01
Kungani Puzzle
Ngemuva kweBhodi Yesekethe kuklanyelwe, umugqa womhlangano we-SMT Patch udinga ukunamathiselwa kwizakhi. Ifektri ngayinye yokucubungula i-SMT izocacisa usayizi ofaneleke kakhulu webhodi yesekethe ngokuya ngezidingo zokwenza umhlangano. Isibonelo, ubukhulu buncane kakhulu noma bukhulu kakhulu, futhi umugqa womhlangano uhleliwe. Ukulawulwa kwebhodi yesekethe akunakulungiswa. Ngakho-ke umbuzo uwukuthi, yini okufanele siyenze uma usayizi webhodi lethu lesekethe lincane kunosayizi ochazwe yifektri? Okungukuthi, kudingeka sihlanganise ibhodi yesekethe futhi sibeke amabhodi amaningi wesifunda esiqeshini esisodwa. Ukufakwa ngokweqile kungathuthukisa kakhulu ukusebenza kahle kwemishini yokubekwa eshesha kakhulu kanye nokuthengisa amagagasi.
02
Pakanya
Ngaphambi kokuchaza ukuthi usebenza kanjani ngokuningiliziwe ngezansi, qala uchaze amagama ambalwa asemqoka
Iphuzu leMark: Njengoba kukhonjisiwe kuMfanekiso 2.1,
Kusetshenziselwa ukusiza ukuma kwe-optical komshini wokubekwa. Kunamaphuzu okungenani amabili we-asymmetric amabili ku-diagonal yebhodi le-PCB ngedivayisi ye-patch. Amaphoyinti wereferensi wokuma kwe-PCB yonke ngokuvamile endaweni ehambisanayo kwi-diagonal yayo yonke i-PCB; Ukuma kwe-PCB ehlukaniswe yi-PCB I-Reference Point ngokuvamile endaweni ehambisanayo ku-diagonal ye-PCB engaphansi; Nge-QFP (Iphakethe le-Quad Flat) eline-Living Pitch ≤0.5mm kanye ne-BGA (I-Ball Grid Array Package) nge-Ball Pitch ≤0.8mm, ukuze uthuthukise ukunemba kokubekwa, kuyadingeka ukusetha iphuzu lereferensi kwamakhona amabili aphambene
Izidingo zeBenchmark:
a. Ukwakheka okukhethwayo kwephuzu lesethenjwa kuwumbuthano oqinile;
b. Usayizi wephuzu lesethenjwa ngu-1.0 + 0.05mm ubukhulu
c. Iphuzu lesethenjwa libekwe ngaphakathi kwebanga le-PCB elisebenzayo, futhi ibanga eliphakathi likhulu kune-6mm kusuka emaphethelweni eBhodi;
d. Ukuze kuqinisekiswe umphumela wokuqashelwa kokuphrinta nokugoqa, akufanele kube namanye amamaki wesikrini, ama-pads, ama-v-grooves, izimbobo zesitembu, izikhala ze-PCB ze-PCB kanye ne-wiring ngaphakathi kwe-2mm eduze komngcele we-fiducial Mark;
e. Isethenjwa Pad ne-Soler Mask zisethwe kahle.
Ukunaka umehluko phakathi kombala wezinto ezibonakalayo nemvelo, shiya indawo engathengisi 1 mm enkulu kune-Optical Positiong Reference Symbol, futhi akukhozinhlamvu ezivunyelwe. Akudingekile ukuthi aqambe indandatho yokuvikela insimbi ngaphandle kwendawo engathengisi.