DC Barrel Power Jack Connector 5.5x2.1mm

Most DC wall adapters end in a standard 5.5x2.1mm barrel plug, and this jack is the matching female connector that receives it - designed to solder directly onto a PCB rather than dangling loose on wires, so a project's power input becomes a clean, mechanically secure panel connection rather than exposed solder joints. That PCB-mount design is what makes it suitable for a finished enclosure rather than just a bench prototype.

Rated for 30V at 1A, it comfortably handles the vast majority of small wall-adapter voltages used in hobbyist projects (5V, 9V, 12V being the most common), and low contact resistance combined with a wide -30°C to 70°C operating range means it holds a reliable connection across the temperature swings a project might see in different installation environments.

Common uses are permanent DC power input jacks on finished project enclosures, replacing a loose or damaged barrel jack on an existing device, and any build wanting a proper panel-style power connector rather than exposed wire leads for its DC input.