Active production — 220 µF, 2.5 V, 150 mOhm ESR
The TPSB227M002R0150 is a molded tantalum capacitor from KYOCERA AVX's TPS series, rated at 220 µF with ±20% tolerance and a 2.5 V voltage rating. Its 150 mOhm equivalent series resistance (ESR) is the key parameter for ripple handling and transient response in low-voltage DC rails. The 150 mOhm ESR rating means this part can handle higher ripple current than a standard tantalum of the same capacitance — useful for output filtering on a 1.8 V or 2.5 V switching regulator where the ripple current heats the cap. The ESR floor sets the self-heating ceiling at a given RMS current.
The 1411 (3528 Metric) case size, size code B, measures 3.50 mm x 2.80 mm with a seated height of 2.10 mm max.
No direct pin-compatible second source confirmed from other manufacturers. The TPS series is KYOCERA AVX's own molded tantalum platform; a cross-shop candidate would need the same case code B, 220 µF, 2.5 V, and ESR near 150 mOhm to match the BOM position without re-spinning the layout.