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Technical ArticleWhy are vias bad for high-frequency PCBs (Printed Circuit Boards)?Time：2018-11-09 09:34:40 Click：
Via is made of drill hole +pad area around the drill hole.
During the high speed and high frequency PCBs, a lot vias are obviously bad.
1)Via will take up a lot spaces, which is bad for PCB Layout. 2)Via as the breakpoint of the impedance discontinuity in transmission line, which will cause a reflection of a signal.
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