Through the analysis of the parasitic characteristics of vias, we can see that in high-speed PCB design, seemingly simple vias often bring great negative effects to circuit design. In order to reduce the adverse effects caused by the parasitic effects of the vias, the following can be done in the design:

1. Considering the cost and signal quality, choose a reasonable size via size. For example, for the 6-10 layer memory module PCB design, it is better to use 10/20Mil (drilled/pad) vias. For some high-density small-size boards, you can also try to use 8/18Mil. hole. Under current technical conditions, it is difficult to use smaller vias. For power or ground vias, you can consider using a larger size to reduce impedance.

2. The two formulas discussed above can be concluded that using a thinner PCB is beneficial to reduce the two parasitic parameters of the via.

3. Sim tsis txhob hloov cov khaubncaws sab nraud povtseg ntawm cov teeb liab ntawm lub rooj tsavxwm PCB, uas yog hais tias, sim tsis txhob siv cov vias tsis tsim nyog.

4. Lub hwj chim thiab hauv av pins yuav tsum tau drilled nyob ze, thiab cov hlau lead ntawm lub viav vias thiab tus pin yuav tsum yog luv li sai tau, vim hais tias lawv yuav ua rau kom inductance. Nyob rau tib lub sij hawm, lub hwj chim thiab av leads yuav tsum tuab li sai tau los txo impedance.

5. Muab ib co grounded vias ze ntawm vias ntawm lub teeb liab txheej kom muab lub voj ze tshaj plaws rau lub teeb liab. Nws tseem muaj peev xwm tso tau ntau qhov tsis txaus ntseeg hauv av vias ntawm PCB pawg thawj coj saib. Ntawm chav kawm, tus tsim yuav tsum hloov tau. Cov qauv ntawm kev sib tham ua ntej yog rooj plaub uas muaj cov ntaub qhwv ntawm txhua txheej. Qee zaum, peb tuaj yeem txo lossis txawm tias tshem cov ntaub qhwv ntawm qee cov khaubncaws sab nraud povtseg. Tshwj xeeb tshaj yog thaum qhov ceev ntawm vias yog siab heev, nws yuav ua rau tsim ib qho kev tawg zawj uas cais lub voj nyob rau hauv txheej tooj liab. Yuav kom daws tau qhov teeb meem no, ntxiv rau kev txav txoj hauj lwm ntawm lub viav vias, peb tseem tuaj yeem txiav txim siab tso cov viav vias ntawm cov txheej tooj liab. Lub ncoo loj yog txo.