Micro Spot Laser Welder - 0.25W


  • 30 Micron Spot Diameter with Fiber Delivery
  • Real-time Power Feedback
  • Precise Laser Welder Energy Control
  • Pulse Durations from 0.04ms
  • Peak Power from 0.04 - 0.5 kW
  • Exceptional Pulse-to-Pulse Power Stability
  • Air cooled, Single phase


Miyachi Unitek's LW5AM micro laser welder is designed to meet the stringent demands of FDA Process certification and provide reliable long-term performance for laser welding medical devices, implants, surgical tools and other small, delicate components. 

At 0.25W average power, the LW5AM micro laser welder is capable of a 30 micron spot diameter for precision welding applications and features real time power feedback, 20-segment pulse shaping, and IAD coated variable beam splitters. 



Specification :


LW5AM Micro-Welder

Input Power

200/220/240VAC +10% / -15%, 50/60Hz, single-phase

Maximum Peak Power

500W / 0.5ms

Maximum Peak Energy

100µm SI fiber: 0.12J / 200µm SI fiber: 0.25J

Average Output Power

100µm SI fiber: 0.24W / 200µm SI fiber: 0.25W

Pulse Width

60-500 µs (20µs increment)

Pulse Repetition Speed

1 – 30 pps

Input Voltage

200/220/240VAC +10% / -15%, 50/60Hz, 1Ø



No. of Schedules Available

32 schedules

Time/Energy Sharing*1

Single, energy share 2 – 3, time share 2 – 3

Applicable Optical Fibers

φ0.1mm SI optical fiber, φ0.2mm SI optical fiber

Cooling Method

Forced air cooling

External Communication

RS-485, Digital I/O

Size Inches H x W x D (mm)

27.2 x 12.2 x 26.2 (700 x 310 x 665)

Weight Lbs. (kg)

154 (70)






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