10 µF at 2.5 V — decoupling a low-voltage rail
The TAJR106M002RNJ: This is a 10 µF molded tantalum capacitor rated for 2.5 V DC, built in the 0805 (2012 metric) case. It belongs to the TAJ series from KYOCERA AVX, a general-purpose line that covers most board-level bypass and bulk-storage needs on low-voltage digital rails. The 4.5 Ohm ESR is typical for a tantalum of this size and voltage rating. It limits the AC ripple current the cap can handle and contributes to the voltage ripple on the rail — a factor to budget when the cap sits on a switching regulator output or a high-speed digital supply.