The 5.5 Ohm ESR at 100 kHz is on the high side for a 1 µF cap — it limits ripple current handling to around 200 mA RMS at 25°C before self-heating eats into the 2000-hour lifetime at 125°C. This part is fine for bulk decoupling on a slow rail or as a timing cap, but I wouldn't put it on a switching regulator output where ripple current is continuous.
2312 case — footprint and board fit
This is a 2312 (6032 Metric) molded case, 6.00 mm x 3.20 mm footprint, seated height 2.80 mm max. The size code C means it's a standard low-profile tantalum — fits under a 3 mm clearance. Surface-mount reflow profile per JEDEC, no special baking needed if kept in the original moisture-barrier bag.