1. Ukuhlanganiswa kwendawo ekhethwayo kanye nezingxenye zokugoqa
Izingxenye zokuhlanganisa ezingaphezulu kanye nezingxenye ze-crimping, ezinobuchwepheshe obuhle.
Ngokuthuthukiswa kobuchwepheshe bokupakisha bengxenye, izingxenye eziningi zingathengwa ngezigaba zephakheji ye-reflow welding, okuhlanganisa izingxenye ze-plug-in ezingasebenzisa nge-hole reflow welding.Uma umklamo ungafinyelela umhlangano ogcwele wendawo, uzothuthukisa kakhulu ukusebenza kahle kanye nekhwalithi yokuhlanganisa.
Izingxenye zokunyathela ziyizixhumi zamaphini amaningi.Lolu hlobo lokupakisha luphinde lube nokwenza okuhle nokuthembeka kokuxhumana, okubuye kube yisigaba esithandwayo.
2. Ukuthatha indawo yomhlangano ye-PCBA njengento, isikali sokupakisha kanye nesikhala sephini kubhekwa njengento yonke.
Isikali sokupakisha kanye nesikhala samaphini yizici ezibaluleke kakhulu ezithinta inqubo yebhodi lonke.Esimweni sokukhetha izingxenye zokuhlanganisa ezingaphezulu, iqembu lamaphakheji anezici zobuchwepheshe ezifanayo noma afanele ukunamathiselwa kwensimbi yensimbi enogqinsi oluthile kufanele kukhethelwe i-PCB enosayizi othize kanye nokuminyana komhlangano.Isibonelo, ibhodi lefoni ephathekayo, iphakheji ekhethiwe ifanele ukuphrinta ukunamathisela kwe-welding nge-0.1mm yensimbi yensimbi ewugqinsi.
3. Fushanisa indlela yenqubo
Lapho indlela yenqubo imfushane, iphakamisa ukusebenza kahle kokukhiqiza kanye nekhwalithi ethembeke kakhulu.Idizayini yendlela yenqubo efanele yile:
I-single-side reflow welding;
I-reflow welding ephindwe kabili;
I-Double side reflow welding + i-wave welding;
I-Double side reflow welding + i-wave soldering ekhethiwe;
I-Double side reflow welding + i-welding manual.
4. Lungiselela ukwakheka kwengxenye
Idizayini yesakhiwo se-Principle Component ibhekisela ikakhulukazi emugqeni wesakhiwo sengxenye kanye nomklamo wesikhala.Ukuhlelwa kwezingxenye kufanele kuhlangabezane nezidingo zenqubo yokushisela.Isakhiwo esingokwesayensi nesiphusile singanciphisa ukusetshenziswa kwamajoyinti amabi e-solder kanye namathuluzi, futhi kuthuthukise ukwakheka kwensimbi enezikhala.
5. Cabanga ngomklamo we-solder pad, ukumelana ne-solder kanye nefasitela lensimbi yensimbi
Idizayini ye-solder pad, ukumelana ne-solder kanye nefasitela lensimbi ye-mesh inquma ukusatshalaliswa kwangempela kwe-solder paste kanye nenqubo yokwakheka kwe-solder joint.Ukuxhumanisa ukwakheka kwephedi lokushisela, ukumelana nokushisela kanye nensimbi yensimbi kudlala indima ebaluleke kakhulu ekuthuthukiseni izinga lokushisela.
6. Gxila emaphaketheni amasha
Okubizwa ngokuthi ukupakisha okusha, akubhekiseli ngokuphelele emaphaketheni emakethe entsha, kodwa kubhekiselwa enkampanini yabo ayinalo ulwazi lokusebenzisa lawo maphakheji.Ukuze kungeniswe amaphakheji amasha, ukuqinisekiswa kwenqubo yenqwaba encane kufanele kwenziwe.Abanye bangasebenzisa, akusho ukuthi ungasebenzisa futhi, ukusetshenziswa kwesisekelo kumele kwenziwe izivivinyo, uqonde izici zenqubo kanye ne-spectrum yenkinga, ubambe izinyathelo zokuphikisa.
7. Gxila ku-BGA, i-chip capacitor ne-crystal oscillator
I-BGA, ama-chip capacitor nama-crystal oscillator ayizici ezivamile ezizwela ukucindezeleka, okufanele zigwenywe ngokusemandleni ekuguquguqukeni kokugoqa kwe-PCB ekushiseleni, ekuhlanganiseni, ekungeneni kwe-workshop, ezokuthutha, ukusetshenziswa nezinye izixhumanisi.
8. Funda amacala ukuze uthuthukise imithetho yokuklama
Imithetho yokuklama ukukhiqiza isuselwa kumkhuba wokukhiqiza.Kubaluleke kakhulu ukuqhubeka nokuthuthukisa nokuphelelisa imithetho yedizayini ngokuya ngokuqhubekayo kokuhlangana okungekuhle noma izimo zokwehluleka ukuthuthukisa idizayini yokwenziwa.
Isikhathi sokuthumela: Dec-01-2020