A solder pump is a tool used in electronics to remove excess solder from circuit boards. It typically consists of a cylindrical body with a plunger mechanism that creates a vacuum when activated. This vacuum sucks up molten solder, making it easier to correct mistakes or clean up soldered connections. Solder pumps are especially useful in PCB assembly and repair, where precision is crucial. They help ensure that components are properly soldered without creating bridges or shorts. Using a solder pump can improve the quality of electronic devices and extend their lifespan by preventing solder-related issues.