01
Vim li cas teb nyuaj
Tom qab cov Circuit Court board yog tsim, lub smt thaj ua ke kab yuav tsum tau txuas nrog cov khoom siv. Txhua tus smt ua lub Hoobkas yuav qhia cov feem ntau qhov tseem ceeb tshaj plaws ntawm cov Circuit Coffic Board raws li kev ua haujlwm ntawm cov kab sib dhos. Piv txwv li, qhov loj me yog qhov loj me lossis loj heev, thiab cov kab ke sib dhos yog tsau. Kev pleev cov khoom ntawm cov Circuit Court Board tsis tuaj yeem kho tau. Yog li cov lus nug yog, peb yuav ua li cas yog tias qhov loj me ntawm peb tus kheej yog me dua li qhov loj me los ntawm lub Hoobkas? Ntawd yog, peb yuav tsum sib sau ua ke rau cov Circuit Court Board thiab muab ntau lub pob zeb hauv hluav taws xob rau hauv ib thooj. Kev siv tsis tau tuaj yeem txhim kho kev ua tau zoo rau ob lub tshuab nrawm thiab yoj soldering.
02
Phau txhais lus
Ua ntej piav qhia txog kev ua haujlwm hauv kev nthuav dav hauv qab no, ua ntej piav ob peb cov lus tseem ceeb
Cim taw tes: raws li qhia hauv daim duab 2.1,
Nws yog siv los pab kho kho qhov muag ntawm lub tshuab tso nkag. Muaj tsawg kawg yog ob asymmetric siv cov ntsiab lus ntawm kab pheeb ces kaum ntawm PCB pawg thawj coj nrog lub thaj. Cov ntsiab lus siv rau kev tawm kho kho qhov muag ntawm tag nrho PCB feem ntau yog nyob rau ntawm txoj haujlwm sib raug rau ntawm kab pheeb ces ntawm tus PCB tag nrho; Qhov kev hloov kho kho qhov muag ntawm cov faib PCB Qhov ntsuas feem ntau yog feem ntau ntawm txoj haujlwm sib raug rau ntawm kab pheeb ces ntawm cov kab pheeb suab ntawm PCB; Rau QFP (Quad ca Pob) nrog cov khoom noj txhuas ≤0.5mm thiab BGA (cov phiaj xwm POB
Cov kev xav tau:
a. Cov duab zoo tshaj plaws ntawm cov lus qhia yog lub voj voog khoom;
b. Qhov luaj li cas ntawm cov lus qhia yog 1.0 + 0.05mm hauv lub taub
c. Cov ntaub ntawv siv tau muab tso rau hauv cov PCB zoo, thiab qhov chaw nyob deb dua 6 hli los ntawm ntug ntawm lub rooj tsavxwm;
d. Txhawm rau kom muaj kev lees paub cov nyhuv luam tawm thiab kev sib tw, v-graps gaps thiab xaim nyob rau hauv 2 hli nyob ze ntawm tus ntug ntawm fiducial Mark;
e. Cov ntaub ntawv siv hluav taws xob thiab cov tawv ncauj khi tau teeb tsa kom raug.
Noj mus rau hauv tus account qhov sib piv ntawm cov xim ntawm cov khoom siv thiab ib puag ncig, tawm ib qho chaw tawm ntawm qhov chaw kho qhov muag, thiab tsis muaj cov cim tau tso cai. Nws tsis tas yuav tsim kho lub nplhaib hlau tiv thaiv sab nraud qhov chaw tsis yog dab tsi.