Panel Fiducials and Their Importance
Global and local fiducials let the placement machine register each board and correct for stretch and rotation.
Global vs local
Global for the panel, local for fine-pitch devices.
Design rules
Three per board, clear of copper and at stable spacing.
Process payoff
Good fiducials cut placement error and rework.
Key Takeaways
Key Takeaways
- Use global and local fiducials.
- Three clear marks per board.
- They cut placement error directly.
