Sunstone PA250i Micro TIG Welder

Overview

The Sunstone PA250i is a high-power pulse arc (micro TIG) welding system engineered for demanding micro-welding tasks that require strong weld energy with precise control. Delivering up to 250 joules of pulse energy, the PA250i produces clean, controlled welds across a wide range of conductive materials, from delicate foils to robust bus bars and tabs with minimal heat-affected zones. 

Designed for professional engineers, production floors, automated lines, and R&D environments, the PA250i combines advanced digital control, programmable profiles, and versatile configuration options for industrial-grade micro-welding performance. 

Shipping Notice

This product is not eligible for free shipping.

• Flat Freight Rate: $349 (discounted rate)

Ideal For

• Battery tab and bus bar welding

• Aerospace sensor and connector assembly

• Automated production lines and PLC integration

• Electronics and electromechanical prototyping

• High-throughput micro-welding environments

Key Features

• Up to 250 joules of pulse energy for strong, versatile welds across conductive materials.

• Advanced digital control panel with adjustable weld parameters.

• Three configuration options: stylus only, weld head, or CNC/robotic integration.

• PLC-ready with multiple I/O for seamless automation.

• CNC compatibility for high-volume production workflows.

• Digital waveform visualization and profile storage.

• Small, localized heat-affected zone for minimal impact on surrounding materials.

Applications

• High-current conductive join welding

• Battery pack and tab attachment

• Automated weld cells in production environments

• Precision microelectronic assembly

• Aerospace component assembly

Specifications

What’s Included

• Sunstone PA250i Micro TIG Welder

• Standard welding cables and connections

• Power cord

• Operating documentation

Warranty

This product includes Sunstone’s standard 2-Year Limited Manufacturer Warranty, covering defects in materials and workmanship.

• Internal electronics and system components covered for 2 years

• Consumable parts covered under a 1-Year warranty

• All service and support provided by Sunstone’s U.S.-based technical team

Customer Resources

📄 Datasheet
📄 User manual
▶️ Video: Product Video
📧 Customer Support: Direct manufacturer assistance troubleshooting. Contact them at custservice@sunstonewelders.com | +1 (877) 786-9353

DO YOU NEED TRAINING?

Sunstone's training team is ready to help you master the PA250i Micro TIG Welder Visit Sunstone's Training Page to learn more.