10 µF, 20 V, 2.1 Ohm ESR — B-size molded tantalum
The 2.1 Ohm ESR at 100 kHz defines the ripple-current ceiling and self-heating limit in a bulk-decoupling or output-filter position — a design rule: keep the RMS current below ~400 mA at 85°C to stay inside the derating curve.
No AEC-Q100 grade is claimed — this is an industrial/defence-grade tantalum, not an automotive PPAP part.
Sourced through independent distribution; RFQ confirms current lead time and lot availability.
1411 (3528 Metric) footprint — B case
The 3.50 mm x 2.80 mm body with 2.10 mm seated height (B code) uses the standard 1210 / 3528-10 land pattern. The molded case is polarity-marked with a band; reverse-voltage application will short the part — verify orientation during pick-and-place programming.