Umklamo we PCB ibhodi kaningi iba nezinkinga ezinjengalezi nokuthi? Namuhla ngithanda inethiwekhi yohlelo xiaobian incoma ukuthi le ndatshana ibandakanyeke ekwakhiweni kwebhodi le-PCB iminyaka eminingi yonjiniyela, isipiliyoni sokudizayina sebhodi lesifunda esabiwe ukuze sabelane nawe. Uyemukelwa ukuqoqa!

Ngemikhiqizo ye-elekthronikhi, ukwakheka kwebhodi le-PCB kuyinqubo edingekayo yokuklama kusuka kumdwebo wesikimu kagesi kumkhiqizo othize, futhi ukuba nengqondo komklamo wayo kuhlobene kakhulu nokukhiqizwa komkhiqizo nekhwalithi yomkhiqizo. Kodwa-ke, kubantu abaningi abasanda kuhlanganyela ekwakhiweni kwe-elekthronikhi, abanolwazi oluncane kulokhu. Yize befunde isoftware ye-PCB board design, Kepha ukwakheka kwe-PCB kaningi kunezinkinga ezithile. Unjiniyela onconywe nguXiaobian ubesebenze ekwakhiweni kwebhodi le-PCB iminyaka eminingi. Uzokwabelana nawe ngesipiliyoni sakhe ku-PRINTED circuit board design nawe, enethemba lokudlala indima yokwenza isitini ukuheha i-jade. Isoftware ye-PCB design enconywe ngunjiniyela kwakuyi-TANGO eminyakeni embalwa edlule, futhi manje isebenzisa iPOTOTEL2.7 YAMAWINDI.

Ukuhlelwa kwe-PCB

Ukuhleleka okujwayelekile kokubekwa kwezinto ku-PCB:

1, beka izinto ngesimo esimisiwe eduze nesakhiwo, njengesokhethi yamandla, ilambu yesikhombi, iswishi, isixhumi, njll., Lezi zinto zifakwa ngemuva komsebenzi we-LOCK wesoftware ukuyikhiya, ukuze ingabi ihanjiswe ngephutha;

2, izingxenye ezikhethekile nezakhi ezinkulu ezibekwe kulayini, njengezinto zokushisa, ama-transformer, i-IC, njll .;

3. Beka amadivayisi amancane.

Ibanga phakathi kwengxenye nonqenqema lwe-PCB

Uma kunokwenzeka, zonke izingxenye kufanele zibekwe ngaphakathi kwe-3mm kusuka onqenqemeni lwebhodi le-PCB noma okungenani ngaphezulu kokukhulu kwebhodi le-PCB. Lokhu kungenxa yokuthi ekukhiqizweni kwenqwaba yama-plug-ins womugqa womhlangano ne-wave soldering, kufanele inikezwe indawo yokukhomba ukuze isetshenziswe. Ngasikhathi sinye, ukuvimbela amaphutha onqenqemeni abangelwa ukucubungula ukuma, uma kunezinto eziningi kakhulu ebhodini le-PCB, Uma kufanele weqe uhla lwe-3mm, ungangeza onqenqemeni olusizayo lwe-3mm onqenqemeni lwebhodi le-PCB, bese uvula isikejana esimise okwe-V onqenqemeni olusizayo, olungaphulwa ngesandla ngesikhathi sokukhiqiza.

Ukuhlukaniswa phakathi kwengcindezi ephezulu naphansi

Kukhona amasekethe wevolthi ephezulu kanye ne-low voltage wesifunda ngasikhathi sinye kumabhodi amaningi we-PCB, izingxenye zesekethe elinamandla amakhulu kanye nengxenye yamandla wevolthi ephansi kufanele ihlukaniswe futhi ivuleke, futhi ibanga lokuzihlukanisa lihlobene ne-voltage yokumelana. Imvamisa, ibhodi le-PCB kufanele libe yi-2mm kude ne-voltage yokumelana ngo-2000kV, futhi inani elingaphezulu kwalokhu kufanele lenyuswe, ngokwesibonelo, uma ukuhlolwa kwamandla kagesi kungu-3000V, Ibanga phakathi kwezintambo eziphakeme neziphansi zamandla kagesi kufanele libe ngaphezu kuka-3.5mm, ezimeni eziningi ukugwema ukungena, kepha futhi ebhodini le-PCB phakathi kwesikhala esiphakeme nesiphansi sevolthi.

I-PCB board cabling

Ukuhlelwa kwabaqhubi abaphrintiwe kufanele kube kufushane ngangokunokwenzeka, ikakhulukazi kumasekethe amaza aphezulu; Ukuphenduka kocingo oluphrintiwe kufanele kube luyindilinga, futhi i-Angle efanele noma i-Angle ebukhali izothinta ukusebenza kukagesi esimweni sokujikeleza kwemvamisa ephezulu nokuxinana kwezintambo; Lapho kuxhunywa amapaneli amabili, izintambo ezinhlangothini zombili kufanele zibe nge-perpendicular, oblique, noma zigobile ukugwema ukufana komunye nomunye ukunciphisa ukuhlangana kwe-parasitic. Izintambo eziphrintiwe ezisetshenziswa njengokufaka kanye nokukhishwa kwesifunda kufanele kugwenywe ngokufana komunye nomunye ngangokunokwenzeka ukugwema impendulo. Kungcono ukufaka izintambo zokubhoboza phakathi kwalezi zingcingo.

Ububanzi wire ephrintiwe

Ububanzi bocingo kufanele buhlangabezane nezidingo zokusebenza kukagesi futhi kube lula ukukhiqizwa. Inani layo eliphansi lincike kusayizi wamanje, kepha ubuncane akufanele bube ngaphansi kuka-0.2mm. Ngobuningi obuphakeme, imigqa ecacile ephrintiwe, ububanzi bocingo nezikhala kuvame ukufiseleka ngo-0.3mm; Ukukhuphuka kokushisa kobubanzi bezintambo kufanele kubhekwe esimweni samanje esiphakeme. Ukuhlolwa kwephaneli elilodwa kukhombisa ukuthi lapho ukushuba kocwecwe lwethusi kungu-50μm, ububanzi bocingo luyi-1 ~ 1.5mm kanti olwamanje luyi-2A, ukukhuphuka kwezinga lokushisa kuncane kakhulu. Ngakho-ke, ucingo olunobubanzi obungu-1 ~ 1.5mm lungahlangabezana nezidingo zomklamo ngaphandle kokubanga ukukhuphuka kwezinga lokushisa.

Izintambo zomhlabathi ezijwayelekile zabaqhubi abaphrintiwe kufanele zibe zimbi ngangokunokwenzeka, kusetshenziswa imigqa emikhulu kuno-2 kuye ku-3mm uma kungenzeka, ikakhulukazi kumasekethe ane-microprocessors. Ngoba ulayini wendawo ulunge kakhulu, ngenxa yokushintsha kokugeleza kwamanje, izinguquko ezingaba khona emhlabathini, ukungazinzi kwezinga lesiginali yesikhawu sesikhawuli, kuzokwenza ukuwohloka komsindo kubangelwe; Imigomo ye-10-10 ne-12-12 ingasetshenziswa lapho kuxhunywa izintambo phakathi kwezikhonkwane ze-DIP ezipakishwe i-IC, okungukuthi, lapho izintambo ezimbili zidluliswa phakathi kwezikhonkwane, ububanzi bephedi bungasethelwa ku-50mil, ububanzi bomugqa nokuhlukaniswa komugqa kungu-10mil, lapho kudluliswa ucingo olulodwa kuphela phakathi kwezikhonkwane, ububanzi bephedi bungasethelwa ku-64mil, ububanzi bomugqa nokuhlukaniswa kwemigqa kuyi-12mil.

Isikhala sezintambo eziphrintiwe

Isikhala phakathi kwezintambo eziseduze kufanele sihlangabezane nezidingo zokuphepha kukagesi, futhi ukuze kube lula ukusebenza nokukhiqiza, isikhala masibe banzi ngangokunokwenzeka. Isikhala esincane kufanele okungenani silungele ukuthi amandla kagesi akwazi ukusimama. Le voltage ngokuvamile ifaka amandla okusebenza, i-voltage eyengeziwe yokuguquguquka kanye namandla aphezulu abangelwa ezinye izizathu.

Uma izimo zobuchwepheshe zivumela ibanga elithile lensali yensimbi phakathi kwezintambo, isikhala sizoncishiswa. Ngakho-ke umklami kufanele acabangele lesi sici lapho ecubungula amandla kagesi. Lapho ukuminyana kwentambo kungaphansi, isikhala somugqa wesiginali singakhuphuka ngokufanele, ulayini wesiginali ngokungafani okukhulu kwezinga eliphakeme, eliphansi kufanele libe mfushane ngangokunokwenzeka futhi kwandiswe isikhala.

Ukuvikela nokubeka phansi izintambo eziphrintiwe

Intambo yomphakathi yomphakathi yocingo ephrintiwe kufanele ihlelwe emaphethelweni ebhodi lesifunda eliphrintiwe ngangokunokwenzeka. Ucwecwe lwethusi oluningi ngangokunokwenzeka kufanele lubekelwe njengocingo lomhlabathi ebhodini le-PCB, ukuze umphumela wokuvikela ungcono kunocingo olude lomhlabathi, izici zomugqa wokudlulisa nomphumela wokuvikela uzothuthukiswa, futhi futhi udlale indima ekwehliseni amandla okusatshalaliswa. Intambo yomphakathi yocingo ephrintiwe ingcono ukwakha iluphu noma inethiwekhi, ngoba lapho kunama-circuits amaningi ahlanganisiwe ebhodini elilodwa, ikakhulukazi uma kunezinto ezidla amandla amaningi, umkhawulo kugrafu uveza umehluko ongaba khona wokubeka phansi, lapho kubangela ukwehliswa kokubekezelelana komsindo, lapho kuba yindilinga, umehluko wamandla wokubeka phansi uyancipha.

Ngaphezu kwalokho, umdwebo womhlaba namandla kufanele uhambisane nesiqondiso sokugeleza kwedatha ngangokunokwenzeka, okuyimfihlo yamandla wokunciphisa umsindo; I-Multilayer PCB board ingathatha izingqimba eziningana njengolwelwesi oluvikelayo, ungqimba lokuphakelwa kwamandla, ungqimba lomhlabathi kungathathwa njengolwelwesi oluvikelayo, ungqimba jikelele womhlabathi namandla wesendlalelo aklanywe kungqimba lwangaphakathi lwebhodi le-multilayer PCB, umugqa wesiginali wedizayini yangaphakathi nongqimba lwangaphandle.