PCB yog cov khoom siv hluav taws xob ntau tshaj plaws hauv cov khoom siv hluav taws xob thiab ib qho tseem ceeb ntawm cov khoom siv hluav taws xob. Cias muab, PCB yog ib hom "connector" thiab "cim transmitter" hauv cov khoom siv hluav taws xob. Qhov kev ua tau zoo thiab qhov zoo ntawm PCB chips feem ntau nyob ntawm qhov kev xaiv ntawm PCB board. Yuav ua li cas nkag siab txog cov kev txwv ntawm PCB pawg thawj coj saib?
1, Board qauv
Cov qauv ntawm PCB pawg thawj coj muab faib ua plaub ntu: txheej txheej txheej, txheej txheej txheej, txheej txheej tooj liab, thiab txheej txheej khoom. Cov txheej txheem hluav taws xob feem ntau yog cov xaim hluav taws xob ntawm lub voj voog, cov txheej txheem dielectric feem ntau yog txheej txheej rwb thaiv tsev, txheej txheej tooj liab yog txheej tiv thaiv thiab txheej hauv av, thiab cov khoom siv txheej yog cov khoom siv hluav taws xob tiag tiag. Kev ua haujlwm ntawm cov ntaub ntawv sib txawv ntawm ntau txoj haujlwm ntawm PCB pawg thawj coj saib.
2, Cov txheej txheem conductive
Phaj thickness nyob rau hauv centimeters thiab tooj liab foil thickness (stainless steel lwm yam khoom siv) feem ntau siv tsis. Cov no yuav tsum tau hloov kho raws li kev siv tiag tiag. Rau PCB boards uas yuav tsum tau siab rau high-ceev kis tau tus mob thiab teeb liab, nws yog pom zoo kom ua kom cov thickness ntawm cov conductive txheej kom tsim nyog los muab kev zoo siab tsis kam thiab pab kom ceev thiab raug teeb liab kis tau tus mob.
3, Dielectric txheej tsis
Cov txheej txheem ntawm dielectric feem ntau suav nrog dielectric tas li thiab dielectric poob. Lub dielectric tsis tu ncua yog hais txog lub zog cia cov yam ntxwv ntawm cov khoom. Feem ntau, qhov me me ntawm qhov dielectric tsis tu ncua, qhov cuam tshuam tsawg dua ntawm cov txheej dielectric muaj nyob rau ntawm cov teeb liab tawm ntawm qhov siab, ua rau muaj kev ua tau zoo dua. Dielectric poob yog qhov taw qhia ntawm lub zog attenuation yam ntxwv ntawm cov khoom. Qhov me me, qhov tsawg zog yog siv nyob rau hauv cov khoom ntawm high zaus, thiab qhov zoo dua qhov kis tau tus mob thiab stability ntawm lub PCB board.
4, Cov txheej txheem tooj liab
Cov txheej txheem ntawm tooj liab-clad feem ntau suav nrog lub thickness thiab muaj pes tsawg leeg ntawm cov ntawv ci tooj liab. Hauv kev tsim qauv, kev xaiv ntawm cov ntawv ci tooj liab yog feem ntau raws li cov kev xav tau tiag tiag, uas tuaj yeem raug xam los ntawm cov cuab yeej xws li tshuab xam zauv. Qhov sib xyaw ntawm cov ntawv ci tooj liab sib txawv nyob ntawm cov khoom siv hlau sib txawv, uas tseem muaj kev cuam tshuam loj rau cov khoom siv hluav taws xob ntawm PCB boards.
5, Cov txheej txheem txheej txheem
Cov txheej txheem ntawm cov cuab yeej siv yog ib qho teeb meem ntawm kev xaiv cov khoom siv, uas cuam tshuam ncaj qha rau cov khoom siv dag zog, kev ruaj ntseg, thiab kev ua neej nyob. Cov duab, qhov ntom ntom, qib molecular, thiab lwm yam yog txhua yam tseem ceeb rau kev xaiv cov khoom. Yog li ntawd, thaum xaiv cov ntaub ntawv, nws yog ib qho tsim nyog yuav tsum tau xyuas cov txheej txheem ntawm PCB pawg thawj coj saib.