The TAJS475K006A: This is a 4.7 µF molded tantalum capacitor rated for 6.3 V DC in a 1206 (3216 Metric) package — the standard footprint for general-purpose decoupling on a 3.3 V or 1.8 V rail, with enough margin to stay below the 6.3 V ceiling. The 7.5 Ohm ESR is typical for a small-case tantalum at this capacitance; it limits the ripple current to roughly 200 mA RMS at 85°C, so keep that in mind if the cap sits on a switching regulator output with high AC content.
The ±10% tolerance is tight enough for timing or filter circuits; for bulk decoupling the 20% grade would also work, but this part gives you the tighter bin.