthi ekilasi le-Arduino. Lapho isivinini sesiginali somklamo, inani lephinikhodi, noma izidingo zomsindo zikhuphuka, leso yisizathu sokuhlola izendlalelo ezine noma ngaphezulu.

Amathiphu Okuklama i-PCB Ezinhlangothi Zimbili Okukhiqiza Okuphezulu

• Hlonipha imithetho yendandatho ejikelezayo kanye neyokubhoboza yomenzi. Ama-pad adinga indandatho yethusi eyanele nxazonke zembobo ngayinye ukuze ukubhoboza okuncane kungaphuli uxhumano.
• Sebenzisa ukuthulula okugayiwe ohlangothini olulodwa bese uyithunga ngama-via ukuze unikeze izimpawu indlela ehlanzekile nemfushane yokubuya.
• Gcina umkhondo/isikhala esincane ngaphakathi kwamandla e-fab (ngokuvamile ingama-6/6 mil noma aqine kakhulu); ungaklami ububanzi obungalingani nomphakeli wakho.
• Engeza ama-via afakwe amatende noma avaliwe kuphela lapho kudingeka khona, futhi ugweme ama-via kuma-SMD pads ngaphandle kokuthi agcwalisiwe futhi abekwe phezu kwawo.
• Nikeza isethi ephelele yokukhipha — I-Gerber noma i-ODB++, i-NC drill, kanye nohlaka lwebhodi — bese uhlola imithetho yokuklama ngaphambi koku-oda.

Ibiza Malini i-PCB Enezinhlangothi Ezimbili? Intengo Ephakeme

Kwibhodi elinezingqimba ezimbili, izindleko ezinkulu kakhulu usayizi webhodi kanye nobuningi, isisindo sethusi, inani kanye nosayizi omncane kakhulu wemigodi ebholiwe, ukuqeda ubuso (i-HASL ishibhile kakhulu; i-ENIG ibiza kakhulu kodwa ama-solder angcono kakhulu nge-fine-pitch), izinketho ze-solder-mask kanye ne-silkscreen, kanye nesigaba sokubekezelelana. Isikhala/isikhala esiqinile, i-impedance elawulwayo, kanye nama-laminate angavamile konke kwengeza izindleko. Indlela eshibhile kakhulu ukugcina umklamo ngaphakathi kwamakhono ajwayelekile kanye nama-paneli kahle ngokwenani olidingayo ngempela.

Ukuqedwa Komphezulu Kwama-PCB Anezinhlangothi Ezimbili (HASL, ENIG, OSP)

Ukuphela kobuso kuvikela ithusi eliveziwe futhi kunquma ukuthi amabhodi asebenza kahle kangakanani. Ebhodini elinezingqimba ezimbili ukukhetha ikakhulukazi ibhalansi yezindleko, isikhathi sokuphelelwa yisikhathi, nokuthi ama-pad akho mahle kangakanani.

Umthetho olula: uma ibhodi lisebenzisa izindleko futhi ama-pad engemancane, i-HASL noma i-HASL engenalo i-lead ilungile. Uma ithwala ama-IC noma ama-BGA athambile, noma idinga indawo eyisicaba, ehlala isikhathi eside, i-ENIG ivame ukuba yifanele le ntengo. I-OSP ifanela amabhodi anomthamo ophezulu, ajika ngokushesha ahlanganiswe ngokushesha ngemva kokwenziwa.

Okufanele Ukucacise Lapho U-oda I-PCB Enezinhlangothi Ezimbili

Inothi elicacile lokuqamba livimbela ukucabanga okuphambene nokuphambene. Uma ufuna ibhodi elizinhlangothi zombili, tshela umenzi:

Indlela Yokukhetha Umkhiqizi we-PCB Onezinhlangothi Ezimbili

Umhlinzeki onekhono onezinhlangothi ezimbili kulula ukumthatha kalula, kodwa ikhwalithi yezimbobo ezifakwe ipulasitiki, ukubhaliswa phakathi kwezinhlangothi ezimbili, ukulungelelaniswa kwemaski yesolder, kanye nokuhlolwa kukagesi konke kunquma ukuthi ibhodi lisebenza okokuqala yini. Funa amakhono acacile ashicilelwe, isibuyekezo sobunjiniyela ngaphambi kokwakhiwa, ukuhlolwa kukagesi kuwo wonke amabhodi, kanye nokuxhumana kobuchwepheshe okuphendulayo.

I-Highleap Electronics (eyasungulwa ngo-2002) yakha amabhodi anezinhlangothi ezimbili njengengxenye yobubanzi bokukhiqiza obuhamba kuze kufike ku-HDI enezingqimba ezingu-60 kanye ne-rigid-flex — okusho ukuthi i-oda elilula elinezingqimba ezimbili liphathwa nge-plating efanayo, ukubhaliswa, kanye ne-test discipline esetshenziswa emsebenzini onzima kakhulu:

• Ukwakhiwa kwe-PCB kwamabhodi angawodwa, amabili, kanye nanezingqimba eziningi anokuhlolwa kukagesi njengokujwayelekile.
• FR-4 amabhodi kanye nama-laminate akhethekile e-substrate oyidingayo isicelo sakho.
• Isibuyekezo samahhala se-DFM ukubamba izinkinga zendandatho ejikelezayo, ukubhoboza, kanye nokususwa kwesikhala ngaphambi kokuba zifike emgqeni.
• Indlela yokukhulisa: uma iphrothokholi enezingqimba ezimbili idinga kamuva I-HDI or eqinile-flex, umhlinzeki ofanayo angayakha.

Imibuzo Evame Ukubuzwa Ngomkhiqizi We-PCB Onezinhlangothi Ezimbili

Iyini i-PCB enamacala amabili?

Ibhodi lesifunda eliphrintiwe elinezijikelezo zethusi ezinhlangothini zombili ze-substrate, elixhunywe ebhodini ngezimbobo ezifakwe amapulangwe. Libizwa nangokuthi ibhodi elinezingqimba ezimbili.

Uyini umehluko phakathi kwe-double-side kanye ne-2-layer?

Zisho into efanayo ekusetshenzisweni kwansuku zonke: izendlalelo ezimbili zethusi, phezulu nangaphansi. “Inani lezingqimba” limane libala izendlalelo zethusi eziqhubayo.

Kufanele ngishintshe nini kusukela ebhodini elinezinhlangothi ezimbili ukuya ebhodini elinezingqimba ezine?

Uma uphelelwa yigumbi lokuqondisa, udinga indawo engaphansi kanye nendiza yamandla ezinikele ukuze uthole ubuqotho besiginali, noma usebenza ngamasignali esivinini esikhulu noma e-RF adinga ukuvimba okulawulwayo.

Ingabe amabhodi anezinhlangothi ezimbili abiza kakhulu kunalawo anezinhlangothi eyodwa?

Kancane kancane, ngenxa yesithombe esengeziwe, i-plating, kanye nesinyathelo se-plating esingena embobeni — kodwa sincane kakhulu kunokugxuma uye ku-multilayer. Emikhiqizweni eminingi ikhono elengeziwe lifanele umehluko wezindleko ezincane.

Ingabe izingxenye zingafakwa nhlangothi zombili?

Yebo. Izingxenye ezifakwa ngaphezulu zingagcwala ubuso bobabili, okuyisinye sezizathu eziyinhloko zokukhetha ibhodi elizinhlangothi ezimbili. Ukuhlanganiswa kumane kugijimise uhlangothi lwesibili ngokugeleza kabusha.

Yimaphi amafayela adingwa umenzi ukuze akhe i-PCB enezinhlangothi ezimbili?

Ubuciko be-Gerber (RS-274X/X2) noma be-ODB++ bezendlalelo zethusi zombili, imaski yokwelula kanye nezendlalelo zesikrini se-silkscreen, ifayela lokubhoboza le-NC, kanye nohlaka lwebhodi. Thumela inothi lokwenziwa ukuze kuqedwe, isisindo sethusi, kanye nokubekezelelana.