The TAJA155K025ANJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 1.5 µF with ±10% tolerance and a 25 V DC voltage rating. It comes in a standard 1206 (3216 Metric) surface-mount package, making it a drop-in fit for general-purpose decoupling, filtering, and energy storage on dense PCBs.
The 7.5 Ohm ESR (measured at 100 kHz) sets the self-heating under ripple current — a 100 mA ripple dissipates about 75 mW, which is manageable in the 1206 body but should be checked against the derating curve for ambient above 85°C.
