The TAJC156K010TNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated 15 µF at 10 V with ±10% tolerance. The 2 Ohm ESR at 100 kHz sets the ripple current ceiling and self-heating under AC load — for a 15 µF decoupling cap on a 100 kHz switching regulator output, the ESR dominates the impedance at that frequency and limits the ripple voltage the capacitor can absorb before internal temperature rise becomes a derating factor.
Case size C — 2312 footprint for automated assembly
Housed in a 2312 (6032 Metric) molded case, size code C, measuring 6.00 mm x 3.20 mm with a seated height of 2.80 mm max.