The TPSB335M025R2000 is a molded tantalum capacitor from KYOCERA AVX's TPS series, rated at 3.3 µF with a ±20% tolerance and a 25 V DC voltage rating.
2 Ohm ESR — ripple current and self-heating ceiling
For a given ripple current, the power dissipation is I² × ESR; at 25°C ambient, the part's thermal rise stays within limits only if the ripple current stays below the calculated maximum. This matters when replacing a lower-ESR tantalum — the higher ESR may require derating the AC load or adding a parallel ceramic to shunt the ripple.
The molded case construction (Type: Molded) provides mechanical robustness and moisture resistance compared to conformally coated tantalums.
There is no last-time-buy window or obsolescence pressure — the part remains a valid design-in candidate for new builds.
B-case 1411 / 1210 footprint
The capacitor uses the B-case size per the manufacturer size code, with a 1411 (3528 Metric) / 1210 footprint. The body measures 0.138" x 0.110" (3.50 mm x 2.80 mm) with a seated height of 0.083" (2.10 mm). This is a standard tantalum land pattern — it cross-references directly to other B-case tantalums from Kemet, Vishay, or Panasonic without a PCB layout change.