T491D227K016AT from Kemet is a tantalum capacitor intended for designs that need stable capacitance in compact board space and proven performance from an established component family. Parts in this category are commonly considered for power rail filtering, decoupling, hold-up support, and general-purpose energy storage in industrial controls, communications hardware, embedded systems, and consumer electronics. Engineers often choose tantalum capacitors when volumetric efficiency, predictable electrical behavior, and long-standing market availability are important to the design approach. For new or sustaining designs, this device may be relevant where board density and reliable passive component sourcing matter. The current lifecycle status for T491D227K016AT is information not available, so design teams should confirm whether the part is active, NRND, or approaching obsolescence before committing it to production. RoHS compliance information is also not available in the provided data. Engineers and buyers should verify the latest environmental compliance details directly through Kemet documentation, authorized distribution listings, or the official datasheet.