Actions
Forum Thread Details
  • State Not Answered
  • Replies 2 replies
  • Subscribers 177 subscribers
  • Views 342 views
  • Users 0 members are here
Related

polygon in device

Former Member

I made a PCB design in eagle 5.12 with a device that contains a polygon (rank=7). When loading this PCB in eagle 7.3 I received an error that ranking is obsolete on devices. The polygon is connected to gnd.

 

The problem is the default rank (and not changable) is 0 and thus creating a gap between the ground plane and the pad.

 

How to connect the pad to gnd (with no thermals)?

 

good.png is intended use and bad.png is what eagle 7.3 comes up with..

Attachments:
image
image
  • 0

    sj aak wrote on Thu, 04 June 2015 10:06

    I made a PCB design in eagle 5.12 with a device that contains a

    polygon

    (rank=7). When loading this PCB in eagle 7.3 I received an error that

    ranking is obsolete on devices. The polygon is connected to gnd.

     

    The problem is the default rank (and not changable) is 0 and thus

    creating a gap between the ground plane and the pad.

     

    How to connect the pad to gnd (with no thermals)?

     

    good.png is intended use and bad.png is what eagle 7.3 comes up with..

     

    --

    To view any images and attachments in this post, visit:

    http://www.element14.com/community/message/151638

     

    Attachments:

    good.png

    bad.png

     

     

    Eagle now has custom pad shapes.

    Read the manual and the help for a fuller understanding.

     

    In short, change your library package so the polygon encompasses that

    center pad. The polygon will then be part of the pad and pick up the signal

    name of the pin, which for your example will be gnd.

     

    HTH

    Warren

     

     

    --

    Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

     

  • 0

    On 04.06.2015 00:06, sj aak wrote:

    I made a PCB design in eagle 5.12 with a device that contains a polygon

    (rank=7). When loading this PCB in eagle 7.3 I received an error that

    ranking is obsolete on devices. The polygon is connected to gnd.

     

    The problem is the default rank (and not changable) is 0 and thus

    creating a gap between the ground plane and the pad.

     

    How to connect the pad to gnd (with no thermals)?

     

    good.png is intended use and bad.png is what eagle 7.3 comes up with..

     

    You don't show the part polygon outline here, or even the pads, but

    unless its defined with 4 pins, I suspect the polygon is not enclosing

    the middle of the 3 pin. If you modify it to enclose it, it should pick

    up being gnd and fill like you want.

    Also, if this is the case, the "good" design gives you drc errors, while

    if enclosed, it will not.

     

    If you have a 4 pad design, I guess the thermal pad just needs to be

    invoked.