[PCB_FORUM] Re: Suppressing pads
- From: Gennadiy Kiryukhin <gkiryukhin@xxxxxxxxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Thu, 09 Sep 2010 15:06:16 -0400
Here is what I have done.
I have reduced the pad size for my power/ground planes with full contact
enabled in the shapes. When generating artwork I will choose to suppress
unconnected pads. That should do the trick.
I just have to keep in mind that if the via padstack gets
refreshed/reloaded from the library I would have to edit it again.
I will also look into your suggestions.
Thanks.
On 9/9/2010 2:05 PM, Simon Choi wrote:
if it is inner, try negative plane, and reduce the anti-pad to drill + 16mils
(or 20, depends on material)
if must positive plane (mix gnd with signal), set the shape's "aperture for gap
width" to 4.
tks
At 09/09/2010 11:46 AM-0400, you wrote:
I have a BGA with ground plane under it. The problem I have is that the ball
pitch is too small to create a single ground (power)plane under it with all the
via pads unsuppressed. See picture attached. Instead of having one GND plane I
have small islands. Is there any way to suppress pads on vias that don't have
connections on that plane so that I have more room to create a single GND plane?
Thank you.
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