Ukuhlolwa Nokwamukelwa Kwekilasi 3 le-IPC-A-610

Ukuhlolwa nokwamukelwa kwe-IPC-A-610 Class 3 kusekela ukuhlanganiswa kwe-PCB okunokwethenjelwa okuphezulu ngokunikeza ikhasimende kanye nomhlanganisi isisekelo esifanayo sokubuyekezwa komsebenzi lapho indinganiso kanye nesigaba kucacisiwe. I-Highleap Electronics ingahlola amabhodi ahlanganisiwe ngokwezidingo zamakhasimende ezivunyelwene ngazo, isebenzisa ukuhlolwa okubonakalayo, i-AOI, i-X-ray, ukubuyekezwa kwesihloko sokuqala kanye nemibhalo lapho lezi zinto zifakiwe kububanzi besilinganiso.

I-IPC-A-610 iyindinganiso yokwamukelwa kwezinhlangano ze-elekthronikhi. Kufanele isetshenziswe nomdwebo wamakhasimende, amanothi omhlangano, i-BOM, izidingo zokuhlola kanye nanoma yiziphi izidingo zokunamathisela ezibhekiswe yikhasimende. Ukuhlolwa akuthathi indawo yokulawulwa kwenqubo efanele. Ukuhlanganiswa kweKlasi 3 kufanele kuhlelwe kusukela ekubuyekezweni kobunjiniyela kuya ekukhiqizweni, hhayi kuphela ekuhlolweni ekugcineni.

I-Highleap iphatha ukuhlolwa kwe-IPC-A-610 Class 3 njengengxenye yephakheji yokukhiqiza evunyelwene ngayo kanye nekhwalithi. Ikhasimende kufanele libone ukubuyekezwa okujwayelekile, isigaba sokuhlanganiswa kanye nezidingo zokudweba ezengeziwe. Uma iphrojekthi idinga nezidingo zokushisela ze-J-STD-001, amanothi okusebenza kwamakhasimende noma ukuvunyelwa kwesihloko sokuqala, lezo zidingo kufanele zinikezwe ngaphambi kokukhishwa kwesakhiwo.

Ububanzi Bokuhlola Bekilasi 3 le-IPC-A-610

Ububanzi bokuhlola kufanele buchazwe ngaphambi kokuqala kokukhiqiza. Ukuhlolwa kwe-Class 3 kungafaka phakathi ukubuyekezwa kokubekwa kwezingxenye, ukubuyekezwa kwejoyinti le-solder, ukuhlolwa kwe-solder embobeni, ukuhlolwa kwe-solder ye-SMT, ukubuyekezwa kokuhlanzeka noma kwezinsalela uma kuchaziwe, ukumaka kanye nokubuyekezwa kwesimo semishini, kanye nokubhalwa kwanoma yikuphi ukungavumelani noma ukuphambuka okuvunyiwe.

Ukuhlolwa okuhlobene nezidingo ezikhishwe

Umhloli kufanele abukeze ukuhlanganiswa ngokumelene nokubuyekezwa okufanele kanye nesigaba esibekiwe. Uma umdwebo usho iSigaba 3, uhlelo lokuhlola kufanele lubonise lokho. Uma ikhasimende lidinga ezinye izindlela zokuhlola, lezo zindlela zokuhlola kufanele zitholakale eqenjini lokukhiqiza kanye nelokuhlola ngaphambi kokuba kuqale ukwakha.

Ukuhlolwa kuncike nasekufinyelelekeni kwengxenye. I-lead ebonakalayo yephiko le-gull ingahlolwa ngendlela ehlukile kunebhola le-BGA noma i-QFN thermal pad. Uma amalunga e-solder afihliwe ebaluleke kakhulu, izidingo ze-X-ray kufanele zibhalwe ku-RFQ kunokuba zicatshangelwe ngemva kokuhlanganiswa.

Ukubekwa Kwengxenye kanye Nokwamukelwa Kwejoyinti Le-Solder

Ukubekwa kwezingxenye kanye nokwamukelwa kwejoyinti le-solder kuyimbangela yokuhlolwa kwe-PCBA. Ukubuyekezwa kuhlola ukuthi izingxenye zibekwe kahle yini, amalunga e-solder akheke ngendlela eyamukelekayo nokuthi amaphutha alawulwa ngaphambi kokuthunyelwa. Ukuhlolwa kwe-Class 3 kuvame ukusebenzisa ukulindela okuqinile komsebenzi kunezigaba eziphansi.

Ukubuyekezwa kokubekwa

Ukubuyekezwa kokubekwa kuhlola i-polarity, ukuma, ukufana kwephakeji, ukushintsha kwezingxenye, ukusonteka, ukuqondanisa kwe-lead kanye nomonakalo womshini. Izingxenye ezi-polarized ezifana nama-diode, ama-capacitor e-electrolytic, ama-IC, izixhumi nama-LED kufanele zifane nomdwebo wokuhlanganisa kanye nezimpawu zesikrini se-silkscreen noma zebhodi. Uma ukumakwa kwebhodi kungqubuzana nomdwebo, inkinga kufanele icaciswe ngaphambi kokuba kuqhubeke ukukhiqizwa.

Isibuyekezo esihlangene se-Solder

Ukubuyekezwa kwejoyinti le-solder kuhlola ukumanzisa, ivolumu ye-solder, ibhuloho, i-solder enganele, ama-lead aphakanyisiwe, i-solder ephazamisekile kanye nezinye izimo zomsebenzi. Ukuze kube nokuhlanganiswa okuthembekile kakhulu, amaphutha e-solder kufanele alungiswe ngokulungiswa kabusha okulawulwayo kuphela uma ukulungiswa kabusha kuvunyelwe futhi kuphephile kwengxenye kanye ne-PCB.

Ukwamukelwa okuhle kwejoyinti le-solder kuqala ngaphambi kokuhlolwa. Ukwakheka kwephedi, ukuvuleka kwe-stencil, ukukhethwa kokunamathisela, ukuqeda izingxenye, ukuqeda kwendawo, iphrofayili yokugeleza kabusha kanye nobunzima bokushisa bebhodi konke kunegalelo emphumeleni. Ukuhlolwa kungabona amaphutha, kodwa ukulawula inqubo kuyawavimbela.

Ukuhlolwa Kokuhlanganiswa Kwezimbobo Ezingena Ngezimbobo kanye Ne-SMT

I-SMT kanye nokushisela ngembobo edlulayo kunezinkinga zokuhlola ezahlukene. Ukuhlolwa kwe-SMT kugxile emaphaketheni amancane, indawo yomthofu, imiphumela yokunamathisela umthofu kanye nekhwalithi yokugeleza kabusha. Ukuhlolwa kwembobo edlulayo kugxile ekugcwalisweni komthofu, ukumanzisa, ukuphuma komthofu, isimo sembobo kanye nemiphumela yobuningi bokushisa. Izinhlangano ezixubile zidinga zombili izindlela.

Ngomsebenzi weSigaba sesi-3, indlela yenqubo kufanele inikeze amathuba okuhlola ngaphambi kokuba izinkinga zifihlwe. Isibonelo, amalunga angaphansi angadinga ukubuyekezwa ngemva kokushiswa okukhethiwe, kanti ikhwalithi ye-BGA ingadinga i-X-ray ngaphambi kokumbozwa kwe-conformal noma ukuhlanganiswa kokugcina kwe-enclosure.

Izigaba Eziphelele kanye Namarekhodi Okwamukelwa

Ukuhlolwa kufanele kuhlukanise izimo ezamukelekayo, izinkomba zenqubo kanye namaphutha ngokwemigomo yokwamukela ecacisiwe. Lokhu kusiza ukugwema izinqumo ezizimele futhi kusekela ukuxhumana okucacile nekhasimende. Uma inkinga ingaphandle kwemigomo yokwamukela ecacisiwe, kufanele iphathwe ngokulungiswa kabusha, ukuvunyelwa kwekhasimende noma ukulawulwa kokuphambuka kuye ngemithetho ye-oda.

Sula umngcele wokwamukela

Ithimba lokukhiqiza kufanele lazi ukuthi yiziphi izimo ezamukelekayo, ezidinga ukubhekwa kanye nokuthi yiziphi okumele zilungiswe. Isibonelo, isimo sobuhle singase samukeleke komunye umkhiqizo kodwa singamukeleki komunye uma umdwebo wekhasimende ukuvimbela. Isimo somdayiseli singase sidlule iSigaba sesi-2 kodwa hhayi iSigaba sesi-3. Yingakho ikilasi elichaziwe kanye namanothi ekhasimende kumele kube khona ngaphambi kokuhlolwa.

Okuqukethwe kwerekhodi lokuhlola

Amarekhodi okuhlola angafaka inombolo yengxenye, ukubuyekezwa, inani lendawo, usuku lokuhlola, indlela yokuhlola, umphumela wokuphasa/wokwehluleka, incazelo yephutha, irekhodi lokulungisa kabusha kanye nokusayina komhloli. Uma kudingeka izithombe noma izithombe ze-X-ray, i-RFQ kufanele ichaze ifomethi elindelekile kanye nokugcinwa kwayo.

Amarekhodi kufanele abe usizo, hhayi ahlobise. Uma ikhasimende lidinga ubufakazi obusezingeni eliphezulu obungenayo, ukuvunyelwa kwesihloko sokuqala noma idatha yokudlulisa umkhiqizo, ifomethi yerekhodi kufanele isize kuleyo nqubo. Uma kudingeka ukuhlolwa okujwayelekile kuphela, iphakheji elula yerekhodi inganele.

Ukusekelwa kwe-AOI, i-X-Ray kanye nokuhlolwa ngesandla

Izindlela ezahlukene zokuhlola zifeza izinjongo ezahlukene. I-AOI iwusizo ezimweni eziningi ze-SMT ezibonakalayo. I-X-ray iwusizo ezingosini ezifihliwe kanye nezimo ezikhethiwe zemigodi lapho kudingeka. Ukuhlolwa ngesandla kusabalulekile ezindaweni zokubuyekeza ze-Class 3, imininingwane yemishini, izixhumi, izintambo, izingosini ezifakwe insimbi ngesandla kanye nezindawo lapho ukuhlolwa okuzenzakalelayo kunqunyelwe khona.

Uhlelo lokuhlola ngaphambi kokukhiqiza

Uhlelo lokuhlola kufanele kuvunyelwane ngalo ngaphambi kokukhiqiza. Uma kudingeka i-X-ray kuyo yonke i-BGA, noma uma kudingeka izithombe ukuze kuvunyelwe into yokuqala, lokhu kuthinta izindleko kanye nesheduli. Uma ikhasimende lidinga ukuhlolwa okujwayelekile kuphela, ikhotheshini akufanele icabange ukuthi iphakheji yamadokhumenti ibanzi kakhulu.

Kuma-oda aphindaphindwayo, uhlelo olufanayo lokuhlola kufanele luhlale luxhunywe ekubuyekezweni kwezingxenye. Uma ikhasimende lishintsha isigaba sokwamukelwa, iphakheji yamadokhumenti noma imfuneko yokuhlola esebenzayo, ikhotheshini kanye nohlelo lokukhiqiza kufanele kubuyekezwe ngaphambi kwenqwaba elandelayo.

Ukulawulwa Komsebenzi Kabusha Kwemihlangano Yekilasi 3

Ukulungisa kabusha kungabuyisela ukuhlanganisa esimweni esamukelekayo uma kwenziwa kahle, kodwa kungaletha nezingozi ezintsha. Ukuhlanganisa kweSigaba sesi-3 kufanele kusebenzise izinqubo zokulungisa kabusha ezilawulwayo, amathuluzi afanele, opharetha abaqeqeshwe kanye nokuhlolwa ngemva kokulungiswa. Ukulungisa kabusha okweqile noma okuphindaphindiwe kufanele kubuyekezwe ngoba kungalimaza ama-pad, izingxenye noma i-laminate.

Indlela yokwenza isinqumo kabusha

1. Thola iphutha: Qinisekisa inkinga ngokuhambisana nemibandela yokwamukela echaziwe.
2. Buyekeza ingozi yokulungisa: Hlola ukuzwela kwezingxenye, usayizi wephedi, ukuchayeka ekushiseni kanye nokufinyelela.
3. Yenza umsebenzi wokulungisa olawulwayo: Sebenzisa amathuluzi, izinto zokwakha kanye nemiyalelo evunyiwe.
4. Hlola ngemva kokuphinda usebenze: Qinisekisa indawo elungisiwe kanye nendawo ezungezile.
5. Qopha umphumela: Bhala kabusha uma ikhasimende lidinga amarekhodi.

Imvume yamakhasimende yamacala akhethekile

Okunye ukungavumelani kufanele kubuyekezwe nekhasimende ngaphambi kokulungiswa kabusha noma ukuthunyelwa. Izibonelo zifaka phakathi amaphedi alimele, ukushintshwa kwezingxenye ezibalulekile, ukulungiswa kabusha okuphindaphindiwe, izidingo zokudweba ezingacacile, izingxenye ezishintshwayo noma izimo lapho ukulungiswa kabusha kungathinta khona ukufaneleka. Ikhasimende kufanele lichaze imithetho yokugunyazwa kwezingxenye ezibalulekile.