The TAJS154K050RNJ: This is a KYOCERA AVX TAJ series molded tantalum capacitor — 0.15 µF, 50 V rated, ±10% tolerance, in a 1206 (3216 Metric) surface-mount case. The 16 Ohm ESR at 25 °C is the number that matters for ripple handling: at 50 V and 0.15 µF, this part is more at home in decoupling or timing circuits than in high-ripple bulk filtering.
TAJS154K050RNJ carries an active product status from KYOCERA AVX. Availability confirmed at RFQ.
Footprint and fit for a 1206 layout
1206 case size (3.20 mm x 1.60 mm), seated height 1.20 mm max. Manufacturer size code S — the standard 1206 tantalum footprint with a 0.50 mm pad overlap on each side handles the reflow profile.