Puas yog Ib qho-chip vuam txheej txheem tseem ceeb

Ntau tus pcb engineers tau them nyiaj me ntsis rau cov txheej txheem vuam thaum ntxov, thiab txawm tias tsis tshua muaj rov qab mus xyuas cov pob qij txha thaum ua cov qauv. Peb feem ntau xav tias cov pob qij txha uas muaj qhov tsis zoo yog qhov tsis zoo. Piv txwv li, kev cuam tshuam cov pob qij txha, cov pob qij txha txias, lub tshuab lub qhov, thiab lwm yam tuaj yeem ua rau lub zog ntawm txhua yam. Lub sharpening ntawm solder pob qij txha qhia tsis zoo wetting. Kev siv ntau dhau tuaj yeem ua rau tsis muaj peev xwm txiav txim siab qhov ntub dej ntawm cov ntaub qhwv, thiab lwm yam.

Yog tias peb tab tom soldering, tsis muaj teeb meem nrog lwm cov txheej txheem ntawm kev sib koom ua ke, tab sis muaj cov lus qhia ntxiv, nws puas yuav cuam tshuam rau lub teeb liab?

Cov lus teb yog yog, yog tias qhov zaus ntawm lub teeb liab siab heev nws yuav muaj txiaj ntsig. Nyob rau hauv high-theem digital Circuit Court, txawm hais tias nws yog ib tug solder joint tip los yog ib tug ntawm stub yuav muaj kev cuam tshuam loj heev rau lub teeb liab, thiab txawm ua rau lub teeb liab yuav siv tsis tau.

Piv txwv li peb lub rooj tsavxwm PCB yog yim txheej, thiab cov teeb liab txuas nrog ntawm thawj txheej mus rau txheej thib peb. Nyob rau hauv cov txheej txheem ua phaj, cov vias feem ntau yog los ntawm PCB, txawm hais tias peb tsuas yog xav tau thawj txheej mus rau txheej thib peb kom xa cov teeb liab. Qhov no ntawm lub qhov yog txaus, tab sis qhov tseeb, qhov ntawm lub qhov tseem txuas ntxiv los ntawm txheej thib peb mus rau sab nraud ntawm PCB, thiab qhov ntxiv ntawm lub qhov yog qhov ntawm lub qhov stub.

Nyob rau hauv high-ceev digital circuits, ntawm stubs, zoo li peb lub TV kav hlau txais xov yav dhau los, yuav tso tawm hluav taws xob hluav taws xob thiab tau txais kev cuam tshuam, uas yuav cuam tshuam rau qhov zoo ntawm high-speed digital signals. Thaum tus nqi kis tau tus mob siab tshaj 10Gbps, lub viav vias yuav cuam tshuam rau kev nthuav tawm kev ncaj ncees ntawm lub teeb liab ceev. Feem ntau, thaum peb tsim lub rooj tsav xwm hauv Circuit Court, peb tseem yuav muab kev tiv thaiv tiv thaiv qhov teeb meem no, siv cov txheej txheem backdrill kom tshem tawm cov khoom siv tsis siv los ntawm cov hlau, thiab txo qis ntawm cov stub kom tsawg dua 10mil.

Nyob rau hauv daim duab saum toj no, daim duab qhov muag ntawm sab laug yog cov nyhuv tom qab cov txheej txheem backdrill yog siv los tshem tawm ntawm cov stub, thiab daim duab sab xis yog cov nyhuv nrog cov viav vias stub. Nws tuaj yeem pom tias cov ntaub ntawv qhov muag hauv daim duab yog yuav luag kaw. Lub teeb liab zoo kuj tsis zoo.