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PCB Manufacturing

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PCB manufacturing consists of many steps, such as PCB CAM, Panelization, Copper patterning, etc. This group is mainly talked about the problems during PCB manufacturing!

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Should we minimize via quantity?

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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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2016/7/20 9:22:41

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

ISA, s.r.o.

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.

2017/1/4 7:19:46

zanittie

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.

2016/11/29 22:02:00

azhar

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.

2016/11/24 1:02:27

xilinliu

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

2016/9/22 10:16:39

cernatescu victor

Impressive and helpful.

2016/7/22 9:22:41

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