What this capacitor's ratings mean for your rail
The 400 mOhm ESR is the number that matters most for bulk decoupling: it sets the ripple current self-heating limit.
It fits avionics power supplies that cold-soak at -55°C on the tarmac and hit 125°C near an engine bay heat source. The molded case keeps the tantalum element sealed against humidity — no conformal coat required for most indoor or outdoor telecom boards.
You can design this into a new BOM today and reorder against production runs without a PCN watch.