A desoldering pump, also known as a solder sucker, is a tool used in electronics to remove solder from a circuit board. It typically consists of a plastic body with a spring-loaded mechanism that creates a vacuum when activated. This vacuum sucks up molten solder, allowing for the removal of components or repairs on the board. Using a desoldering pump is straightforward. First, the solder is heated with a soldering iron until it becomes liquid. Once the solder is molten, the user quickly positions the pump over the solder and activates it, which pulls the solder into the pump. This tool is essential for anyone working with circuit boards or electronic components.