100 µF, 16 V, 900 mOhm ESR — bulk decoupling anchor
The TAJY107K016Y: Rated 100 µF at 16 V with 900 mOhm ESR, this molded tantalum handles the ripple current and transient energy in a power rail or DC-DC output stage. The ESR figure sets the self-heating under ripple — at 100 kHz, the 900 mOhm limits the RMS current to roughly 400 mA before the part exceeds its 125°C ceiling.
2917 (7343 Metric) — standard footprint, easy layout
The 2917 case code (7.30 mm x 4.30 mm x 2.00 mm max seated height) is a widely used molded tantalum footprint — compatible with common reflow profiles and second-sourced across multiple manufacturers. The size code Y matches the standard 2917 land pattern; no via-in-pad or special fan-out required.