1. Usayizi webhodi elingenalutho & ukuma
Into yokuqala okufanele uyicabangelePCBukwakheka kwesakhiwo ubukhulu, ukuma kanye nenani lezingqimba zebhodi elingenalutho.Ubukhulu bebhodi elingenalutho ngokuvamile bunqunywa ubukhulu bomkhiqizo wokugcina we-elekthronikhi, futhi ubukhulu bendawo bunquma ukuthi zonke izingxenye ze-elekthronikhi ezidingekayo zingabekwa yini.Uma ungenaso isikhala esanele, ungase ucabangele idizayini enezendlalelo eziningi noma ye-HDI.Ngakho-ke, kubalulekile ukulinganisa usayizi webhodi ngaphambi kokuqala umklamo.Okwesibili ukuma kwe-PCB.Ezimweni eziningi, awunxande, kodwa kukhona neminye imikhiqizo edinga ukusetshenziswa kwama-PCB anomumo ongavamile, nawo onomthelela omkhulu ekubekweni kwengxenye.Okokugcina inombolo yezendlalelo ze-PCB.Ngakolunye uhlangothi, i-PCB enezingqimba eziningi isivumela ukuthi senze imiklamo eyinkimbinkimbi futhi ilethe imisebenzi eyengeziwe, kodwa ukwengeza ungqimba olwengeziwe kuzonyusa izindleko zokukhiqiza, ngakho-ke kufanele kunqunywe ekuqaleni kokuklama.izendlalelo ezithile.
2. Inqubo yokukhiqiza
Inqubo yokukhiqiza esetshenziselwa ukukhiqiza i-PCB ingenye ukucatshangelwa okubalulekile.Izindlela zokukhiqiza ezihlukene ziletha izithiyo zokuklama ezihlukene, okuhlanganisa nezindlela zokuhlanganisa ze-PCB, okufanele nazo zicatshangelwe.Ubuchwepheshe bokuhlanganisa obuhlukile njenge-SMT ne-THT buzodinga ukuthi udizayine i-PCB yakho ngendlela ehlukile.Okubalulekile wukuqinisekisa nomkhiqizi ukuthi bayakwazi ukukhiqiza ama-PCB owadingayo nokuthi banamakhono nobungcweti obudingekayo ukuze usebenzise umklamo wakho.
3. Izinto kanye nezingxenye
Ngesikhathi senqubo yokuklama, izinto ezisetshenziswayo nokuthi izingxenye zisatholakala yini emakethe zidinga ukucatshangelwa.Ezinye izingxenye zinzima ukuzithola, zidla isikhathi futhi ziyabiza.Kunconywa ukusebenzisa ezinye zezingxenye ezisetshenziswa kakhulu ukuze kufakwe esikhundleni.Ngakho-ke, umklami we-PCB kufanele abe nolwazi olubanzi nolwazi lwemboni yomhlangano we-PCB yonke.I-Xiaobei inomklamo we-PCB ochwepheshe Ubuchwepheshe bethu bokukhetha izinto ezisetshenziswayo nezingxenye ezifanele kakhulu zamaphrojekthi wamakhasimende, nokuhlinzeka ngomklamo we-PCB othembeke kakhulu phakathi kwesabelomali sekhasimende.
4. Ukubekwa kwengxenye
Idizayini ye-PCB kufanele icabangele indlela izingxenye ezibekwe ngayo.Ukuhlela kahle izindawo zezingxenye kunganciphisa inani lezinyathelo zokuhlanganisa ezidingekayo, kukhuphule ukusebenza kahle nokunciphisa izindleko.I-oda lethu lokubeka elinconyiwe izixhumi, amasekhethi kagesi, amasekhethi anesivinini esikhulu, amasekhethi abalulekile, futhi ekugcineni izingxenye ezisele.Futhi, kufanele siqaphele ukuthi ukuchithwa kokushisa okukhulu okuvela ku-PCB kungehlisa ukusebenza kahle.Lapho udizayina isakhiwo se-PCB, cabanga ukuthi yiziphi izingxenye ezizokhipha ukushisa okukhulu, gcina izingxenye ezibalulekile kude nezingxenye zokushisa okuphezulu, bese ucabanga ukwengeza okosinki okushisa nokupholisa amafeni ukuze unciphise izinga lokushisa.Uma kunezinto eziningi zokushisisa, lezi zakhi zidinga ukusatshalaliswa ezindaweni ezihlukene futhi azikwazi ukugxila endaweni eyodwa.Ngakolunye uhlangothi, isiqondiso lapho izingxenye zibekwe khona nazo kufanele zicatshangelwe.Ngokuvamile, izingxenye ezifanayo zinconywa ukuba zibekwe ohlangothini olufanayo, okuzuzisa ukuthuthukisa ukusebenza kahle kwe-welding nokunciphisa amaphutha.Kumele kuqashelwe ukuthi ingxenye akufanele ibekwe ohlangothini lwe-solder ye-PCB, kodwa kufanele ibekwe ngemuva kwe-plated ngokusebenzisa ingxenye yembobo.
5. Izindiza zamandla neziphansi
Izindiza zamandla neziphansi kufanele zihlale zigcinwe ngaphakathi ebhodini, futhi kufanele zigxile futhi zilingane, okuyisiqondiso esiyisisekelo sokuklama kwesakhiwo se-PCB.Ngoba lo mklamo ungavimbela ibhodi ukuthi lingagobi futhi libangele izingxenye ukuthi ziphambuke endaweni yazo yasekuqaleni.Ukuhlelwa okunengqondo kwendawo yamandla nendawo yokulawula kunganciphisa ukuphazamiseka kwamandla kagesi aphezulu kusekethe.Kudingeka sihlukanise izindiza eziphansi zesiteji samandla ngasinye ngangokunokwenzeka, futhi uma kungenakugwema, okungenani siqiniseke ukuthi zisekupheleni kwendlela yamandla.
6. Ubuqotho Besiginali kanye Nezindaba ze-RF
Ikhwalithi yedizayini yesakhiwo se-PCB iphinde inqume ubuqotho besignali yebhodi lesekhethi, ukuthi izoba ngaphansi kokuphazanyiswa nguzibuthe kagesi nezinye izinkinga.Ukuze ugweme izinkinga zesignali, umklamo kufanele ugweme ukulandelana okuhambisanayo, ngoba ukulandelana okuhambisanayo kuzodala i-crosstalk eyengeziwe futhi kubangele izinkinga ezihlukahlukene.Futhi uma iminonjana idinga ukuphambana, kufanele iwele ngama-engeli angakwesokudla, okunganciphisa amandla kanye ne-inductance ehambisanayo phakathi kwemigqa.Futhi, uma izakhi ezinesizukulwane esiphezulu se-electromagnetic zingadingeki, kuyanconywa ukuthi kusetshenziswe izingxenye ze-semiconductor ezikhiqiza ukukhishwa kwe-electromagnetic okuphansi, okubuye kube nomthelela ekuboniseni ubuqotho.
Isikhathi sokuthumela: Mar-23-2023