Kunyatso uye kwakaringana kuisirwa kwepamusoro-akaunganidzwa zvikamu kune yakagadziriswa chinzvimbo chePCB ndicho chinangwa chikuru cheSMT chigamba kugadzirisa. Zvisinei, mukugadzirisa, pachava nemamwe matambudziko, ayo achakanganisa kunaka kwechigamba, pakati pacho chinonyanya kuwanda ndiro dambudziko rechikamu chekufambisa.
Zvikonzero zvakasiyana-siyana zvekuchinja kwepakiti zvakasiyana kubva kune zvinowanzoitika
(1) The reflow welding furnace wind speed yakakura kwazvo (kunyanya inoitika paBTU choto, zviduku uye zvakakwirira zvikamu zviri nyore kuchinja).
(2) Vibration yechitima chekufambisa njanji, uye kufambisa chiito chemukombi (zvinorema zvikamu)
(3) Iyo padhi dhizaini ndeye asymmetrical.
(4) Huru-hukuru padhi kusimudza (SOT143).
(5) Zvikamu zvine mapini mashoma uye mahombe span zviri nyore kudhonzwa nedivi ne solder pamusoro tension. Kushivirira kwezvinhu zvakadaro, seSIM makadhi, mapedhi kana simbi mesh Windows inofanira kunge iri pasi pepini yehupamhi hwechikamu pamwe ne0.3mm.
(6) Zviyero zvemigumo miviri yezvikamu zvakasiyana.
(7) Simba risina kuenzana pazvikamu, zvakadai sepakeji anti-wetting thrust, gomba rekuisa kana kadhi yekuisa slot.
(8) Pedyo nezvikamu zvinowanzoita exhaust, senge tantalum capacitors.
(9) Kazhinji, solder paste ine basa rakasimba haisi nyore kuchinja.
(10) Chero chinhu chinogona kukonzera kadhi rakamira richakonzera kutamiswa.
Nezvikonzero chaizvo:
Nekuda kwe reflow welding, chikamu chinoratidza mamiriro ekuyangarara. Kana kumira kwakarurama kuchidikanwa, basa rinotevera rinofanira kuitwa:
(1) Iyo solder paste kudhinda kunofanirwa kuve kwakaringana uye saizi yesimbi mesh hwindo haifanirwe kunge inopfuura 0.1mm yakafara kupfuura pini yechikamu.
(2) Gadzira zvine musoro padhi uye chinzvimbo chekuisa kuitira kuti zvikamu zvigone kurongeka otomatiki.
(3) Paunenge uchigadzira, mukaha uripo pakati pezvikamu zvekuumbwa uye unofanirwa kukwidziridzwa zvakakodzera.
Nguva yekutumira: Mar-08-2024
