Kev tsim hluav taws xob yog ib yam tseem ceeb tshaj plaws ntawm kev lag luam xov xwm kev lag luam.Rau kev tsim khoom thiab sib sau ua ke ntawm cov khoom siv hluav taws xob, PCBA (luam tawm Circuit Board sib dhos) yog qhov yooj yim tshaj plaws thiab tseem ceeb tshaj plaws.Muaj feem ntau SMT (Nto Mount Technology) thiab DIP (Dual in -line pob) kev tsim khoom.
Lub hom phiaj nrhiav hauv kev tsim hluav taws xob hauv kev lag luam yog nce qhov kev ua haujlwm ceev thaum txo qhov loj, piv txwv li, ua kom cov khoom me me thiab sib dua.Hauv lwm lo lus, lub hom phiaj yog txhawm rau ntxiv cov haujlwm ntau dua rau tib lub rooj tsav xwm loj lossis tswj kom muaj kev ua haujlwm zoo ib yam tab sis txo qhov chaw.Tib txoj hauv kev kom ua tiav lub hom phiaj yog kom txo qis cov khoom siv hluav taws xob tsawg, siv lawv los hloov cov khoom sib xyaw.Raws li qhov tshwm sim, SMT tau tsim.
SMT thev naus laus zis yog ua raws li kev hloov cov khoom siv hluav taws xob zoo ib yam los ntawm wafer-hom hluav taws xob cov khoom siv hluav taws xob thiab siv hauv-phaj rau ntim.Nyob rau tib lub sijhawm, txoj hauv kev zoo tshaj plaws ntawm kev drilling thiab ntxig tau raug hloov los ntawm kev muab tshuaj maj nrawm rau ntawm qhov chaw ntawm PCB.Ntxiv mus, thaj tsam ntawm PCB tau raug txo kom tsawg los ntawm kev tsim ntau txheej ntawm cov laug cam los ntawm ib txheej ntawm pawg thawj coj saib.
Cov cuab yeej tseem ceeb ntawm SMT cov kab ntau lawm suav nrog: Stencil tshuab luam ntawv, SPI, tuaj tos thiab tso tshuab, reflow soldering qhov cub, AOI.
Qhov zoo ntawm SMT cov khoom
Txhawm rau siv SMT rau cov khoom lag luam tsis yog tsuas yog kev lag luam xav tau tab sis kuj tseem cuam tshuam ncaj qha rau tus nqi txo.SMT txo tus nqi vim yog cov hauv qab no:
1. Qhov xav tau ntawm thaj chaw thiab txheej txheej rau PCB raug txo.
Qhov yuav tsum tau muaj thaj tsam ntawm PCB rau nqa cov khoom yog txo qis vim tias qhov loj ntawm cov khoom sib dhos tau raug txo kom tsawg.Ntxiv mus, cov khoom siv rau PCB raug txo qis, thiab tseem tsis muaj nqi ua haujlwm ntxiv ntawm qhov drilling rau hauv qhov.Nws yog vim hais tias lub soldering ntawm PCB nyob rau hauv lub SMD txoj kev yog ncaj qha thiab tiaj tus es tsis txhob cia siab rau cov pins ntawm lub Cheebtsam nyob rau hauv DIP kom dhau los ntawm lub drilled qhov thiaj li yuav tau soldered rau PCB.Tsis tas li ntawd, PCB layout yuav ua tau zoo dua nyob rau hauv qhov tsis muaj qhov los ntawm qhov, thiab vim li ntawd, cov txheej txheem ntawm PCB yuav tsum tau txo.Piv txwv li, thawj plaub txheej ntawm DIP tsim tuaj yeem raug txo mus rau ob txheej los ntawm txoj kev SMD.Nws yog vim hais tias thaum siv txoj kev SMD, ob txheej ntawm cov laug cam yuav txaus rau haum rau tag nrho cov xaim.Tus nqi rau ob txheej ntawm cov laug cam yog qhov tseeb tsawg dua li ntawm plaub txheej ntawm cov laug cam.
2. SMD yog qhov tsim nyog rau ntau qhov ntau lawm
Lub ntim rau SMD ua rau nws xaiv zoo dua rau kev tsim khoom tsis siv neeg.Txawm hais tias rau cov khoom siv DIP cov pa, kuj tseem muaj qhov chaw sib dhos tsis siv neeg, piv txwv li, hom kab rov tav lub tshuab ntxig, ntsug hom ntxig tshuab, khib-daim ntawv ntxig tshuab, thiab IC inserting tshuab;Txawm li cas los xij, kev tsim khoom ntawm txhua lub sijhawm chav tsev tseem tsawg dua SMD.Raws li qhov ntau lawm ntau ntxiv rau txhua lub sijhawm ua haujlwm, chav tsev ntawm cov nqi tsim khoom raug txo qis.
3. Tsawg tus neeg ua haujlwm yuav tsum tau ua
Feem ntau, tsuas yog peb tus neeg ua haujlwm yuav tsum tau ua rau SMT ntau lawm kab, tab sis tsawg kawg yog 10 mus rau 20 tus neeg yuav tsum tau ua rau ib kab DIP.Los ntawm kev txo tus naj npawb ntawm cov neeg, tsis yog tsuas yog tus nqi ntawm cov neeg ua haujlwm raug txo, tab sis kuj yog kev tswj hwm yooj yim dua.
Post lub sij hawm: Apr-07-2022