Mu PCBA processing ndi kupanga, pali zinthu zambiri zomwe zimakhudza ubwino wa kuwotcherera kwa SMT, monga PCB, zipangizo zamagetsi, kapena solder phala, zipangizo ndi mavuto ena pamalo aliwonse zidzakhudza khalidwe la SMT kuwotcherera, ndiye PCB pamwamba mankhwala njira adzakhala. zili ndi zotsatira zotani pamtundu wa kuwotcherera kwa SMT?

PCB pamwamba mankhwala ndondomeko makamaka zikuphatikizapo OSP, golide plating magetsi, utsi malata / kuviika malata, golide / siliva, ndi zina zotero, kusankha yeniyeni imene ndondomeko ayenera kutsimikizika malinga ndi zofunika mankhwala, PCB pamwamba mankhwala ndi sitepe yofunika. mu PCB kupanga ndondomeko, makamaka kuonjezera kuwotcherera kudalirika ndi odana ndi dzimbiri ndi odana ndi makutidwe ndi okosijeni udindo, kotero, PCB pamwamba mankhwala ndondomeko ndi chinthu chachikulu zimakhudza khalidwe kuwotcherera!

Ngati pali vuto ndi ndondomeko ya mankhwala a PCB pamwamba, ndiye kuti choyamba chimayambitsa makutidwe ndi okosijeni kapena kuipitsidwa kwa olowa, zomwe zimakhudza mwachindunji kudalirika kwa kuwotcherera, zomwe zimapangitsa kuti zikhale zovuta kuwotcherera, zotsatiridwa ndi ndondomeko ya mankhwala a PCB. The makina katundu wa solder olowa, monga pamwamba kuuma ndi apamwamba kwambiri, izo mosavuta kuchititsa kuti olowa solder kugwa kapena solder olowa akulimbana.