PCB selective conformal coating — ±0.25 mm edge accuracy, 100% AOI
In-line selective coater with UV cure and downstream AOI for industrial-control board assemblies.
- Client
- Confidential — Industrial Electronics
- Location
- Massachusetts, USA
- Capabilities
- Robotics Integration · Machine Vision
The challenge
Industrial electronics contractor had recurring field failures from coating on connectors. Manual masking added 8 minutes per board and rework was 12%.
What we built
PVA Delta 8 selective coater with vision-aligned board fiducials, UV cure tunnel, and a Koh Young Zenith AOI verification downstream. Recipe library auto-loads from the MES per board barcode.
Key equipment
- PVA Delta 8 selective coater
- PVA Magnum UV cure
- Koh Young Zenith2 AOI
- Cognex DataMan 280
From the floor
Illustrative image — representative of project scope; customer-identifying details have been removed.
Results
Edge accuracy holds ±0.25 mm on all 9 board variants, rework dropped from 12% to 1.5%, and field returns on coating defects have been zero in the last 4 quarters.
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