What this TAJ tantalum capacitor is for
The TAJT155M035RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, with 1.5 µF capacitance and 35 V rated voltage. The ±20% tolerance is standard for tantalum electrolytics; the 5.2 Ohm ESR means it is best suited for bulk storage and decoupling on moderate-impedance rails rather than high-ripple switching supplies.
It fits avionics, downhole instrumentation, satellite payloads, and other mission-critical boards where the ambient swings past 85 °C. The molded case and surface-mount 1411 (3528 Metric) footprint simplify assembly on standard reflow lines.