TAJA335K016SNJ — 3.3 µF 16 V tantalum in the 1206 case
This is a KYOCERA AVX TAJ series molded tantalum capacitor, 3.3 µF at 16 V with ±10% tolerance, in the 1206 (3216 Metric) case. The 5 Ohm ESR is the number to watch if you are using it for output filtering on a switching regulator — the ripple current rating is set by the ESR and the case's power dissipation limit, not the capacitance alone.
The molded case is the standard construction for this series — no conformal coating needed over the part itself.
This is a standard catalog part from KYOCERA AVX, so it is widely distributed.