2.54mm Jumper Cap Header Shunt

Many boards and modules expose configuration options as a row of pin headers rather than a switch, expecting a small jumper cap to be moved between positions to select a setting - a boot mode, a voltage level, an enable/disable option. This cap does exactly that job, sliding over two adjacent 2.54mm pins to close an electrical connection between them, with the connection easily changed by moving the cap to a different pin pair.

Gold-plated phosphor bronze contacts keep contact resistance low (20mΩ max) and resist corrosion over repeated insertion cycles, and a 3A current rating covers genuine configuration-signal duty rather than just token continuity. A wide -40°C to 105°C operating range and 1000V AC/DC withstand voltage give real margin for both hobbyist and more demanding embedded applications.

Common uses are selecting jumper-configurable settings on development boards and modules, temporarily bridging two header pins for testing or debugging, and any project using pin headers as a physical configuration-selection interface rather than a software setting.