How to define an edge connector / gold finger

[FrankEagle]

I need to move the attached pad (composed of a ring and a top/bottom pad) on the edge of the PCB, but this is not compatible with the DRs and Fusion doesn't let me do it. 

Is there a way to define an edge pad that can bypass the distance rule from the board dimensions?

[jorge_garcia · Accepted solution]

Hello @FrankEagle,

I hope you're doing well. The easiest thing to do is to disable the copper/dimension check in the DRC. Go to DRC > Distances tab and set the copper/dimension value to be 0.

That should take care of it. Once you have it placed then make sure to set it back to whatever your board house can do.

Best Regards.

[FrankEagle]

Thank you.

[ryinWJL74]

Hi, 

I need to know how to define the edge pad / gold finger.  Please see the attached snip.

How do I do it in Fusion?

Thanks,

Robert

[jorge_garcia]

Hello @ryinWJL74 ,

The above suggestion is still valid, you can see examples of this type of connector in the con-pc library. If you don't have it in USE you can enable it by going to the library manager. Inside the con-pc library check out the AGP-SLOT component. 

The gist of it is that you draw the specialized board outline in the library and place the smd pads on that edge.

Let me know if there's anything else I can do for you.

Best Regards,

[ryinWJL74]

Thank you very much for your suggestion.

[rmessing-gpd]

How would you make a grounding pad on the edge of a board for sliding into a card slot?  I've tried with polygon pour but there is no option to remove solder mask from that polygon.  Do I have to create a surface mount pad to be the card slot edge?

[jorge_garcia]

Hello @rmessing-gpd ,

I hope you're doing well. So you can use the polygon to make the grounding pad. You then just draw the soldermask opening on top of it using another polygon on the top soldermask layer.

Let me know if there's anything else I can do for you.

Best Regards,

[rmessing-gpd]

@jorge_garcia Thanks for the reply.

How do I define the opening?  Polygon pour only allows top or bottom layer.  Drawing a Polygon shape using the drawing tool allows me to choose the solder mask layer but I don't see any option anywhere for making a solder mask opening.

[jorge_garcia]

Hello @rmessing-gpd ,

I hope you're doing well. Polyshape is the right command to use, whatever you draw on the soldermask layer IS a soldermask opening.

Let me know if there's anything else I can do for you.

Best Regards,

[rmessing-gpd]

@jorge_garcia Thanks for the reply

I applied a poly shape to the area on the soldermask top layer, where I need the opening.  If I `push to 3D PCB` I still see the solder mask (still green) in place.  I think this is why I feel this isn't working.

The bottom portion of the picture where the Soldermask shows is where I'd expect to see the area looking like the pads are for the 2 surface mount spots above it.  Instead I'm thinking that WYSIWYG is going to happen here on that edge.  Or is it that it just doesn't render when pushed to 3D?

[jorge_garcia]

Hi @rmessing-gpd ,

When you push to 3D make sure to check the stop geometry checkbox. Try it out and see if it gives you the right result. Remember that the source of truth is the gerbers and the 2D PCB.

Let me know if there's anything else I can do for you.

Best Regards,

[rmessing-gpd]

@jorge_garcia that worked thanks.