UV vs. Green vs. Fiber Laser: Which for What?
Shenzhen, China
Published: Jul 3, 2026
UV vs. Green vs. Fiber Laser: Which for What?
This is the decision that trips up most electronics manufacturers. Here’s a clear breakdown:
| Factor | UV Laser (355nm) | Green Laser (532nm) | Fiber Laser (1064nm) |
|---|---|---|---|
| Best for | PCB bare boards, delicate substrates | Copper marking, thin films | Metal components, IC packages |
| Thermal impact | Minimal (“cold marking”) | Low | Moderate to high |
| Copper absorption | Excellent | Good | Poor (reflective) |
| FR4/substrate safety | Excellent | Good | Risk of damage |
| Solder mask marking | Excellent | Good | Risk of burning through |
| Metal marking depth | Shallow | Moderate | Deep |
| Spot size | 15–50 μm | 30–80 μm | 50–100 μm |
| System cost | High ($8,000–$20,000) | Mid ($5,000–$12,000) | Low ($2,000–$5,000) |
