A desoldering pump, also known as a soldering sucker or vacuum desoldering tool, is a hand-held tool used to remove excess or faulty solder from circuit boards and other electronic components. It consists of a cylindrical body with a spring-loaded plunger on one end and a nozzle on the other. To use the tool, the nozzle is placed over the excess solder and the plunger is pressed, which creates a vacuum that sucks up the molten solder into the body of the tool.

Desoldering pumps are commonly used in electronic repair and maintenance to remove faulty solder joints or to make room for new components to be soldered in place. They are an essential tool for any technician working on electronics, and are often used in combination with other soldering tools such as a soldering iron or soldering station. It is important to use a high-quality desoldering pump to ensure that it is reliable and effective at removing excess solder.