Quality Standards for SMT Assembly
Defective PCBAs post-inspection necessitate repair, employing either manual soldering with constant temperature irons or hot air welding. Soldering iron usage demands completion within 5 seconds, ideally 3, with preparation including coating with solder and precautions against oxide layer formation. Hot air welding on a repair workbench suits QFP, BGA, PLCC, and intricate components, necessitating specific nozzles and adherence to operational manuals, featuring temperature curves akin to reflow furnaces in advanced models like the company’s SMD-1000.