What this 0.1 µF tantalum does on the board
The TAJA104M050RNJ: This is a molded tantalum capacitor from the TAJ series, rated 0.1 µF at 50 V with ±20% tolerance — a standard value for bypass, coupling, or timing roles on a 12 V or 24 V rail where the 50 V rating gives 2× derating margin. The 1206 (3216 Metric) footprint fits a common PCB land pattern; the 3.20 mm × 1.60 mm body and 1.80 mm seated height keep the profile low enough for mezzanine card spacing.
ESR and lifetime at temperature
22 Ohm ESR at 100 kHz — this is the AC loss path for ripple current.
Listed as Active — no EOL notice or last-time-buy pressure on this line.