Laser Soldering

PRECISION SOLDERING FOR INTRINCATE APPLICATIONS

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.

Our state-of-the-art process development lab is equipped with advanced laser soldering systems, ready for sampling and fine-tuning your manufacturing processes.

WHY CHOOSE LASER SOLDERING?

Accelerated soldering speeds.
Precise heat control with minimal spread.
Optimal performance with fragile components.

Laser soldering delivers superior connections, safeguards sensitive electronics, and boosts productivity, making it the preferred choice for modern electronics manufacturing

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.

Cooling: 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.

Both techniques ensure a secure solder joint but differ in their heat application—contact soldering uses a heated iron, while laser soldering uses a focused beam of light.

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.

Cooling: 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.

Both techniques ensure a secure solder joint but differ in their heat application—contact soldering uses a heated iron, while laser soldering uses a focused beam of light.

Pre-Heat: Before soldering, it's important to gradually warm up the components to prevent thermal shock. With a laser, the beam warms the joint in a controlled manner, ensuring the temperature rises evenly without stressing the components. Flux is still needed to help with bonding.

Heating: This is where the real action happens. In laser soldering, a precise laser beam heats the soldering area without touching it, reducing heat spread to nearby parts.

Post-Heat: Once the joint is hot enough, the solder melts and flows into place. With a laser, the solder paste or wire melts instantly under the beam, flowing into the joint without overheating the surrounding area.

Cooling: After the solder is applied, it needs to cool and solidify. In laser soldering, once the beam turns off, the joint cools quickly, forming a precise and reliable bond.

Advantages of
Laser Soldering

Contact vs Non-contact

Contact

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

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

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

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).

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

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).

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

OPTICAL SYSTEM

Optics: Focused and shaped via high-precision optical lenses
Energy Distribution: Factory-profiled to ensure uniform heating; regular power meter checks recommended

PRECISION & CALLIBRATION

Positioning Accuracy: Dependent on the robot platform used with the laser system
Recalibration: Requires recalibration approximately once a year; features an automated tuning function

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

COMPONENT LIFESPAN & MAINTENANCE

Laser Diode Lifespan: Approximately 25,000 hours of irradiation time
Maintenance: Annual recalibration with automated diagnostics for consistent performance

Certified Robots

Benchtop
Available in Contact and Laser.

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Gantry
Available in Contact and Laser.

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SCARA
Available in Contact and Laser.

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6-Axis
Available in Contact and Laser.

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Modules
Available in Contact and Laser.

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Certified Platforms

Twin-Table Benchtop
Available in Contact and Laser.

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Stand-Alone Gantry
Available in Contact and Laser.

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Twin-Table Gantry
Available in Contact and Laser.

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SCARA Cell
Available in Contact and Laser.

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Stand-Alone Cell
Available in Contact and Laser.

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Inline Cell
Available in Contact and Laser.

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AutoBlocks
Available in Contact and Laser.

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Software

AutoBlocks Operating System
Soldering Manager Software

AutoBlocks™ Operating System
AutoBlocks™ Operating System is Fancort’s software
platform for industrial automation technology.

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Sample Videos

Discover the Soldering Manager software

Soldering Manager is the leading software app to control your soldering operation; synced with FOS. With Soldering Manager, you can monitor the soldering robot's status and automatically collect and store process data.

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Video Demo 01
Video Demo 02
Video Demo 03

About

Industry: Aerospace/Electronics/Automotive/Medical
Application: Robotic Soldering.
Design: Fancort RAD (Robotic Automation Division)
Integrated by: Fancort RAD (Robotic Automation Division)

About

Industry: Aerospace/Electronics/Automotive/Medical
Application: Robotic Soldering.
Design: Fancort RAD (Robotic Automation Division)
Integrated by: Fancort RAD (Robotic Automation Division)

About

Industry: Aerospace/Electronics/Automotive/Medical
Application: Robotic Soldering.
Design: Fancort RAD (Robotic Automation Division)
Integrated by: Fancort RAD (Robotic Automation Division)

Robotic 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.

Laser Soldering

Laser Soldering

Laser Soldering 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.

LASER SOLDERING

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.

LASER SOLDERING

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.

LASER 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.

LASER SOLDERING

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.

LASER SOLDERING

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.

LASER SOLDERING

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.

LASER SOLDERING

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.

LASER SOLDERING

Twin Spot

Enables simultaneous soldering of two joints.

LASER SOLDERING

Area Laser

This laser can irradiate a wide area with uniform energy density. This enables selective SMT processes and simultaneous multi-point soldering.

LASER SOLDERING

Fiducial Correction

Revolutionize your robotic soldering with our cutting-edge Fiducial Correction Vision System, ensuring pinpoint accuracy and seamless precision based on fiducial marks.

LASER SOLDERING

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.

LASER SOLDERING

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.

LASER SOLDERING

Fixturing for robotic soldering fixtures

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.

LASER SOLDERING

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.

✅ LASER SOLDERING ADD-ONS
Achieve consistent solder quality with precision tools.
Enhance performance with optional feeders, preheaters, and soldering tip upgrades.

📞 Ready to get started? Contact us today!
Click the button below or call us now to learn how our add-ons can transform your operations.

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Where To Buy

Laser Soldering Process

Process

Laser Soldering Process

Laser soldering offers several benefits, including rapid soldering, minimal heat dispersion, and the ability to work with delicate components.
Laser soldering ensures high-quality connections, reduces the risk of damage to sensitive electronic parts, and enhances overall manufacturing efficiency. It's the go-to solution for achieving top-notch soldering results in modern electronics assembly.

Running cost comparison table

Contact

Iron tip

Heater element

Heater cable

Tube set

Needle

Laser

Tube set

Needle

Laser Spot Sizes

Laser Soldering Spot Sizes - Robotic Soldering with Robots

Laser Spot Shapes

Laser Diode Power Available

Laser diode with output of 45W, 75W or 130W (Dual head laser power up to 200W)

Saving maintenance time

comparison between contact soldering and laser soldering

New Laser Slim Head ULD-H4

ULD-H4 Slim Laser Head

For articulated robot/space saving, our new laser head comes with downsizing and lightening. Adaptable for UNIX-FR Series and Thermo Pro™

ULD-H4 (With ThermoPro) Straight Shape

Features

・With the slim laser head, the fiber can be extended sideways.
・Approximately 50% less volume and weight than the ULD-H3 laser head.

ULD-H4L (Without ThermoPro) L-Shape

ULD-H4 Application Examples

UNIX-FR Series

Scara Robot
With Coaxial non-contact Thermometer

UNIX-FR Series

Vertical articulated Robot
Laser Irradiation for any angle

Fancort GF Gantry

Gantry Robot
With space saving in-line layout design

ULD-H4 Laser Head to chose from

Laser head can be selected according to customer's line design and requirements.

ULD-H3-Z Laser Head

ULD-H3-Z

Variable beam spot size area laser. With zoom lens. Variable area laser spot size without changing working distance.

Variable beam size with area laser to match the target product. Preset Beam Size: 10 programs Available

Specs.

ULD-H3Z Application Examples

To Use Area Lasers for a Wide Variety of Applications.

To Change Beam Size Depending on the Location

FAQ

Q: What are the most common reasons to select laser soldering technologies?
A: Micro Soldering (0.02mm spot), non-contact (allows for reflow only), no iron tip consumables, automatic spot size change.

Q: Is laser soldering faster than contact soldering?
A: Laser soldering can be slightly faster because it eliminates some mechanical movement or when used only to reflow.

Q: Does Japan Unix maintain FDA safety approval to sell laser machines in the US?
A: Absolutely

Q: How are the laser positions programmed?
A: 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.

Q: Does Japan Unix offer pyrometer modulated power controls (power cruse control)?
A: Yes, Japan Unix is the leader in direct temperature measured laser control.

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Some of our customers

Fancort customers include the following NASA engineering schools: MIT, John Hopkins, JPL, U of NH, MN, NM, TX and AZ. We are also a major supplier to the national labs system: Sandia, Draper, Fermi and Los Alamos.