A desoldering tool is a device used to remove solder from electronic components on a circuit board. It helps in repairing or replacing parts without damaging the board. Common types include desoldering pumps, which suck up molten solder, and desoldering braid, which absorbs solder through capillary action. Using a desoldering tool is essential for electronics enthusiasts and professionals when working with soldering projects. Proper desoldering techniques can prevent damage to sensitive components and ensure a clean workspace, making it easier to install new parts or make modifications to existing circuits.