Point to point selective soldering, also referred to as sequential soldering, is used for the plated through-holes (PTH) on a PCBA: the joints are soldered one after another, from underneath the board. Our Ersa ECOSELECT 2 works at 295 °C under nitrogen. Its single-point solder nozzle sits in a servo-driven X/Y/Z positioning system, with a positioning accuracy of ±0.25 mm. In our setup, a magazine loader feeds the boards into the ECOSELECT 2 automatically, so the machine runs in line. Read more [Picture source: S&Q Europe B.V. on linkedin.com]
