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Package to Package spacing

Lennie

My footprint's are created so the part outline is created on the PLACE_BOUND layer. We create this so the correct outline is used for  IDF file generation.

This layer is also used by the package to package DRC. I have not found a way to change the preset value from "0" package to package clearance. Since this places the footprints next to each other  then we cannot build the

board. Is there any way around that ?

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  •  Lennie,

    You have mentioned you are using the IDF option to import into a mechanical 3D tool like Pro E. If this is the case, have your ME person create a mapping file to point your board parts to 3D models in their system. So, no matter how you have your place_bound set to it will not matter. Your 10 mil oversize around your parts is fine. All the parts mapped to a 3D model will be rendered. For the ones not mapped the place_bound size and z height will be used. The 3D models will be more actuate obviously. Now you can decide what parts need 3D models to observe interference in tight situations. The use of the Place_bound is really for DFA requirements not for 3D studies especially in tight situations in my opinion.

    Cheers  

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  •  Lennie,

    You have mentioned you are using the IDF option to import into a mechanical 3D tool like Pro E. If this is the case, have your ME person create a mapping file to point your board parts to 3D models in their system. So, no matter how you have your place_bound set to it will not matter. Your 10 mil oversize around your parts is fine. All the parts mapped to a 3D model will be rendered. For the ones not mapped the place_bound size and z height will be used. The 3D models will be more actuate obviously. Now you can decide what parts need 3D models to observe interference in tight situations. The use of the Place_bound is really for DFA requirements not for 3D studies especially in tight situations in my opinion.

    Cheers  

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