10 µF, 25 V, 1.8 Ohm ESR — bulk decoupling for a 25 V rail
The TAJC106K025KNJ: This is a molded tantalum capacitor from the TAJ series, 10 µF at 25 V with ±10% tolerance — a standard bulk-decoupling value for a 25 V power rail in industrial or telecom equipment. Case size C (2312 / 6032 metric) is a common footprint for 10 µF at 25 V; the seated height max is 2.80 mm, which fits standard 1.6 mm PCB clearance envelopes.
Lifetime is specified as 2000 hours at 125°C with rated voltage applied — this is the accelerated life test condition. In a 85°C ambient, the expected service life is significantly longer, following the Arrhenius model typical for tantalum capacitors.
