The TAJY335K050RNJ: This is a 3.3 µF, 50 V molded tantalum capacitor in the standard 2917 (7343 metric) surface-mount case. The 50 V rating gives comfortable margin above a 48 V telecom bus or a 24 V industrial rail, and the ±10% tolerance keeps the BOM capacitance window tight. The 1.7 Ohm ESR is typical for a 3.3 µF / 50 V tantalum in this case size — it sets the ripple current capability and the self-heating under AC load. For a switching regulator output filter, check the ripple current against the ESR to stay within the power dissipation limit.
2917 case — standard footprint, no layout surprise
The 2917 (7343 metric) case measures 7.30 mm x 4.30 mm with a seated height of 2.00 mm max. This is a common tantalum capacitor footprint — the land pattern is well-documented and compatible with most reflow profiles. The manufacturer size code is Y.