The TAJD336K025HNJ: The 900 mOhm ESR sets the self-heating floor: at the rated ripple current, the internal temperature rise stays within the derating curve for the 125°C ceiling. Molded case, size code D (7.30 mm x 4.30 mm footprint, 3.10 mm seated height) — the same land pattern serves multiple TAJ-series 33 µF / 25 V tolerance and ESR grades, so a BOM swap between ±10% and ±20% or between standard and low-ESR variants is a reel change, not a board spin.
Active lifecycle — no last-time-buy clock on this line item
Polarity and RoHS — what the board shop needs
Tantalum capacitors are polarised: the anode is marked with a stripe on the case body. Reverse bias beyond 1 V can cause catastrophic failure. The TAJ series is RoHS-compliant per the standard AVX material declaration; no exemption or conflict with lead-free reflow profiles.