This paper aims to demonstrate the impact of automation – with the use of a robot – in the welding operation in a manufacturing process of electrical and electronic components, located at the Industrial Hub of Manaus. The adopted procedure was the experimental research and case studying, with documentary and bibliographic research with exploratory bias, with variability mapping using bivariate analysis model. The results indicate a high degree in the effectiveness of the robotic manipulator compared to manual operation, based on the variables analyzed, such as soldering time, total amount of applied solder, and dispenser’s speed and temperature, as well as total adherence to quality standards.