Via Fanout For BGA

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   Add option to add fan out for BGA in footprint itself with options via size, trace size, etc.

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mahmoodv99 Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 16 Jan 2016 Status: Offline Points: 93	Post Options Post Reply Quote mahmoodv99 Report Post Thanks(0) Quote Reply Topic: Via Fanout For BGA Posted: 10 May 2016 at 10:38pm
	Add option to add fan out for BGA in footprint itself with options via size, trace size, etc.



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5716	Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Posted: 15 May 2016 at 9:13am
	This feature is better to do in the CAD tool. Many CAD tools have automatic via fanout and if it doesn't, you need to ask the CAD vendor to add that feature into the CAD tool. Vias in a PCB Footprint library part become Pins and the BGA pad and via connecting line become Associated Copper. This makes the library part size very big. We tried this once and spent a lot of time creating it, but it was a disaster. It sounds like a good idea, but you should manually try to do it and put the resulting part in a PCB layout to test it. Then you will see that it's impossible to fanout BGA's in the library part. Also, most BGA's have unused pins and if those pins have vias, it blocks routing channels and bottom side capacitor placement.
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