Analysis of advantages of laser soldering technology

 Nowadays, with the improvement of IC chip design level and manufacturing technology, SMT is developing in the direction of high-density and high-reliability miniaturization. At present, the pin center distance of QFP has reached 0.3mm, and the number of pins of a single device can reach more than 576.This makes the traditional welding methods such as gas phase reflow welding, hot air reflow welding and infrared reflow welding easy to occur adjacent lead solder joints "bridge" when welding such components with fine spacing.

 In addition, in the field of traditional wire welding, the progress of IC technology, on the other hand, has promoted the development of wire processing technology and technology. For example, in the traditional connector field, the further miniaturization of PCB and terminal size makes the traditional Hot Bar solder and electric soldering iron solder process bottleneck. In addition, due to the traditional HOT BAR welding and electric soldering iron welding and other contact welding processes, there is a hidden danger of damage to the wire and transmission performance, in the field of wire transmission quality, speed requirements, manufacturers try to avoid the use of these methods to weld.

                                Samples of laser constant temperature soldering

At the same time, the emergence of some new MEMS devices, such as the mobile phone camera module, makes the laser soldering of electronic components get rid of the traditional concept of plane welding, and develop towards three-dimensional space welding. For such devices, contact processing methods such as electric soldering iron are easy to interfere, and non-contact and high-precision processing methods are required.

Therefore, more and more people have carried out research on new welding. Among them, Songsheng photoelectric laser tin welding technology with its unique heat source properties, extremely fine spot size, local heating characteristics, to a large extent to help solve such problems, therefore, it has also received more and more manufacturers' attention.

                         Semiconductor thermostatic monitoring welding head

Songsheng photoelectric constant temperature laser soldering system can provide continuous 915 nm infrared laser output. The product is composed of CCD coaxial alignment system and semiconductor laser, can import a variety of format files, so as to achieve the purpose of accurate welding, and because the system has the temperature feedback and CCD coaxial alignment function, can effectively ensure the constant temperature welding of welding points and precision parts of the accurate alignment, so as to ensure the effective yield in mass production. The product is mainly suitable for PCB spot welding, solder, metal, non-metal material welding, sintering, heating, etc., with the characteristics of real-time and high-precision control of the temperature of the welding object, especially for highly sensitive high-precision solder processing.