1.5 µF, 20 V, 5.4 Ohm ESR — molded tantalum in 1206
The TAJS155K020RNJ: This is a KYOCERA AVX TAJ series molded tantalum capacitor, 1.5 µF ±10%, rated 20 V, with a maximum ESR of 5.4 Ohm. The 1206 case (size code S) sits 1.20 mm high, making it a common footprint for decoupling and filtering on 12 V or 20 V rails.
1206 footprint — rework-friendly, common pad layout
The 1206 (3216 metric) case is a standard size for hand or hot-air rework — the 3.20 mm x 1.60 mm pad footprint gives good thermal access without needing a preheater. The molded body has clear polarity marking — the anode band is visible after placement, reducing tombstone risk during reflow.