01
Yog vim li cas puzzle
Tom qab lub rooj tsav xwm Circuit Court tsim, SMT thaj sib dhos kab yuav tsum tau txuas nrog cov khoom.Txhua lub tuam txhab ua haujlwm SMT yuav qhia qhov tsim nyog tshaj plaws ntawm lub rooj tsav xwm Circuit Court raws li kev ua haujlwm ntawm cov kab sib dhos.Piv txwv li, qhov loj me me dhau los yog loj dhau, thiab cov kab sib dhos yog tsau.Cov cuab yeej ntawm lub rooj tsav xwm Circuit Court tsis tuaj yeem kho.Yog li cov lus nug yog, peb yuav ua li cas yog tias qhov luaj li cas ntawm peb lub rooj tsav xwm Circuit Court nws tus kheej yog me dua qhov loj ntawm lub Hoobkas?Ntawd yog, peb yuav tsum tau sib sau ua ke lub rooj tsav xwm hauv Circuit Court thiab muab ntau lub rooj sib tham hauv ib thooj.Kev tso cai tuaj yeem txhim kho kev ua tau zoo rau ob qho tib si high-speed qhov chaw tso tshuab thiab yoj soldering.
02
Glossary
Ua ntej piav qhia yuav ua li cas khiav lag luam hauv kev nthuav dav hauv qab no, ua ntej piav ob peb nqe lus tseem ceeb
Kos taw tes: raws li qhia hauv daim duab 2.1,
Nws yog siv los pab kho qhov muag qhov chaw ntawm lub tshuab tso.Muaj tsawg kawg yog ob lub ntsiab lus asymmetric ntawm kab pheeb ces kaum ntawm PCB pawg thawj coj saib nrog cov khoom siv thaj.Cov ntsiab lus siv rau qhov chaw kho qhov muag ntawm tag nrho PCB feem ntau yog nyob ntawm txoj haujlwm sib thooj ntawm kab pheeb ces kaum ntawm tag nrho PCB;qhov chaw kho qhov muag ntawm qhov sib faib PCB Cov ntsiab lus siv feem ntau yog nyob ntawm txoj haujlwm sib thooj ntawm kab pheeb ces kaum ntawm sub-block PCB;rau QFP (quad tiaj pob) nrog cov hlau lead pitch ≤0.5mm thiab BGA (pob daim phiaj array pob) nrog pob pitch ≤0.8mm, txhawm rau txhim kho qhov tseeb ntawm kev tso kawm, nws yuav tsum tau teeb tsa qhov taw qhia ntawm ob qhov sib txawv ntawm qhov chaw. lub IC
Benchmark xav tau:
ib.Cov duab nyiam ntawm qhov taw tes siv yog lub voj voog ruaj khov;
b.Qhov loj ntawm qhov taw qhia siv yog 1.0 + 0.05mm inch
c.Cov ntsiab lus siv tau muab tso rau hauv qhov zoo ntawm PCB, thiab qhov chaw nruab nrab yog ntau dua 6 hli ntawm ntug ntawm lub rooj tsavxwm;
d.Txhawm rau kom paub meej cov txiaj ntsig ntawm kev luam ntawv thiab patching, yuav tsum tsis txhob muaj lwm yam silk-screen marks, pads, V-grooves, stamp qhov, PCB board qhov khoob thiab xaim nyob rau hauv 2 hli ze ntawm ntug ntawm lub cim fiducial;
e.Cov ntaub ntawv siv thiab daim npog ntsej muag raug teeb tsa kom raug.
Muab rau hauv tus account qhov sib piv ntawm cov xim ntawm cov khoom thiab ib puag ncig, tawm hauv ib cheeb tsam uas tsis yog-soldering 1 mm loj tshaj qhov pom ntawm qhov chaw siv lub cim, thiab tsis muaj cov cim raug tso cai.Nws tsis tas yuav tsim lub nplhaib tiv thaiv hlau sab nraum qhov chaw uas tsis yog soldering.