Titha kuwona kutetezedwa pa PCBS ambiri, makamaka pamagetsi ogula monga mafoni am'manja. PCB ya foniyo ili ndi zishango.
Zophimba zotchingira zimapezeka makamaka mu PCBS ya foni yam'manja, makamaka chifukwa mafoni am'manja amakhala ndi njira zosiyanasiyana zoyankhulirana opanda zingwe, monga GPS, BT, WiFi, 2G/3G/4G/5G, ndi mabwalo ena ovuta kwambiri a analogi ndi DC-DC switching power circuits. nthawi zambiri zimafunika kuzipatula ndi zotchingira zotchinga. Kumbali ina, sizikhudza madera ena, ndipo kumbali ina, zimalepheretsa maulendo ena kuti adzikhudze okha.
Ichi ndi chimodzi mwa ntchito zoteteza ku kusokoneza ma electromagnetic; Ntchito ina ya chishango ndikuletsa kugunda. PCB SMT idzagawidwa m'magulu angapo. Nthawi zambiri, mbale zoyandikana zimafunika kupatulidwa kuti ziteteze kugundana pafupi ndi kuyesa kotsatira kapena zoyendera zina.
Zida zopangira chishango nthawi zambiri zimakhala zamkuwa zoyera, zitsulo zosapanga dzimbiri, tinplate, ndi zina. Pakalipano, zishango zambiri zimagwiritsidwa ntchito mkuwa woyera.
Mkuwa woyera umadziwika ndi kuchepa pang'ono kwa chitetezo, chofewa, chokwera mtengo kuposa zitsulo zosapanga dzimbiri, zosavuta kupanga malata; Chitsulo chosapanga dzimbiri chotchinga mphamvu ndi chabwino, mphamvu yayikulu, mtengo wokhazikika; Komabe, ndizovuta kupaka malata (sizingakhale malata popanda mankhwala opangidwa ndi pamwamba, ndipo zimakonzedwanso pambuyo poti nickel plating, komabe sizikugwirizana ndi chigambacho); Mphamvu yotchinga ya tinplate ndiyoyipa kwambiri, koma malata ndi abwino ndipo mtengo wake ndi wotchipa.
Chishangochi chikhoza kugawidwa kukhala chokhazikika komanso chosasunthika.
Chivundikiro Chotchinga Chimodzi Chokhazikika nthawi zambiri chimatchedwa single-piece, mwachindunji SMT yolumikizidwa ku PCB, Chingerezi chomwe chimatchedwa Shielding Frame.
Chishango chodzitchinjiriza chazigawo ziwiri chimatchedwanso chishango chazigawo ziwiri, ndipo chishango chazigawo ziwiri chikhoza kutsegulidwa mwachindunji popanda kuthandizidwa ndi zida zamoto. Mtengo ndi wokwera mtengo kuposa chidutswa chimodzi, SMT imawotchedwa pa PCB, yotchedwa Shielding Frame, yomwe ili pamwambayi imatchedwa Shielding Cover, molunjika pa Shielding Frame, yosavuta kusokoneza, kawirikawiri Frame yotsatirayi imatchedwa shielding frame, pamwambapa. Chivundikirocho chimatchedwa shielding cover. Chimango tikulimbikitsidwa kugwiritsa ntchito mkuwa woyera, malata ndi abwino; Chivundikirocho chikhoza kupangidwa ndi tinplate, makamaka zotchipa. Zigawo ziwiri zingagwiritsidwe ntchito kumayambiriro kwa polojekitiyi kuti zithandize kuthetsa vutoli, kuyembekezera kukhazikika kwa hardware, ndiyeno ganizirani kugwiritsa ntchito chidutswa chimodzi kuti muchepetse ndalama.
Nthawi yotumiza: Mar-13-2024
