Bulk decoupling for a power rail — what the ratings tell you
The TPSC336K016R0300: At 33 µF and 16 V, this TPS-series molded tantalum cap sits in the sweet spot for 5 V or 12 V rail filtering — the 16 V rating gives 33% derating margin on a 12 V rail, staying inside the recommended 50% derating for tantalum caps in high-reliability designs. The 300 mOhm ESR sets the ripple-current ceiling: at 100 kHz, the cap can handle roughly 700 mA RMS before internal self-heating exceeds the datasheet limit, which matters for output filtering on a buck converter or as a local bulk cap near a switching regulator.
It belongs in avionics power supplies, downhole instrumentation, satellite bus decoupling, or engine-bay ECUs where the ambient hits 105°C and the case temperature climbs higher under ripple current. The molded construction and general-purpose feature set mean it's a standard off-the-shelf tantalum — no special screening, but the wide temp range is the differentiator.