What wattage laser is used for laser soldering?

What wattage laser is used for laser soldering?

"What is the power range for laser soldering?" – This question has drawn significant industry attention. Songsheng Optoelectronics provides professional insights on laser wattage selection for soldering applications. Let's explore the technical specifications.

Factors Influencing Laser Soldering Power

The selection of laser soldering power is not fixed, but requires comprehensive consideration of various factors. First, different materials have different melting points, thus requiring different welding power levels. For example, titanium alloys have a higher melting point than aluminum alloys and naturally demand greater power for soldering. Second, the thickness of the material also affects power selection. Generally, thicker materials require higher power to ensure joint integrity and strength. Additionally, the soldering geometry and speed are critical factors. Complex soldering geometries may require higher power to achieve uniform heating, while faster soldering speeds necessitate greater power to deliver sufficient heat in a shorter time.

General Power Range for Laser Soldering

Based on industry experience and practical applications, laser soldering power typically falls within the range of 200W to 1000W. This range is sufficient to meet the requirements of most common materials and soldering applications. However, it should be noted that this is only a general guideline, and specific power selection needs to be further refined based on the influencing factors mentioned above.

How to Select the Appropriate Laser Soldering Power

When selecting laser soldering power, it is recommended to follow these steps: First, identify the type and thickness of the material to be welded, which serves as the basis for determining the preliminary power range. Next, consider the welding geometry and speed requirements to make appropriate power adjustments. Finally, conduct actual welding tests and fine-tune the power based on the test results to achieve optimal welding performance.

In summary, selecting the appropriate laser soldering power is a complex process that requires comprehensive consideration of multiple factors. By gaining an in-depth understanding of the influencing factors, referring to the general power range, and following a reasonable selection process, we can choose the most suitable laser soldering power for practical applications, thereby ensuring maximum welding quality and efficiency.

Songsheng Constant-Temperature Laser Soldering System Module Diagram

Low-Power Laser Soldering

Power Range: Typically from a few watts to several tens of watts, commonly in the range of 10-100W.

Applications: Suitable for soldering small electronic components that are heat-sensitive and require high precision, such as chip pin soldering on smartphone motherboards and PCB soldering inside Bluetooth earphones. These components are small in size, and low-power lasers can precisely control heat input to avoid overheating damage while achieving high-precision soldering and ensuring joint quality.

Medium-Power Laser Soldering

Power Range: Generally between 100-500W.

Applications: Often used for soldering slightly larger electronic components with faster heat dissipation or higher joint strength requirements, such as interface soldering on computer graphics cards and PCB soldering in automotive electronic modules. Medium power provides sufficient energy to fully melt the solder and achieve good bonding with the base material while maintaining soldering speed.

High-Power Laser Soldering

Power Range: Exceeds 500W and can reach over 1kW.

Applications: Primarily used for soldering larger metal components or in industrial production scenarios requiring rapid soldering, such as power module soldering in large electronic equipment and batch soldering of industrial control PCBs. High-power lasers can deliver significant heat in a short time to improve efficiency but require more precise process control to ensure soldering quality.

Songsheng Optoelectronics 976/980nm Water/Air-Cooled Constant-Temperature Semiconductor Laser Diagram

Songsheng Optoelectronics has independently developed 976/980nm constant-temperature semiconductor lasers specifically for laser soldering and plastic welding applications. Featuring a PID algorithm with ultra-fast response (15μs), the system effectively prevents solder joint burnout.

The integrated closed-loop temperature control system utilizes infrared sensors to monitor and dynamically adjust the heating zone temperature in real-time, maintaining precise thermal stability during processing. Available in both air-cooled and water-cooled configurations to meet diverse customer requirements, with standard power outputs ranging from 10W to 2000W (including 10W, 100W, 200W, 300W, 500W, 1000W, and 2000W options).

Key Technical Advantages:

• Wavelength-optimized for soldering applications (976/980nm)

• Industry-leading thermal regulation response (15μs)

• Multi-cooling configuration flexibility

• Scalable power options from micro-soldering to industrial applications