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Stream Out Dielectric Vias

Dmtor

Hello,

I am new to Allegro and trying to create a GDS file representing the conductors in the PCB design. Using the stream out functionality I can get the etch and vias for each conductor layer, but I also need the vias traveling through the dielectric, so I can build a 3D model of the conductor geometry.

If I write a conversion file that maps a GDS layer to each conductor layer's vias I can't separate the vias traveling upwards and downwards into the two adjacent dielectric layers. The vias also do not show up in dielectric layers.

How can I create a GDS stream layer that describes the vias in that dielectric layer?

Regards,

D

  • CadAce2K

    My engineers read the GDS file(s) into their simulation tool and simply re-gen the via definitions in their tool. I've never been asked to create via structures as you've described. Sorry.

  • Joewi

    Name your Dielectric layers in the stackup...DE0, DE1.

  • Dmtor
    in reply to Joewi

    I have named them and they appear in the visibility side window, but the vias do not appear in the layout when I select them. For some reason the bottom dielectric layer does show its vias correctly

  • Joewi
    in reply to Dmtor

    make sure your padstacks has the dielectric pad defined the same size as the drill.

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