4. Electronic Control Unit (ECU) and Sensor Marking
Shenzhen, China
Published: Jul 3, 2026
4. Electronic Control Unit (ECU) and Sensor Marking
What it is: Modern vehicles contain 50–100+ electronic control units and sensors, each requiring part numbers, revision codes, and date/lot tracking.
How lasers are used:
- 20W fiber lasers for metal ECU housings
- UV lasers for plastic-encapsulated sensors and connectors
- Small DataMatrix codes (2–4mm) for space-constrained components
- Marking time: 1–3 seconds per unit
Why laser:
- No mechanical contact that could damage sensitive electronics
- Precise placement on crowded PCBs and small housings
- Compatible with automated production lines
