Dab tsi Yog Qhov Sib Txawv Ntawm PCB Thiab PCBA
May 31, 2020
Coob tus neeg tsis tshiab rau PCB, thiab yuav hnov ntau zaus hauv lub neej, tab sis lawv yuav tsis paub ntau txog PCBA, thiab tej zaum kuj yuav tsis meej pem rau PCB. Yog li PCB yog dab tsi? PCBA hloov pauv li cas? Dab tsi yog qhov txawv ntawm PCB thiab PCBA? Cia' s s los saib kom ze.
* Txog PCB *
PCB yog cov ntawv luv ntawm Printed Circuit Board. Vim tias nws tau tsim los ntawm kev luam ntawv hluav taws xob, nws tau hu ua" luam tawm" Circuit Court board. PCB yog qhov tseem ceeb hauv cov khoom siv hluav taws xob, kev txhawb nqa rau cov khoom siv hluav taws xob, thiab cov neeg nqa khoom rau cov hluav taws xob txuas ntawm cov khoom siv hluav taws xob. PCB tau dav siv hauv kev tsim cov khoom siv hluav taws xob. Cov yam ntxwv ntawm PCBs raug nthuav qhia raws li hauv qab no:
1. Cov xaim xaim nyob ntawm lub siab, qhov ntim me me, thiab qhov hnyav yog qhov sib, uas yog qhov zoo rau qhov me me ntawm cov khoom siv hluav taws xob.
2. Vim tias qhov rov ua dua thiab qhov xwm yeem ntawm cov duab nraaj, qhov yuam kev ntawm cov xov hlau thiab kev sib dhos tau txo, thiab lub sijhawm rau kev saib xyuas, kev debugging thiab kev tshuaj xyuas cov cuab yeej tau txais kev cawmdim.
3. Nws yog qhov zoo rau kev siv tshuab thiab kev siv tshuab, uas txhim kho kev tsim khoom hauv lub zog thiab txo tus nqi ntawm cov khoom siv hluav taws xob.
4. Tus qauv tsim tuaj yeem ua qauv txheej txheem kom yooj yim los sib hloov.
* Txog PCBA *
PCBA yog qhov luv luv ntawm Luam Tawm Circuit Board + Lub Rooj Sib Tham. Hauv lwm lo lus, PCBA yog tag nrho cov txheej txheem ntawm npliag PCB los ntawm SMT thiab tom qab ntawd los ntawm DIP ntsaws.
Nco tseg: SMT thiab DIP yog ob txoj hauv kev los sib xyaw ua ke ntawm PCB. Lub ntsiab sib txawv yog tias SMT tsis tas yuav tho qhov rau ntawm PCB. Hauv DIP, tus lej PIN ntawm ib feem yuav tsum muab ntxig rau hauv qhov drilled.
SMT (Nto Mounted Technology) nto mount tshuab, feem ntau yog siv lub tshuab tso rau mount qee qhov me me ntawm PCB board, nws cov txheej txheem ntau lawm yog: PCB pawg thawj coj, luam ntawv cam muab tshuaj, muab tshuab tso, over-reflow rauv taws thiab tshuaj ntsuam tiav.
DIP yog" ntsaws rau hauv", ntawd yog, muab cov ntu ntawm PCB hom. Cov no yog qee qhov uas muaj qhov loj me thiab tsis tsim nyog rau kev sib koom ua ke ntawm cov seem hauv daim ntawv ntawm cov khoom siv ntsaws thaum tshuab thev naus laus zis. Nws cov txheej txheem ntau lawm yog: nplaum thaub qab, txuas rau, soj ntsuam, yoj yoj, phaj luam ntawv thiab tshuaj ntsuam tiav lawm.
* Qhov sib txawv ntawm PCB thiab PCBA *
Nws tuaj yeem paub los ntawm cov lus qhia saum toj no tias PCBA feem ntau hais txog txheej txheem txheej txheem, uas tseem tuaj yeem nkag siab tias ua tiav pawg thawj tswj hwm, uas yog, PCBA tsuas tuaj yeem suav tom qab cov txheej txheem ntawm PCB pawg thawj coj ua tiav. PCB hais txog cov ntawv luam tawm hauv lub voj voos uas tsis muaj qhov chaw ntawm nws.
Hauv cov xaus: PCBA yog cov txiag tiav; PCB yog pawg tswj hwm.