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Protrusion makes short in PCB. How to Avoid or Check Protrusion in Allegro PCB Editor.

MW202412035844 9 months ago

This pic is ETCH Gerber screenshot of my design.

Green is the part of the whole shape, red circle mark is the protrusion without connection caused by bigger void than via above the protrusion. This protrusion will bend and touch to adjacent vias in lamination like the small picture, short between shape protrusion and via. Like the last picture, blue protrusion bends and shorts to vias.

Please advise how to avoid protrusion or check when protrusion happen. Thanks!

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0 avant 8 months ago

In the Global Dynamic Shape Parameters, you can set a value in the "Suppress shapes less than" box.

This should get rid of the little slivers.
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0 avant 8 months ago

In the Global Dynamic Shape Parameters, you can set a value in the "Suppress shapes less than" box.

This should get rid of the little slivers.
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0 MW202412035844 8 months ago in reply to avant

Thanks for your reply! We have set this value so that the shapes could get into BGA narrow area between via to via, as you can see the narrow green shapes between each black square. But for the narrow shapes, one of be termination is not connected, that’s the protrusion which cause short.
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