Ekucubunguleni nasekukhiqizeni i-PCBA, kunezici eziningi ezithinta ikhwalithi yokushisela i-SMT, njenge-PCB, izingxenye ze-elekthronikhi, noma unamathisele we-solder, izinto zokusebenza nezinye izinkinga kunoma iyiphi indawo kuzothinta ikhwalithi ye-SMT welding, bese inqubo yokwelashwa kwendawo ye-PCB izoba nomthelela. kunamuphi umthelela kukhwalithi ye-SMT yokushisela?

Inqubo yokwelapha engaphezulu kwe-PCB ihlanganisa ikakhulukazi i-OSP, i-electric gold plating, i-spray tin/dip tin, igolide/isiliva, njll., ukukhetha okukhethekile okudinga ukunqunywa ngokwezidingo zangempela zomkhiqizo, ukwelashwa kwendawo ye-PCB kuyisinyathelo esibalulekile senqubo. enqubweni yokukhiqiza ye-PCB, ikakhulukazi ukukhulisa ukwethembeka kwe-welding kanye nendima yokulwa nokugqwala kanye ne-anti-oxidation, ngakho-ke, inqubo yokwelashwa kwe-PCB ebusweni futhi iyisici esiyinhloko esithinta ikhwalithi yokushisela!

Uma kunenkinga ngenqubo yokwelapha ebusweni be-PCB, kuzoqale kuholele ekutheni i-oxidation noma ukungcoliswa kokuhlangana kwe-solder, okuthinta ngokuqondile ukuthembeka kwe-welding, okuholela ekushiseni okungalungile, okulandelwa inqubo yokwelashwa kwe-PCB ebusweni kuzophinde kuthinte. izakhiwo zemishini yejoyinti ye-solder, njengokuqina kobuso kuphezulu kakhulu, kuzoholela kalula ekuweni kwejoyinti le-solder noma ukuqhekeka kwe-solder joint.