10 µF, 10 V, 2.2 Ohm ESR — sizing the ripple current ceiling
The TAJK106K010RNJ: This is a 10 µF tantalum capacitor rated at 10 V with a 2.2 Ohm ESR — the ESR is the dominant loss term for a tantalum part in a power rail or decoupling role, determining how much AC ripple the capacitor can handle before self-heating shifts the capacitance.
Military temperature range — deployment context
The molded 1206 case with K-size code (1.0 mm max seated height) keeps the profile low — a board under a cover or between stacked PCBs can use this without clearance issues.