Molded tantalum chip — 1.5 µF, 20 V, 1206 case
The TAJS155M020RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 1.5 µF with ±20% tolerance and a 20 V working voltage. Housed in a standard 1206 (3216 Metric) surface-mount package, it measures 3.20 mm x 1.60 mm with a seated height of 1.20 mm — a common footprint for decoupling and filtering on dense PCBs.
Temperature range and ESR — fit for harsh environments
Maximum ESR is 5.4 Ohm — a spec that matters for ripple current handling and output noise in switching regulator filter stages; the higher ESR compared to ceramic caps means the self-heating under ripple must be checked against the thermal budget.