The ±20 % tolerance is typical for tantalum electrolytics; the actual capacitance at 25 V bias will measure near the low end of the band, so budget for 8 µF minimum in your derating calculation. The 1.8 Ohm ESR sets the self-heating limit — at 100 kHz ripple, the I²R loss raises the internal temperature above ambient, and the 125 °C ceiling is the sum of ambient plus self-heat.
Temperature range — avionics and downhole ready
The molded case (C-size, 2312 / 6032 Metric) keeps the part surface-mountable and reflow-compatible; the 2.80 mm seated height fits standard pick-and-place nozzles.