SMT sawv rau Surface Mount Technology, tag nrho cov thev naus laus zis thiab soldering deg mount ua ke rau cov ntawv luam tawm Circuit lossis PCB. Tus txheej txheem tiag raug nthuav qhia hauv qab no:
Ua ntej, aPCB stencilyog mus raws nplaim ntawm cov laug cam thiab cam muab tshuaj yog thov siv tus squeegee kom ntseeg tau tias lub ntsuas phoo raug coated nrog ib yam thiab tus nqi tswj ntawm ham muab tshuaj. Qhov thib ob, dhau ntawm kev tuaj tos thiab qhov chaw tshuab lossis tes muab tso, cov khoom siv tau muab ntsia mus rau cov laug cam hauv lawv cov chaw. Cov ntaub ntub dej ua tiav yuav ua raws li cov nplaum ib ntus tab sis nws tseem yog ib qho tseem ceeb kom ntseeg tau tias cov laug cam tau maj mam txav kom tiv thaiv qhov tsis zoo. Thirdly, cov laug cam kis tau los ntawm qhov cub reflow uas kawm cov laug cam ntuag rau hluav taws xob infrared, melting muab tshuaj txhuam cov cam thiab txoj kev sib txuas ham. Tom qab ntawd cov laug cam dhau los ntawm lub tshuab AOI, lossis Tsis Siv Neeg Lub Tshuab Kev Ntsuas Hluav Taws Xob uas tau sau cov naj npawb ntawm cov tshev zoo ntawm cov laug cam pom, xws li kev sib xyaw ua ke thiab kuaj cov txuas hniav txuas. Cov laug cam mam li soj ntsuam ntxiv mus. Thaum xyoo 1980, SMT cov cuab yeej tsim tawm tau dhau los ua neeg tawg ntau dua thiab vim li ntawd, yog dav siv nyob rau hauv ntau lawm. Raws li tus nqi tau txo thiab cov haujlwm kev ua haujlwm tau zoo dua, ntau tshaj tab sis cov cuab yeej siv yig tau dhau los. Tshuab deg mount muaj ntau qhov zoo, tsis txwv rau txo cov ntim ntawm cov twj, xws li kev ua kom zoo dua, ua haujlwm ntau dua thiab txo tus nqi. Xws li, SMT coj nrog nws ib tiam tshiab ntawm cov khoom siv hluav taws xob sib sau ua ke, uas tau siv dav hauv kev siv los ntawm kev tsav dav hlau, kev sib txuas lus, tsheb thiab kho mob hluav taws xob, nqis rau cov khoom siv hauv tsev thiab lwm cov teb. SMD yog cov ntawv luv rau saum mount deg, ib qho khoom siv sib sau ua ke siv cov txheej txheem saum npoo thiab cov thev naus laus zis. Hauv cov theem thaum ntxov, SMD tau muag ntawm tes ntawm tes. Tom qab ntawd thawj zaug ntawm kev tuaj tos thiab qhov chaw tshuab tuaj yeem tsuas lis ob peb yam khoom siv yooj yim. Qhov ntau cov khoom siv nyuaj thiab siv me me tseem yuav tsum muab tso rau hauv phau ntawv. Tsis ntev ua ntej kev qhia ntawm cov khoom siv saum npoo av ntau dua 20 xyoo dhau los, tau tsim ib lub sijhawm tshiab. Los ntawm tej yam yooj yim resistors rau complex ICs, yuav luag txhua los ntawm lub qhov tivthaiv tam sim no muaj qhov sib npaug SMT.
Kab lus thiab daim duab ntawm Is Taws Nem, yog tias muaj ib qho dab tsi pls hu rau peb ua ntej.
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