cov luam tawm hauv Circuit Court board muaj cov insulating substrate, lub rooj tsav xwm hauv nws tus kheej, thiab luam tawm cov xov hlau lossis cov cim tooj liab uas muab qhov nruab nrab dhau los uas hluav taws xob ntws los ntawm Circuit. Cov khoom siv hauv qab kuj tseem siv ua PCB rwb thaiv tsev los muab hluav taws xob rwb thaiv tsev ntawm cov khoom siv hluav taws xob. Lub rooj tsavxwm ntau tus neeg yuav muaj ntau dua ib lub substrate uas cais cov txheej. Dab tsi yog PCB txheej txheem raug ua los ntawm?

PCB substrate khoom

Cov khoom siv PCB substrate yuav tsum yog ua los ntawm cov khoom siv tsis zoo vim tias qhov no cuam tshuam nrog txoj hauv kev tam sim no los ntawm kev luam tawm Circuit. Qhov tseeb, cov khoom siv hauv qab yog PCB insulator, uas ua raws li txheej txheej piezoelectric insulator rau lub rooj tsav xwm hauv Circuit Court. Thaum txuas cov xov hlau ntawm cov txheej txheem sib txawv, txhua txheej ntawm Circuit Court txuas nrog los ntawm qhov plated ntawm lub rooj tsavxwm.

Cov ntaub ntawv uas tuaj yeem siv los ua cov txheej txheem muaj txiaj ntsig suav nrog fiberglass, teflon, ceramics thiab qee cov polymers. Cov substrate nrov tshaj plaws niaj hnub no yog tej zaum FR-4. Fr-4 yog cov iav fiberglass epoxy laminate uas pheej yig, muab cov rwb thaiv hluav taws xob zoo thiab muaj cov nplaim hluav taws kub siab dua li fiberglass ib leeg.

PCB substrate yam

Koj yuav pom tsib lub ntsiab PCB txheej txheem ntawm cov ntawv luam tawm Circuit Court. Hom substrate twg yuav raug siv rau cov ntawv luam tawm Circuit Circuit tseeb nyob ntawm koj lub chaw tsim khoom PCB thiab qhov zoo ntawm daim ntawv thov. PCB substrate hom yog raws li hauv qab no:

Fr-2: FR-2 tej zaum yog qib qis tshaj plaws ntawm cov substrate koj yuav siv, txawm tias nws cov nplaim hluav taws tsis zoo, raws li qhia los ntawm FR lub npe. Nws tau tsim los ntawm cov khoom siv hu ua phenolic, ib daim ntawv uas tsis tau pleev xim nrog iav fiber. Cov khoom siv hluav taws xob pheej yig nyiam siv cov ntawv luam tawm Circuit Circuit nrog FR-2 substrates.

Fr-4: Ib qho ntawm cov txheej txheem PCB feem ntau yog cov iav fiberglass braided substrate uas muaj cov khoom nplaim taws. Txawm li cas los xij, nws muaj zog dua li FR-2 thiab tsis tawg lossis tawg yooj yim, uas yog vim li cas nws thiaj siv rau hauv cov khoom lag luam siab. Txhawm rau txhawm rau qhov lossis ua cov iav iav, cov tuam txhab tsim khoom siv PCB siv cov cuab yeej tungsten carbide nyob ntawm qhov xwm txheej ntawm cov khoom.

RF: RF lossis RF substrate rau cov ntawv luam tawm Circuit board npaj rau siv hauv kev siv hluav taws xob siab RF. Cov khoom siv substrate yog tsim los ntawm cov yas dielectric qis. Cov khoom siv no muab rau koj cov khoom siv hluav taws xob muaj zog heev, tab sis cov cuab yeej siv zog tsis muaj zog, yog li nws yog qhov tseem ceeb uas yuav tsum tau kho lub rooj tsav xwm RF kom raug rau hom ntawv thov.

Kev yoog raws: Txawm hais tias FR cov laug cam thiab lwm yam ntawm cov substrates zoo li txhav heev, qee qhov kev thov yuav xav tau siv cov laug cam hloov pauv. Cov kev hloov pauv yooj yim no siv cov yas, hloov pauv yas lossis zaj duab xis ua cov substrate. Txawm hais tias cov phaj hloov tau yooj yim los tsim, lawv muaj qhov tshwj xeeb. Piv txwv li, koj tuaj yeem khoov lub rooj hloov pauv kom haum rau qhov chaw uas lub rooj tsav xwm ib txwm tsis tuaj yeem ua.

Hlau: Thaum koj daim ntawv thov cuam tshuam nrog cov khoom siv hluav taws xob, nws yuav tsum muaj cov cua sov zoo.Qhov no txhais tau tias cov substrates uas tsis muaj cua sov tiv taus (xws li cov khoom siv hluav taws xob) lossis cov hlau uas tuaj yeem tswj tau cov dej ntws zoo ntawm cov tshuab hluav taws xob luam tawm cov phiaj xwm hluav taws xob tuaj yeem siv tau.