The TPSC686K006R0150: This is a 68 µF molded tantalum capacitor rated at 6.3 V with a 150 mOhm ESR. The capacitance and voltage pair it for bulk decoupling on a 3.3 V or 1.8 V supply rail, where the 150 mOhm ESR keeps the ripple voltage below 10 mV for a 500 mA load step.
KYOCERA AVX lists this part as Active.
