VIAs inside SMD Pads ? (and a thank you)

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1

Hello, I have a question concerning VIAs:

I am creating a very small PCB wich is densly covered with SMD-Parts. I have seen that VIAs are sometimes placed inside (!) SMD pads. Is this common or should it be avoided ?

Let me add some praise:
I am using KiCad for years now, since V4.x . But usually I am drawing single sided, low density layouts for home production.
Now I need a “real” layout. 2-sided, both sides SMD.
So I took the complete tour for the first time: Board Specifications, Layer configuration, Design Rules, Courtyards, semiautomatic routing, changing Footprints on the fly, and so on …

To my surprise everything went smooth and fine (V7.02) !
KiCad has reached an impressive level of maturity.
One more Time: Thanks to the developers and all other KiCad team members !! :hugs:

2 Likes
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It is possible, but care should be taken for production (if we are not talking about hand soldered prototypes) to avoid the solder to be sucked out of the pad during reflow. Usually vias filled with copper or some kind of synthetic compound are used; the downside is $$$.

3

I have never used vias in standard pads but:

  • I think that if you will be hand soldering your PCB than you should have no problems with such vias,
  • I have read that if via hole is smaller than 0.3mm than it not stoles solder during reflow.
4

It is via in pad. You should try to avoid unless necessary.

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