[PCB_FORUM] Re: Suppressing pads
- From: Simon Choi <simonc@xxxxxxxxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Fri, 10 Sep 2010 13:08:46 -0400
I will put the modified via in local folder, where normally should be the
highest priority in the library tree.
hence doing refresh wouldn't back to original.
after job done, zip the mod'd via with all the design doc for future revision
change.
tks
At 09/09/2010 03:06 PM-0400, you wrote:
>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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