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  3. Help creating footprint for SMA clamp

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Help creating footprint for SMA clamp

bdc66a938f164d
bdc66a938f164d 10 hours ago

I am new to Cadence products. I want to create a footprint for [this connector](https://www.pasternack.com/sma-female-vertical-launch-pcb-connector-pe45458-p.aspx)

Pasternack 
SMA Female Connector Clamp Attachment Vertical Launch PCB, Removable Stripline Launch
Product ID: PE45458

The ground pin has a hole in the middle, which apparently is a huge issue for Allegro. I have been for two weeks already trying different approaches with no luck. Any help will be greatly appreciated.

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  • John T
    0 John T 2 hours ago

    Hi BDC, sorry to read you are struggling with this still. 

    The two suggestions I have are to create two pins out of each pad. I have seen this implemented for some high speed connectors. See below image example for a surface bnc type, for which there are two separate shapes overlapping to create this.

      

    The second idea is use the donut type pad design which has a hole inner diameter. This can be placed in the symbol dra but each pin could be surrounded by a static shape already containing the necessary void. These shapes can be assigned to the net. Here is a mock up example I made: 

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  • DavidJHutchins
    0 DavidJHutchins 2 hours ago in reply to John T

    Before the 'DONUT' pad type existed, we would create a shape symbol with an inner arc connected to an outer arc with line segments spaced 0.02 mils apart...

    I can't upload an image, so below is the 'show element' of the shape:

    LISTING: 1 element(s)
    
    
                 < SHAPE >
    
    
           class         ETCH
           subclass      TOP
    
    
      element is on a dummy net
      Number of connections: 0
    
    
      Shape is solid filled
      Area:   0.0118  (sq in)
    
    
    Exterior boundary: 
      segment:xy (0.01 -12.50) xy (0.01 -62.50) width (0.00) 
      arc seg:xy (0.01 -62.50) xy (-0.01 -62.50) width (0.00) 
        center-xy:  (-0.00 -0.00) radius (62.50)   CCW
      segment:xy (-0.01 -62.50) xy (-0.01 -12.50) width (0.00) 
      arc seg:xy (-0.01 -12.50) xy (0.01 -12.50) width (0.00) 
        center-xy:  (0.00 -0.00) radius (12.50)   CW
    
    
      Number of voids: 0
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