15 µF, 50 V, 600 mOhm ESR — bulk decoupling for 12 V to 48 V rails
The TAJE156K050RNJ: This is a 15 µF tantalum capacitor rated at 50 V with 600 mOhm ESR, built in the molded TAJ series from KYOCERA AVX. The 50 V rating gives comfortable derating margin on a 12 V rail (4× headroom) and still holds 2× margin on a 24 V bus — critical for tantalum, where voltage derating directly reduces field failure rates from surge events.
Size code E in 2917 footprint — board layout constants
The manufacturer size code E maps to the 2917 (7343 Metric) package: 7.30 mm × 4.30 mm footprint, seated height 4.30 mm max. This is a standard tantalum case size — the land pattern matches the generic 7343-31 footprint in most PCB libraries, so no custom pad geometry is needed. The molded body provides consistent planarity for reflow soldering; no special handling beyond standard MSL precautions.