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Autodesk EAGLE
EAGLE User Support (English) Overlap error with Vias in pad
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  • Replies 5 replies
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  • pad
  • drc
  • vias
Related

Overlap error with Vias in pad

Former Member
Former Member over 13 years ago

Hello,

I am trying to place vias inside the area of a pad.  The vias are part of the same net as the pad.  When I run DRC, I get an overlap error.  How do I place vias in a pad in a such a way that DRC is happy?

Thanks

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  • Former Member
    0 Former Member over 13 years ago

    From a previous post discussing thermal pads and vias, it looks like the answer to my question is no.

    To confirm, is there no way to add vias to a pad without getting DRC errors?

     

    http://www.element14.com/community/message/31966#31966/l/re-packages-with-vias-in-smd-pads

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  • Former Member
    0 Former Member over 13 years ago in reply to Former Member

    On 06.05.2012 19:33, Mike Ropers wrote:

    From a previous post discussing thermal pads and vias, it looks like the answer to my question is no.

    To confirm, is there no way to add vias to a pad without getting DRC errors?

     

    http://www.element14.com/community/message/31966#31966/l/re-packages-with-vias-in-smd-pads (/message/31966#31966/l/re-packages-with-vias-in-smd-pads)

     

     

     

    If the via has the same  name as the signal that belongs to the pad

    it is allowed to let them overlap without a DRC overlap error. But

    it could happen that you will get a "Drill Distance" error in case

    the  drills are too close (depending on the Drill/Hole distance

    setting in the Design Rules.

     

    --

    Mit freundlichen Gruessen / Best regards

    Richard Hammerl

      CadSoft Support -- hotline@cadsoft.de

      FAQ: http://www.cadsoft.de/training/faq/

     

     

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  • Former Member
    0 Former Member over 13 years ago in reply to Former Member

    Richard,

    Thanks for your reply.  Would a "Drill Distance" error show up in DRC as just that?  The error I am getting in DRC is "Overlap" not "Drill Distance"

     

    Mike

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  • Former Member
    0 Former Member over 13 years ago in reply to Former Member

    On 09.05.2012 18:36, Mike Ropers wrote:

    Richard, Thanks for your reply.  Would a "Drill Distance" error show

    up in DRC as just that?  The error I am getting in DRC is "Overlap"

    not "Drill Distance"

     

    Mike

     

     

    If a via that has the same name as the SMD's signal is placed on a

    SMD and there is a clearance value set for "VIA-SMD same signal" DRC

    will report an overlap error.

     

    --

    Mit freundlichen Gruessen / Best regards

    Richard Hammerl

      CadSoft Support -- hotline@cadsoft.de

      FAQ: http://www.cadsoft.de/training/faq/

     

     

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  • Former Member
    0 Former Member over 13 years ago in reply to Former Member

    Thanks - that setting fixed the problem!

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