Soft beam soldering uses a radiation source in the short-wave infrared range, which is often a halogen bulb. The infrared light is optically focused and directed onto the solder joint. The required soldering heat is generated by absorption of the radiation at the solder joint. Diameters of the focal spot are typically between 2 and 3 mm. Due to the different absorption of the short-wave IR radiation, heating problems can occur on bright or reflective surfaces. Special adhesive tapes can again be used to achieve good IR absorption on the component surface.

Overview