22 µF at 16 V — ESR and temperature range
The TPSW226K016R0500: The 500 mOhm ESR sets the ripple current handling and the self-heating under AC load — for a 100 kHz buck output filter, that ESR contributes roughly 0.5 W of loss at 1 A ripple, which the 2312 package dissipates into the board copper. Operating temperature spans -55°C to 125°C, covering the full industrial range and the under-hood automotive ambient. The capacitance change over this band is typical for tantalum — expect about ±10% shift from the 25°C value, with ESR rising at cold and dropping at high temperature.
The size code W matches the standard EIA 2312 outline — the pad layout follows the manufacturer's recommended land pattern for this case code. Surface-mount reflow profile per J-STD-020; the molded body is compatible with lead-free soldering temperatures.