2.2 µF at 16 V — derating for reliability
The TAJT225K016RNJ: Rated 16 V with a capacitance of 2.2 µF and ±10% tolerance. For tantalum capacitors, the standard derating practice is to operate at no more than 80% of rated voltage — here that means a 12.8 V rail is the practical ceiling. The 6.5 Ohm ESR at 100 kHz sets the ripple current limit; at 16 V and 2.2 µF, the self-resonant frequency is typically in the low-MHz range, which keeps this part suited for bulk decoupling and filtering rather than high-frequency bypass.
Molded case, military temperature range
The molded construction provides mechanical robustness and moisture resistance compared to conformal-coated chips. The 1411 (3528 Metric) footprint — 3.50 mm x 2.80 mm x 1.20 mm seated height — is a standard size that matches many existing PCB layouts.