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Copper covering mounting hole issue

jatins

Hi 

Sorry if this has been asked before, but my issue is as follows:

Copper ONCopper OFF

I defined some non-plated through hole/slots in padstack editor. The 'regular pad' was set to None/less than hole diameter so as not to have any copper being shown around/over the hole. But as you can see above, when i turn on the copper on Top layer, these holes get covered by Copper which is not desired. Soldermask is not a problem as i made it bigger than the hole. Do i need to define antipad or seomething similar to avoid copper being shown over the holes?

Thanks

  • steve

    I'm assuming you have copper flooded over the hole on the TOP layer? You may need a keepout area either drawn as part of the Mechanical Symbol or use the KEEPOUT option when editing the pad.

  • jatins
    in reply to steve

    Here's how they are currently defined:

    6mm hole5.3mmhole

    One hole has no copper pad defined, while the other one has copper pad size much less than the hole diameter.

  • jatins
    in reply to jatins

    I believe the rootcause is as follows:

    Actually, i am preparing database for Panelization which means that i am defining a dra file which is actually a panel of 100x100mm square. In this panel(dra file), i am adding some circular non-plated mounting holes(shown above) at the corner of this panel. This panel is 4 layer board and when i pour the copper over this panel, it is by default poured as static copper instead of dynamic copper which leads to the problem i guess. Tried to change static copper to dynamic, but it seems that i cant choose dynamic as this option is greyed out(inactive). 

  • jatins
    in reply to jatins

    Now,tried both options of using KEEP OUT area in pad file and defining Route Keepout>ALL in dra file. But, none of them helps.

    The only way i guess is to:-

    • somehow change the copper fill from Static to dynamic. Which i have not found a way to do yet.
    • Perform Shape> Manual Void> Circular for each layer manually to avoid copper being shown around the desired holes.
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