68 µF, 16 V — bulk decoupling for 12 V rails
The TAJF686K016RNJ is a 68 µF molded tantalum capacitor rated at 16 V, ±10% tolerance, in the 2312 (6032 Metric) case size. It is part of the TAJ series from KYOCERA AVX, a general-purpose line widely used for bulk decoupling, filtering, and hold-up capacitance on power rails up to 12 V nominal. With an ESR of 400 mOhm at 100 kHz, this part handles ripple current in switching regulators without excessive self-heating. The 16 V rating provides 33% headroom on a 12 V rail, which is standard practice for tantalum capacitors to avoid inrush stress.
Molded case, 2312 footprint — layout fit
The 2312 (6032 Metric) case measures 6.00 mm x 3.20 mm with a seated height of 2.00 mm max. This is a common tantalum chip size; the footprint matches standard 2312 land patterns. The molded package is compatible with reflow soldering and tape-and-reel handling.