Should we minimize via quantity?

Carr

My layout involves a lot of vias. When I looked at the drill output file, its about over 400 vias. The bottom traces are kept as short as possible so as to just allow routing on the top layer, but because of that, I have a lot of vias. Is this common to have so many vias? Should I look to make longer traces to reduce via count?

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Reply 2016-07-20 09:22:41

Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

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For basic low frequency work vias are pretty much "meh". The only thing you need to watch for is when running larger currents - the vias tend to have a higher resistance, so dissipate more heat.

Reply With Quote 2017-01-04 07:19:46

zanittie

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One thing we need to pay attention to is that when you're doing very large scale production, or optimizing heavily for cost, vias do increase board cost a lot.

Reply With Quote 2016-11-29 22:02:00

azhar

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For a two sided board the ground plane is best kept as intact as possible. This is a generalism so it can change depending on the type of circuit. Having said that, 400 vias seems a lot.

Reply With Quote 2016-11-24 01:02:27

xilinliu

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The more vias, the more time your board has to spend in the drilling CNC. So the cost will increase.

Reply With Quote 2016-09-22 10:16:39

cernatescu victor

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Impressive and helpful.

Reply With Quote 2016-07-22 09:22:41