SMD
Preparing centroid files for pick-and-place machines
An accurate centroid file is required for a smooth pick-and-place start. This article reviews common mistakes and export standards.
Centroid export format
Part name, coordinates, and rotation must match BOM and silkscreen.
- Consistent coordinate units
- Separate top and bottom
- Remove duplicate rows
Machine setup
Correct feeders and nozzles are essential for small packages.
- Board height definition
- Low-speed first article
- Approved program stored
Verification before mass run
Run one fully inspected board before full production.
- Compare with reference file
- Document allowed deviations
- Prepare for production run