Ngomqondo obanzi, ukupakisha kuwukuhlanganisa idatha engabonakali kanye nemisebenzi ukuze kwakheke i-organic yonke. Ngokuvamile, izitsha zobumba, amapulasitiki, izinsimbi nezinye izinto zisetshenziselwa ukuvala, ukubeka, ukulungisa, ukuvikela kanye nokuthuthukisa ukusebenza kwe-electrothermal yamasekethe ahlanganisiwe we-semiconductor. Nge-chip Amaphuzu okuxhumana engxenyeni engenhla axhunywe nezikhonkwane zegobolondo lephakheji ngezintambo, ukuze kubonakale ukuxhumana namanye amasekethe ngokusebenzisa PCB; inkomba ebalulekile yokulinganisa ubuchwepheshe obuthuthukisiwe bephakheji ye-chip isilinganiso sendawo ye-chip endaweni yephakheji, lapho isilinganiso sisondela ku-1, kuhle kakhulu. Ngakho-ke yiziphi izinyathelo zokuphepha zokwenza ukupakishwa kwe-PCB?

Izinyathelo zokuqapha ukupakishwa kwe-pcb

Ngikholwa ukuthi abantu abenze ukwakheka kwehadiwe bazibonele ukwenza i-Component noma ukupakishwa kweMojula bebodwa, kodwa akulula kakhulu ukupakisha kahle. Ngikholwa ukuthi wonke umuntu unolwazi olunjalo:

(1) Iphinikhodi yephakeji edwetshiwe inkulu kakhulu noma incane kakhulu ukuthi ingadala ukuhlangana;

(2) Umdwebo wephakeji uhlehliswa, okubangela ukuthi Ingxenye noma Imojula ifakwe ngemuva ukuze ihambisane nezikhonkwane zohlelo;

(3) Izikhonkwane ezinkulu nezincane zephakeji ezidwetshiwe ziyahlehliswa, okubangela ukuthi ingxenye ibheke phansi;

(4) Iphakethe lomdwebo alihambisani neNgxenye noma Imojula ethengiwe, futhi ayikwazi ukuqoqwa;

(5) Uhlaka lwe-encapsulation lomdwebo lukhulu kakhulu noma luncane kakhulu, okwenza abantu bazizwe bengakhululekile.

(6) Uhlaka lwephakheji olupendiwe aluhambisani kahle nesimo sangempela, ikakhulukazi ezinye izimbobo ezifakwayo azibekwa endaweni efanele, okwenza kungenzeki ukufaka izikulufu. Futhi njalo, ngikholwa ukuthi abantu abaningi baye bahlangabezana nalolu hlobo lwesimo. Ngenza leli phutha muva nje, ngakho ngibhale isihloko esikhethekile namuhla ukuze ngiqaphe, isifundo sesikhathi esidlule, kanye nomhlahlandlela wesikhathi esizayo. Ngethemba ukuthi ngeke ngilenze iphutha elinjalo esikhathini esizayo.

Ngemuva kokudweba umdwebo we-schematic, iphakheji inikezwa izingxenye. Kunconywa ukusebenzisa iphakheji kulabhulali yephakheji yesistimu noma umtapo wezincwadi wephakheji yenkampani, ngoba lawa maphakheji aqinisekiswe ngabandulelayo. Uma ukwazi ukuzenzela, ungazenzeli wena. . Kodwa izikhathi eziningi kusadingeka sizenzele ngokwethu i-encapsulation, noma kufanele nginake ukuthi yiziphi izinkinga okufanele ngizinake lapho ngenza i-encapsulation? Okokuqala, kufanele sibe nosayizi wephakeji Yengxenye noma Imojuli eduze. Le datha ejwayelekile izoba nemiyalelo. Ezinye izingxenye ziphakamise amaphakheji kumininingwane. Lokhu kungukuthi kufanele siklame iphakheji ngokuvumelana nezincomo kudathabhethi; uma kunikezwe kudatha yedatha Usayizi wohlaka, khona-ke iphakheji likhulu ngo-0.5mm-1.0mm kunosayizi wohlaka. Uma isikhala sivuma, kuyanconywa ukuthi wengeze uhlaka noma ifremu Engxenyeni noma Emojulini lapho uhlanganisa; uma ngabe isikhala singavunyelwe ngempela, ungakhetha ukwengeza kuphela uhlaka noma uhlaka engxenyeni yoqobo. Kukhona futhi izindinganiso zamazwe ngamazwe zokupakisha ngentengo yokuqala. Ungabhekisela ku-IPC-SM-782A, IPC-7351 nezinye izinto ezihlobene.

Ngemva kokudweba iphasela, sicela ubheke le mibuzo elandelayo ukuze uyiqhathanise. Uma wenze yonke imibuzo elandelayo, akufanele kube nezinkinga ngephakheji olakhile!

(1) Ingabe iphimbo lokuhola lilungile? Uma impendulo ingucha, ungase ungakwazi ngisho nokudayisa!

(2) Ingabe idizayini yephedi inengqondo ngokwanele? Uma i-pad inkulu kakhulu noma incane kakhulu, ayihambisani ne-soldering!

(3) Ingabe iphakheji oliklame ngokombono we-Top View? Lapho uklama iphakheji, kungcono ukuklama ngokombono we-Top View, okuyi-engeli lapho izikhonkwane zengxenye zibukwa ngemuva. Uma iphakheji ingaklanywanga nge-engeli ye-Top View, ngemva kokuba ibhodi seliqediwe, kungase kudingeke ukuthi uthengise izingxenye ezinezikhonkwane ezine ezibheke esibhakabhakeni (izingxenye ze-SMD zingadayiswa kuphela ngezikhonkwane ezine ezibheke esibhakabhakeni) noma ngemuva ibhodi (izingxenye ze-PTH zidinga ukuthengiswa ngemuva).

(4) Ingabe indawo ehlobene ye-Pin 1 kanye ne-Pin N ilungile? Uma kungalungile, kungase kudingeke ukuthi kufakwe izingxenye ngokuphambene, futhi kungenzeka kakhulu ukuthi umthofu endizayo noma ibhodi lizochithwa.

(5) Uma izimbobo ezifakwayo zidingeka ephaketheni, ingabe izimbobo ezifakwayo zephakeji zilungile? Uma indawo ehlobene ingalungile, ayikwazi ukulungiswa, ikakhulukazi kwamanye amabhodi aneMojuli. Njengoba kunezimbobo ezifakwayo ku-Module, kukhona nezimbobo ezifakwayo ebhodini. Izikhundla ezihambisanayo zalokhu kokubili zihlukile. Ngemva kokuphuma kwebhodi, lezi ezimbili azikwazi ukuxhunywa kahle. Kumojuli enzima kakhulu, kuyanconywa ukuthi uvumele i-ME yenze ifremu yemojuli kanye nendawo yokubeka imbobo ngaphambi kokuklama iphakheji yemojuli.

(6) Ingabe umake uPhini 1? Lokhu kulungele ukuhlanganisa nokulungisa amaphutha kamuva.

(7) Ingabe uye waklama uhlaka noma izinhlaka zeNgxenye noma Imojula? Lokhu kulungele ukuhlanganisa nokulungisa amaphutha kamuva.

(8) Kuma-IC anamaphini amaningi futhi aminyene, ingabe umake amaphinikhodi angu-5X no-10X? Lokhu kusiza ekususeni iphutha kamuva.

(9) Ingabe ubukhulu bamamaki nezinhlaka ezihlukahlukene oziklamile bunengqondo? Uma kungenangqondo, ukuklanywa kwebhodi kungenza abantu bazizwe sengathi aliphelele.