For one of our customers, we received a question about how to maintain plane flow with VIAs under a BGA when repositioning those VIAs. Especially with a fine VIA grid, it can take time to center the VIAs neatly between others. The challenge is that even the slightest movement of a VIA can cause the plane to be cut between two VIAs. From a design perspective, this is undesirable as it restricts plane flow.
So, is there a way to make the VIAs snap to the BGA grid, allowing them to be moved around under the BGA without cutting the plane? Absolutely. To demonstrate this, we’ve created a video showing how to align the VIA grid with the BGA grid anywhere on the board. Watch the video here.
