293D Series. The Vishay 293D series industrial grade TANTAMOUNT® Capacitors are solid Tantalum, surface mount with 100% matte tin terminations. The 293D series offers stable electrical parameters, high reliability and long service life; they are the suitable for use where volumetric efficiency is required.. Meets IEC specification QC300801/US0001 and EIA 535BAAC Anode (+ve terminal) marked by polarity band