Molded tantalum bypass — 10 µF, 16 V, 3 Ohm ESR in 1206
TAJA106M016RNJ is a KYOCERA AVX TAJ series molded tantalum capacitor in the 1206 (3216 Metric) case. It delivers 10 µF ±20% at 16 V rated, with a 3 Ohm ESR that sets the ripple-current ceiling and the high-frequency decoupling impedance.
ESR and temperature — the two numbers that size the part
The 3 Ohm ESR at 25 °C is the limiting factor for AC ripple current. A 100 kHz ripple of 200 mA pk-pk dissipates roughly 60 mW in the ESR — well within the 1206 case's thermal budget, but a 500 mA ripple pushes dissipation to 375 mW and the part self-heats above the 125 °C ceiling. Derate voltage by 50 % at 125 °C to stay inside the safe operating area; the full 16 V rating applies only below 85 °C.
Active production — no EOL clock on this BOM line
Listed as Active.