Fancort & Japan Unix bring you cutting-edge Laser Soldering Robot Technology powered by Japan UNIX—renowned as the global leader in laser soldering solutions. With pinpoint accuracy down to a 0.1mm spot size, laser soldering enables unparalleled precision, tackling challenges that conventional methods cannot address.
Precision
Laser Soldering
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Robotic Soldering by Japan Unix › Laser Soldering
Why Choose Laser Soldering?
Laser soldering delivers superior connections, safeguards sensitive electronics,
and boosts productivity—making it the preferred choice for modern electronics
manufacturing.
Accelerated Soldering Speeds
Precise Heat Control
Fragile Component Compatible
Laser Soldering Process
Pre-Heat
In both processes, the temperature is gradually raised to prevent thermal shock to sensitive components. Flux is applied to clean the surfaces and promote better bonding.
Heating
For contact soldering, a heated iron tip is used to transfer heat to the joint, melting the solder. In laser soldering, a focused laser beam is activated to rapidly heat the solder and components, ensuring precise control over the temperature to avoid damage.
Post Heat
Solder is applied to the joint in both methods. In contact soldering, the molten solder fills gaps and forms a solid connection. In laser soldering, the solder melts and flows into place, creating a strong bond without overheating surrounding areas.
Cool-Down
The iron tip or laser is removed, and the joint is allowed to cool, solidifying the solder and ensuring a reliable electrical and mechanical connection.
- Laser Soldering Specifications & Capabilities
Specifications
PAD SIZE COMPATIBILITY
Minimum Pad Size: 0.7mm square or 1.4mm x 0.7mm rectangular
Maximum Pad Size: 11mm square or 13.8mm x 3.5mm rectangular
OPTICAL SYSTEM
Optics: Focused and shaped via high-precision optical lenses
Energy Distribution: Factory-profiled to ensure uniform heating; regular power meter checks recommended
SPOT SIZE ADJUSTMENT
Minimum Spot Size: 0.2mm diameter
Maximum Spot Size: 3.5mm diameter
Spot Size Adjustment: Programmable with multi-step control (up to 10 steps per laser shot)
Dynamic Spot Size: Multi-phi spot size can adjust between 1mm and 3mm on the fly (custom heads are not available for other spot ranges at this time).
PRECISION & CALIBRATION
Positioning Accuracy: Dependent on the robot platform used with the laser system
Recalibration: Requires recalibration approximately once a year; features an automated tuning function
LASER TYPE & OUTPUT
Type: Laser Diode (Lasider, 940nm wavelength)
Available Power Options: 45W / 75W / 130W
Effect on Solder Materials: No adverse effects; compatible with most solder materials
MONITORING & FEEDBACK
In-process Monitoring: Equipped with both pyrometer-based thermal feedback and soldering manager tools for quality control
Inspection Options: Supports real-time inspection for thermal and solder joint integrity through external monitoring tools
MATERIAL COMPATIBILITY
Ideal for FR4, tinned, pre-fluxed, and gold-plated pads
Solder Types: Supports all solder alloys, including lead-free
Thermal Sensitivity: For heat-sensitive components, masking or lighter-colored materials is recommended to reduce absorption (as the laser targets dark surfaces).
COMPONENT LIFESPAN & MAINTENANCE
Laser Diode Lifespan: Approximately 25,000 hours of irradiation time
Maintenance: Annual recalibration with automated diagnostics for consistent performance
THERMAL CONTROL & SOLDERING PROCESS
Localized Heating: Reduces thermal shock compared to contact methods
Maximum Temperature: 380°C localized heat (optimal for FR4 substrates)
Ramp-up and Cool-down Rates: Approximately 5mm/sec for both heating and cooling phases, ensuring minimal impact on joint integrity
Programmable Thermal Control: Preprogrammable with up to 10 temperature steps per cycle
Advantages of Laser Soldering
Contact Soldering
Possible Stress
- Physical contact to the substrate
- Flux residue (carbide)
Dead Space
- It is necessary to secure space for the tip and solder wire feed.
Solder Amount
- There is a certain amount of solder that is brought to the wet surface of the tip.
Laser Soldering
Possible Stress
- No physical contact
- No carbide
Dead Space
- It is necessary to secure just solder wire feeding space
- Solder paste
- Any type of preform are approachable
Solder Amount
- Fed solder properly amounts
Certified Robots & Platforms
Certified Robots - Available in Contact and Laser
Benchtop
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Gantry
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SCARA
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6-Axis
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Modules
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Benchtop
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Gantry
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SCARA
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6-Axis
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Modules
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Certified Platforms - Available in Contact and Laser
Twin-Table Benchtop
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Stand-Alone Gantry
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Twin-Table Gantry
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SCARA Cell
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Stand-Alone Cell
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Inline Cell
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AutoBlocks
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Types of Applications
- Laser Soldering
THROUGH-HOLE COMPONENTS
- Precise heat application without affecting nearby parts.
- Consistent solder fill in plated through-holes.
- Cleaner process vs. wave solder (no overflow, no masking).
WIRE-TO-PAD / WIRE-TO-BOARD
- Strong mechanical/electrical bond.
- Perfect for automotive, EV batteries, and medical leads.
- Eliminates operator variability from manual soldering.
SURFACE-MOUNT PADS
- Perfect for miniaturized electronics (consumer, medical).
- Uniform solder volume = fewer defects.
- Localized heating avoids reflowing surrounding parts.
CONNECTORS / MULTI-PIN ROWS
- Uniform soldering across multiple pins in one cycle.
- Faster cycle time than point-to-point methods.
- Handles both high- and low-power connectors reliably.
FINE-PITCH IC LEADS
- No solder bridging at 0.3–0.5 mm pitch.
- No tip wear = stable process over thousands of joints.
- High repeatability critical for automotive/aerospace standards.
SHIELDS & LARGE PADS
- Twin-spot or oval beams manage larger solder areas.
- Reliable thermal and ground connections.
- Reduces risk of cold solder joints on heavy copper boards.
Key Benefits of Laser
Laser soldering offers many benefits for automated soldering applications, including no physical contact with the component and reduced risk of carbide contamination. Unlike traditional contact soldering, laser soldering requires only the solder wire feeding area to be properly secured, while solder paste and various types of solder preforms can also be used depending on the application. Precise control of solder feeding helps deliver the correct amount of solder, supporting consistent, repeatable solder joints and reliable automated soldering processes.
Soldering Manager Software (For Laser)
The Laser Soldering Manager Software from Japan Unix provides advanced monitoring and data management for automated laser soldering systems. Designed for robotic soldering applications, it continuously monitors equipment status and automatically collects key process data, including laser operation, temperature, solder feed, production cycles, and maintenance records. Manufacturers can visualize soldering data, identify process trends, track irregularities, and improve process stability and quality. With data capture, historical records, and connectivity to external devices and factory networks, Soldering Manager supports smart manufacturing, process traceability, and Industry 4.0 integration for high-precision automated laser soldering.
Laser Soldering
Add-ons
Laser soldering add-ons expand the capabilities of robotic systems by providing components such as high-precision laser modules, cooling systems, vision alignment, and safety enclosures. These tools ensure accurate, non-contact soldering with minimal thermal impact on sensitive components. Additional features like flux dispensing and process monitoring enhance consistency and quality, making laser soldering add-ons ideal for industries requiring advanced soldering solutions, including aerospace, medical devices, and high-density electronics.
Sample Videos
Browse Our Add-Ons
Standard Feeder
The "Standard Feeder" from Japan Unix is typically used in robotic soldering systems to automate the process of feeding solder wire to the soldering tip. Available in High-Precision Version.
Clean Cut Feeder
The feeder’s notching technology reduces flux dispersal and solder balls, preventing manufacturing issues like flux splatter. Available in High-Precision Version.
Thermo Pro
Non-contact thermometer to control temperature. In addition to the traditional management items for laser soldering (output, time, etc.), the incorporation of Thermo Pro™ makes it possible to manage and control the temperature during soldering.
Twin Spot
Enables simultaneous soldering of two joints.
Multi-phi
Variable laser beam spot diameter soldering system. Laser beam spot diameters are adjustable without moving. The variable spot diameters allow ideal soldering outcomes for diverse component shapes or various land patterns.
Area Laser
This laser can irradiate a wide area with uniform energy density. This enables selective SMT processes and simultaneous multi-point soldering.
Solder Wire Preheater
Preheats solder wire to minimize solder balls and flux dispersion caused by sudden heat shock during soldering. It is also effective at reducing cycle time.
Fiducial Correction
Revolutionize your robotic soldering with our cutting-edge Fiducial Correction Vision System, ensuring pinpoint accuracy and seamless precision based on fiducial marks.
Traceability
Enhance traceability in manufacturing and logistics by providing accurate and reliable data capture, ensuring that each product or component can be tracked through every stage of the production process.
AOI Vision Sensor
High-Performance Vision Sensor with AI capabilities.
1. Presence/Absence detection of features, patterns, edges, and circles.
2. Ethernet communication with TCP/IP, Profinet, ethernet/IP, SLMP, and FTP for saving data.
Airgun Preheater
Serves an essential role in preparing components and surfaces before soldering. Reducing thermal shock, improving solder flow, preventing cold solder joints, enhancing flux activation, and protecting sensitive components.
SVX Solder Paste Dispenser
Ideal for dispensing all medium to high viscosity pastes, epoxies, and abrasive compounds in dot and bead patters. The SVX can dispense dots as small as 0.005in in diameter.
PMX 1212 Preheater
Used to heat parts or materials to a specific temperature before further processing, such as soldering, coating, or assembly. This preheating process helps improve the efficiency and quality of subsequent manufacturing steps.
Custom Fixturing
Specifically designed to hold, support, and position parts or assemblies during operations like machining, soldering, or inspection. Tailor made fixturing to ensure repeatability for your process.
Enhance Your Soldering Operations with Premium Add-Ons!
Unlock the full potential of your robotic soldering systems with our advanced Contact Soldering Add-Ons and Laser Soldering Add-Ons. Designed to elevate precision, efficiency, and reliability, these accessories seamlessly integrate into your workflow to meet even the most demanding production requirements.
Frequently Asked Questions
What are the most common reasons to select laser soldering technologies?
Micro Soldering (0.02mm spot), non-contact (allows for reflow only), no iron tip consumables, automatic spot size change.
Is laser soldering faster than contact soldering?
Laser soldering can be slightly faster because it eliminates some mechanical movement or when used only to reflow.
Does Japan Unix maintain FDA safety approval to sell laser machines in the US?
Absolutely.
How are the laser positions programmed?
Japan Unix was the first company to develop laser soldering more than a decade ago with the patented direct line-of-sight teaching camera that allows you to look directly through the laser beam. This makes teaching easy and avoid inaccuratie due to angle distortion.
Does Japan Unix offer pyrometer modulated power controls (power cruse control)?
Yes, Japan Unix is the leader in direct temperature measured laser control.
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• SUPPORT
Online Support
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PLATFORMS (LASER)
Stand-Alone Cell
Stand-Alone Gantry
Twin-Table Cell
Inline Cell
ADD-ONS (LASER)
Standard Feeder
Clean Cut Feeder
Thermo Pro
Multi-phi
Solder Wire Preheater
Traceability
Airgun Preheater
PMX 1212 Preheater
Twin Spot
Area Laser
Fiducial Correction
AOI Vision Sensor
SVX Solder Paste Dispenser
Fixturing