1. Akumbutseni aliyense kuti ayang'ane maonekedwe poyamba atatenga bolodi la PCB kuti awone ngati pali dera lalifupi, kupuma kwa dera ndi mavuto ena.Kenako dziwani chithunzithunzi chachitukuko cha bolodi, ndikufanizirani chithunzi chojambulacho ndi chosanjikiza chosindikizira cha PCB kuti mupewe kusiyana pakati pa chithunzi chojambula ndi PCB.
2. Pambuyo zipangizo zofunika kwareflow uvunizakonzeka, zigawozo ziyenera kugawidwa.Zigawo zonse zikhoza kugawidwa m'magulu angapo malinga ndi makulidwe awo kuti zikhale zosavuta kuwotcherera wotsatira.Mndandanda wazinthu zonse uyenera kusindikizidwa.Pakuwotcherera, ngati palibe kuwotcherera kwatha, chotsani njira zomwezo ndi cholembera, kuti muthandizire ntchito yowotcherera.
3. Kalemakina opangira zitsulo, tengani njira za esd, monga kuvala mphete ya esd, kuti muteteze kuwonongeka kwa electrostatic kuzinthu zina.Zida zonse zowotcherera zikakonzeka, onetsetsani kuti mutu wachitsulo cha soldering ndi woyera komanso waudongo.Ndi bwino kusankha lathyathyathya Angle soldering chitsulo kwa kuwotcherera koyamba.Pamene kuwotcherera encapsulated zigawo zikuluzikulu monga mtundu 0603, chitsulo soldering bwino kukhudzana ndi kuwotcherera PAD, amene ndi yabwino kuwotcherera.Inde, kwa mbuye, ili si vuto.
4. Posankha zigawo zowotcherera, ziwotchererani mwadongosolo kuchokera kumunsi kupita kumtunda komanso kuchokera ku zazing'ono mpaka zazikulu.Pofuna kupewa kuwotcherera vuto la welded zikuluzikulu zigawo zikuluzikulu kuti zigawo zing'onozing'ono.Makamaka weld Integrated circuit chips.
5. Musanayambe kuwotcherera tchipisi tating'onoting'ono, onetsetsani kuti tchipisi tayikidwa m'njira yoyenera.Kwa chip screen yosindikiza wosanjikiza, general rectangular PAD imayimira chiyambi cha pini.Pa kuwotcherera, pini imodzi ya chip iyenera kukhazikitsidwa poyamba.Pambuyo pokonza bwino malo a zigawozo, zikhomo za diagonal za chip ziyenera kukhazikitsidwa kuti zigawozo zigwirizane bwino ndi malo asanawotchere.
6. Palibe ma elekitirodi abwino kapena oyipa mu ceramic chip capacitors ndi ma diode owongolera mumayendedwe owongolera ma voltage, koma ndikofunikira kusiyanitsa ma elekitirodi abwino ndi oyipa a ma LED, tantalum capacitors ndi electrolytic capacitors.Kwa ma capacitor ndi zida za diode, malekezero olembedwa nthawi zambiri amakhala oipa.Mu phukusi la SMT LED, pali njira yabwino - yolakwika motsatira njira ya nyali.Pazigawo zopindika zokhala ndi chizindikiritso cha silika cha diode dera, ma diode oyipa amayenera kuyikidwa kumapeto kwa mzere woyima.
7. Kwa kristalo oscillator, kungokhala krustalo oscillator zambiri mapini awiri okha, ndipo palibe mfundo zabwino ndi zoipa.The active crystal oscillator nthawi zambiri imakhala ndi mapini anayi.Samalani tanthauzo la pini iliyonse kuti mupewe zolakwika zowotcherera.
8. Pakuti kuwotcherera zigawo zikuluzikulu pulagi-mu, monga mphamvu gawo zigawo zikuluzikulu, pini ya chipangizo akhoza kusinthidwa pamaso kuwotcherera.Pambuyo pazigawozo zimayikidwa ndikukhazikika, solder imasungunuka ndi chitsulo chosungunuka kumbuyo ndikuphatikizidwa kutsogolo ndi solder pad.Osayika solder kwambiri, koma choyamba zigawozo ziyenera kukhala zokhazikika.
9. PCB kapangidwe mavuto opezeka pa kuwotcherera ayenera kulembedwa mu nthawi, monga unsembe kusokoneza, olakwika PAD kukula kamangidwe, chigawo ma CD zolakwika, etc., kwa wotsatira kusintha.
10. mutatha kuwotcherera, gwiritsani ntchito galasi lokulitsa kuti muwone ngati pali vuto lililonse la weld kapena dera lalifupi.
11. Akamaliza ntchito kuwotcherera bolodi dera, mowa ndi wothandizila kuyeretsa ayenera kugwiritsidwa ntchito kuyeretsa pamwamba pa bolodi dera, kuteteza dera bolodi pamwamba Ufumuyo chitsulo Chip yochepa dera, komanso akhoza kupanga bolodi dera. zoyera ndi zokongola kwambiri.
Nthawi yotumiza: Aug-17-2021