Feem ntau ntawm cov khoom siv hluav taws xob tsim hluav taws xob niaj hnub no tau tsim los siv tshuab thev naus laus zis lossis SMT, raws li nws tau hu ua feem ntau. Tsis yog tsis muaj laj thawj! Ntxiv rau muab ntau lwm qhov zoo, SMT PCB tuaj yeem mus ntev hauv kev ua kom nrawm PCB cov sijhawm tsim khoom.

Tshuab deg mount

Basic Surface Mount Technology (SMT) Lub hauv paus dhau los ntawm qhov tsim cov tswv yim txuas ntxiv muab kev txhim kho tseem ceeb. Los ntawm kev siv SMT, PCB tsis tas yuav tsum tau hlais rau hauv. Hloov chaw, lawv ua dab tsi yog lawv siv cov tshuaj txhuam txhuam. Ntxiv rau kev ntxiv ntau qhov nrawm, qhov no ua rau cov txheej txheem yooj yim dua. Thaum SMT cov khoom siv sib dhos yuav tsis muaj lub zog los ntawm qhov sib dhos, lawv muab ntau yam zoo los daws qhov teeb meem no.

Kev siv thev naus laus zis saum npoo av dhau los ntawm 5-txheej txheem txheej txheem raws li hauv qab no: 1. Kev tsim PCB – Qhov no yog theem 2 uas PCB tau tsim cov khoom sib txuas. Cov kab laug sab tau tso rau ntawm lub ncoo, tso cai rau cov khoom siv txuas mus rau lub rooj tsav xwm hauv Circuit 3. Nrog kev pab los ntawm lub tshuab, cov khoom sib dhos tau muab tso rau ntawm cov khoom sib dhos kom raug. Ci PCB kom tawv tawv 5. Txheeb xyuas cov khoom ua tiav

Qhov sib txawv ntawm SMT thiab dhau-qhov suav nrog:

Qhov teeb meem thoob plaws hauv qhov chaw nruab nrab ntawm qhov sib dhos tau daws los ntawm kev siv tshuab thev naus laus zis. SMT tseem muab kev hloov pauv yooj yim vim tias nws muab PCB tus tsim qauv kom muaj kev ywj pheej los tsim cov khoom siv tshwj xeeb. Qhov loj me me ntawm cov khoom txhais tau tias cov khoom siv ntau dua tuaj yeem haum rau ntawm ib lub rooj tsavxwm thiab yuav tsum muaj cov laug cam tsawg dua.

Cheebtsam hauv kev teeb tsa SMT yog tsis muaj hlau lead. Qhov luv luv ntawm cov hmoov txhuas ntev ntawm cov khoom siv ntu ntu, qis dua qhov nthuav tawm ncua thiab txo qis ntim ntim.

Qhov ntom ntawm cov khoom siv ib cheeb tsam yog siab dua vim tias nws tso cai rau cov khoom sib txuas rau ob sab.

Nws tsim nyog rau kev tsim khoom ntau, yog li txo tus nqi.

Kev txo qhov loj me ua kom muaj kev nrawm nrawm. Qhov no yeej yog ib qho laj thawj tseem ceeb uas cov tuam ntxhab feem ntau xaiv txoj hauv kev no.

Qhov ntom ntom ntom ntom ntom ntawm cov hlau yaj rub rub lub hauv paus kom haum nrog lub ncoo. Qhov no tig tau kho qhov yuam kev me me uas tej zaum tau tshwm sim hauv kev tso ua ke.

SMT tau ua pov thawj kom ruaj khov dua thaum muaj kev co lossis kev co siab.

Qhov SMT feem ntau raug nqi tsawg dua qhov zoo sib xws hauv qhov.

Qhov tseem ceeb, SMT tuaj yeem txo sijhawm ntau lawm vim tias tsis xav tau kev khawb. Ib qho ntxiv, SMT cov khoom tuaj yeem tso rau ntawm tus nqi ntau txhiab toj ib teev, piv rau tsawg dua ib txhiab los ntawm kev teeb tsa qhov. Qhov no, nyeg, ua rau cov khoom lag luam tsim tawm ntawm qhov xav tau nrawm, uas txuas ntxiv txo sijhawm rau kev ua lag luam. Yog tias koj tab tom xav kom nrawm PCB cov sijhawm tsim khoom, SMT yog cov lus teb pom tseeb. Los ntawm kev siv kev tsim qauv thiab Kev Tsim Khoom (DFM) cov cuab yeej software, xav tau kev rov ua haujlwm thiab rov tsim kho cov kab hluav taws xob sib txawv tau raug txo qis, txuas ntxiv ua kom nrawm dua thiab muaj peev xwm tsim cov qauv nyuaj.

Txhua yam no tsis tau hais tias SMT tsis muaj qhov tsis zoo ib txwm muaj. SMT tej zaum yuav tsis ntseeg tau thaum siv los ua ib txoj hauv kev txuas rau cov khoom uas muaj lub ntsej muag ua haujlwm nyuaj. Cheebtsam uas ua kom muaj cua sov ntau lossis tiv taus cov khoom siv hluav taws xob siab tsis tuaj yeem teeb tsa siv SMT. Qhov no yog vim tias cov laug tuaj yeem yaj ntawm qhov kub. Yog li, kev teeb tsa los ntawm qhov yuav txuas ntxiv tuaj yeem siv rau hauv qhov xwm txheej tshwj xeeb cov tshuab, hluav taws xob, thiab cov cua sov ua rau SMT tsis muaj txiaj ntsig. Ib qho ntxiv, SMT tsis tsim nyog rau kev tsim qauv vim tias cov khoom siv yuav xav tau ntxiv lossis hloov pauv thaum lub sijhawm tsim qauv, thiab cov khoom sib xyaw ua kom muaj zog siab yuav nyuaj rau txhawb nqa.

Siv SMT

Nrog qhov muaj txiaj ntsig zoo uas SMT muab, nws yog qhov xav tsis thoob tias lawv tau dhau los ua tus qauv tsim thiab tsim khoom niaj hnub no. Yeej lawv tuaj yeem siv tau nyob hauv txhua qhov xwm txheej uas xav tau kev ntseeg siab thiab ntim siab PCBS xav tau.