Hauv qhov blog no, peb yuav tshawb xyuas cov yam tseem ceeb uas cuam tshuam rau cov nqi sib tw thiab hloov pauv PCB los txhim kho koj cov khoom siv hluav taws xob hluav taws xob thiab txhim kho koj cov nqi hluav taws xob ntau lawm.
Printed circuit boards (PCBs) yog ib feem tseem ceeb ntawm yuav luag txhua yam khoom siv hluav taws xob uas peb siv niaj hnub no. Tsis yog peb cov smartphones, laptops, lossis txawm tias cov khoom siv hauv tsev, PCBs ua lub luag haujlwm tseem ceeb hauv kev muab kev sib txuas thiab txhawb nqa cov khoom siv no. Txawm li cas los xij, cov nqi tsim khoom PCB tuaj yeem sib txawv nyob ntawm ntau yam.
Tsim complexity:
Ib qho ntawm qhov tseem ceeb cuam tshuam rau PCB tus nqi yog qhov tsim qauv nyuaj. Qhov ntau txoj kev tsim, tus nqi tsim khoom ntau dua. Complex designs feem ntau xav tau kev tshaj lij thiab kev sib tw, uas yuav tsum tau muaj kev tsim khoom tshwj xeeb thiab sijhawm ntxiv. Yog li ntawd, tsim complexity yuav tsum tau txiav txim siab thaum kwv yees tus nqi PCB.
Kev xaiv cov khoom siv:
Lwm qhov tseem ceeb cuam tshuam rau tus nqi PCB yog xaiv cov khoom siv. Rigid PCBs feem ntau yog tsim los siv FR-4, siv dav siv cov khoom siv hluav taws xob zoo nrog cov khoom siv thermal thiab hluav taws xob zoo. Txawm li cas los xij, muaj qhov sib txawv ntawm qhov zoo thiab tuab ntawm FR-4, uas tuaj yeem cuam tshuam rau tag nrho cov nqi ntawm PCB. Flexible PCBs, ntawm qhov tod tes, siv cov ntaub ntawv hloov tau yooj yim xws li polyimide. Cov ntaub ntawv no kim dua FR-4, uas ua rau tus nqi siab dua rau PCBs hloov tau.
Board loj thiab tus naj npawb ntawm cov khaubncaws sab nraud povtseg:
Qhov loj thiab tus naj npawb ntawm cov txheej txheem ntawm PCB kuj ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws cov nqi. Cov laug cam loj dua lossis cov boards nrog ntau txheej yuav tsum tau siv ntau cov ntaub ntawv thiab lub sijhawm ntau lawm, ua rau cov nqi nce ntxiv. Tsis tas li ntawd, kev tsim cov laug cam loj dua tuaj yeem xav tau cov cuab yeej tshwj xeeb thiab cov chaw, ntxiv cuam tshuam rau tag nrho cov nqi. Nws yog ib qho tseem ceeb rau kev sib npaug ntawm qhov loj me thiab txheej txheej uas yuav tsum tau ua nrog rau kev ua haujlwm kom zoo dua tus nqi.
Cov khoom ntom ntom:
Qhov ntom ntawm cov khoom ntawm PCB ncaj qha cuam tshuam rau nws cov nqi tsim khoom. Kev tiv thaiv siab dua txhais tau tias ntau cov khoom ntim tau ntim rau hauv qhov chaw me me, ua rau muaj kev sib txuas ntau dua thiab cov kab me me. Kev ua tiav qhov siab ntawm cov khoom siv feem ntau yuav tsum muaj cov txheej txheem tsim khoom zoo xws li microvia drilling thiab stacked vias, uas ua rau cov nqi tag nrho ntawm PCB. Yog li ntawd, nws yog ib qho tseem ceeb kom muaj kev sib npaug ntawm qhov sib npaug ntawm cov khoom siv ntom ntom thiab tus nqi kom ntseeg tau tias kev ua haujlwm zoo yam tsis muaj kev cuam tshuam ntau dhau ntawm tus nqi.
Tus naj npawb ntawm qhov:
Drilling qhov yog ib feem tseem ceeb ntawm PCB manufacturing raws li lawv pab txhawb kev sib txuas ntawm cov khaubncaws sab nraud povtseg thiab tivthaiv mounting los ntawm vias. Tus naj npawb thiab qhov loj ntawm drilled qhov cuam tshuam rau cov nqi tsim khoom. Drilling qhov loj thiab me, qhov muag tsis pom lossis faus vias, thiab microvias tag nrho ua rau cov nqi nce ntxiv vim lub sijhawm ntxiv thiab qhov nyuaj uas yuav tsum tau ua los ntawm cov txheej txheem drilling. Txhawm rau kom muaj kev sib npaug ntawm kev ua haujlwm thiab tus nqi, tus naj npawb thiab hom tho qhov yuav tsum tau ua tib zoo xav txog.
Kev kho deg:
Kev npaj nto yog ib kauj ruam tseem ceeb hauv kev tsim PCB los tiv thaiv cov kab tooj liab los ntawm oxidation thiab xyuas kom muaj kev sib tw. Muaj ntau yam kev kho saum npoo av muaj xws li HASL (Hot Air Solder Leveling), ENIG (Electroless Nickel Immersion Gold) thiab OSP (Organic Solderability Preservative). Txhua txoj kev npaj saum npoo muaj cov nqi sib txawv, feem ntau txiav txim siab los ntawm cov khoom siv thiab kev ua haujlwm. Thaum xaiv qhov zoo saum npoo tiav rau koj lub PCB, nws yog ib qho tseem ceeb uas yuav tsum tau ntsuas kev ua haujlwm thiab kev siv nyiaj.
Quantity ntawm kev txiav txim:
PCB txiav txim kom muaj nuj nqis cuam tshuam tus nqi tag nrho. Kev txiav txim loj dua feem ntau ua rau kev lag luam ntawm cov nplai, qhov twg cov nqi tsim khoom raug txo. Qhov no yog vim cov tuam ntxhab tuaj yeem ua kom zoo dua lawv cov txheej txheem tsim khoom, txo cov nqi teeb tsa thiab txhim kho kev ua haujlwm rau kev txiav txim ntau. Ntawm qhov tod tes, kev txiav txim me me yuav ua rau muaj teeb meem ntxiv thiab cov nqi tsim khoom, ua rau lawv kim dua. Yog li ntawd, kev txiav txim loj dua yuav pab txo tus nqi ntawm PCBs.
Kev xaiv tus neeg muab khoom:
Kev xaiv tus neeg muag khoom PCB yog qhov tseem ceeb los ua kom muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo. Cov neeg muag khoom sib txawv tuaj yeem muaj cov qauv nqi sib txawv raws li lawv cov kev txawj ntse, khoom siv, thiab kev tsim khoom muaj peev xwm. Nws yog ib qho tseem ceeb rau kev tshawb fawb thiab tshuaj xyuas cov neeg siv khoom muaj peev xwm, suav nrog cov khoom lag luam xws li lawv lub koob npe nrov, cov ntawv pov thawj, cov txheej txheem tswj kom zoo thiab cov neeg siv khoom xyuas. Ua haujlwm nrog cov neeg siv khoom txhim khu kev qha thiab paub txog yuav pab ua tiav qhov zoo tshaj plaws sib npaug ntawm tus nqi thiab qhov zoo.
Hauv cov ntsiab lus
Muaj ntau yam uas cuam tshuam rau tus nqi ntawm cov PCBs nruj thiab hloov tau.Tsim complexity, xaiv cov ntaub ntawv, board loj, tivthaiv ntom, tus naj npawb ntawm laum qhov, nto tiav, txiav txim kom muaj nuj nqis thiab tsum xaiv tag nrho cov cuam tshuam rau tag nrho cov nqi. Los ntawm kev ua tib zoo xav txog cov xwm txheej no thiab ua kom muaj kev sib npaug ntawm kev ua haujlwm thiab kev lag luam, cov khoom siv hluav taws xob tuaj yeem ua kom zoo dua PCB cov nqi thaum ua kom zoo tshaj plaws thiab kev ua tau zoo ntawm lawv cov khoom.
Post lub sij hawm: Oct-11-2023
Rov qab
