The T491B106K020AT is a surface mount device (SMD) tantalum capacitor manufactured by Kemet. It features a capacitance of 10uF and a rated voltage of 20V. The ESR (equivalent series resistance) of the device is 2.1ohms and its capacitance tolerance is 10%. It is housed in a 1411 package and features COTS (commercial off-the-shelf) construction. The capacitor is designed for use in both commercial and military grade applications, and is RoHS compliant.