A desoldering pump, also called a solder sucker, is a hand-operated tool used to remove molten solder from electronic components and circuit boards. It usually consists of a spring-loaded plunger and a heat-resistant nozzle. When solder is heated until it becomes liquid, the pump is positioned over the solder and activated to create suction, pulling the molten solder into the tool.
The desoldering pump is particularly useful when replacing electronic components, correcting soldering mistakes, repairing PCBs, or removing wires from soldered connections. It allows unwanted solder to be removed quickly without requiring expensive equipment. Using a pump can also help free component leads and holes in a circuit board so that a new component can be installed easily.
To use it, first heat the solder joint with a soldering iron until the solder melts. Place the nozzle of the desoldering pump close to the molten solder and press the release button to suck the solder into the chamber. After removing the pump, inspect the joint and repeat the process if necessary. The nozzle and internal chamber should be cleaned regularly to maintain good suction and reliable operation.