1.5 µF, 35 V, 4.5 Ohm ESR — the ESR sets the ripple ceiling
The TAJC155M035RNJ: This is a molded tantalum capacitor from the TAJ series, rated 1.5 µF at 35 V with a ±20% tolerance. The 4.5 Ohm ESR is the practical limit for ripple current handling — at 100 kHz, the self-heating from ripple current through that ESR sets the derating curve. For a 35 V rail, the 1.5 µF value is typical for local decoupling on a lower-power analog or logic supply, not for bulk energy storage.
Military temp range — avionics, downhole, satellite
The molded case and surface-mount 2312 (6032 Metric) footprint — size code C — keep the same board layout across commercial and high-rel builds.