1. PCB palibe ndondomeko m'mphepete, ndondomeko mabowo, sangathe kukumana ndi zipangizo SMT clamping zofunika, kutanthauza kuti sangathe kukwaniritsa zofunika kupanga misa.
2. PCB mawonekedwe mlendo kapena kukula lalikulu kwambiri, laling'ono kwambiri, yemweyo sangathe kukwaniritsa zofunika zida clamping.
3. PCB, FQFP ziyango kuzungulira palibe kuwala malo chizindikiro (Marko) kapena Mark mfundo si muyezo, monga Mark mfundo padziko solder kukana filimu, kapena lalikulu kwambiri, laling'ono kwambiri, chifukwa Mark mfundo chithunzi kusiyana ndi yaing'ono kwambiri, makina pafupipafupi Alamu sangathe kugwira ntchito bwino.
4. Kukula kwa kapangidwe ka pedi sikuli kolondola, monga kutalika kwa pad kwa zigawo za chip ndi zazikulu kwambiri, zazing'ono kwambiri, padyo sikhala yofananira, zomwe zimapangitsa kuti pakhale zolakwika zingapo pambuyo pakuwotcherera kwa zida za chip, monga chopindika, chipilala choyimirira. .
5. Mapadi okhala ndi bowo kwambiri amapangitsa kuti solder isungunuke kudzera mu dzenje mpaka pansi, zomwe zimapangitsa kuti solder ikhale yochepa kwambiri.
6. Chip components pedi kukula si symmetrical, makamaka ndi mzere wamtunda, pa mzere wa gawo la ntchito ngati pad, kotero kutireflow uvunisoldering Chip zigawo zikuluzikulu pa malekezero onse a pedi kutentha m'malo, solder phala wasungunuka ndi chifukwa cha kupunduka chipilala.
7. IC pad kapangidwe si kolondola, FQFP mu PAD ndi lalikulu kwambiri, kuchititsa mlatho pambuyo kuwotcherera ngakhale, kapena PAD pambuyo m'mphepete ndi lalifupi kwambiri chifukwa cha kusakwanira mphamvu pambuyo kuwotcherera.
8. IC pads pakati pa mawaya interconnecting anaika pakati, osati yabwino SMA pambuyo soldering anayendera.
9. Makina opangira ma wave solderingIC palibe mapepala othandizira kupanga, zomwe zimapangitsa kuti pakhale mlatho pambuyo pogulitsa.
10. PCB makulidwe kapena PCB mu kugawa IC si wololera, ndi mapindikidwe PCB pambuyo kuwotcherera.
11. Mapangidwe a mfundo zoyeserera sakhala okhazikika, kotero kuti ICT sigwira ntchito.
12. Kusiyana pakati pa ma SMD sikuli kolondola, ndipo zovuta zimabuka pakukonzanso mtsogolo.
13. The solder kukana wosanjikiza ndi makhalidwe mapu si standardized, ndi solder kukana wosanjikiza ndi khalidwe mapu kugwa pa ziyangoyango kuchititsa soldering zabodza kapena kuchotsedwa magetsi.
14. mapangidwe osamveka a splicing board, monga kusakonza bwino kwa V-slots, zomwe zimapangitsa kuti PCB iwonongeke pambuyo poyambiranso.
Zolakwa zomwe zili pamwambazi zitha kuchitika mu chimodzi kapena zingapo mwazinthu zomwe sizinapangidwe bwino, zomwe zimapangitsa kuti pakhale kusintha kosiyanasiyana pamtundu wa soldering.Okonza sadziwa mokwanira za ndondomeko ya SMT, makamaka zigawo za reflow soldering zili ndi ndondomeko "yamphamvu" samamvetsetsa ndi chimodzi mwa zifukwa za mapangidwe oipa.Kuphatikiza apo, mapangidwewo sananyalanyaze ndondomekoyi ogwira nawo ntchito kuti achite nawo kusowa kwa mapangidwe abizinesi akupanga kupanga, ndiyenso chifukwa cha mapangidwe oyipa.
Nthawi yotumiza: Jan-20-2022