330 µF, 16 V, 400 mOhm ESR — Molded Tantalum in E Case 2917
The 400 mOhm ESR at 100 kHz sets the ripple current ceiling — for a 100 kHz switching regulator output, the self-heating stays manageable as long as the RMS ripple current stays under 1.1 A. The E case (2917 metric, 7.30 mm × 4.30 mm footprint, 4.30 mm seated height) is a standard size for bulk decoupling on power rails and energy storage in portable or embedded systems.
The molded construction and tantalum anode deliver stable capacitance across the full range, though ESR rises at low temperature — budget extra margin for cold-start filtering. The 16 V rating should be derated by 50% for high-reliability designs (8 V max applied) to stay within the safe operating area over the full temperature sweep.