The TPSB227K002R0600 is a 220 µF molded tantalum capacitor from KYOCERA AVX's TPS series, rated at 2.5 V with a 600 mOhm ESR. This combination suits it for bulk decoupling on low-voltage power rails — the ESR directly sets the ripple current rating and self-heating in a switching regulator output filter.
Footprint and board layout fit
Housed in a molded 1411 (3528 Metric) / 1210 case, size code B, measuring 3.50 mm x 2.80 mm with a seated height of 2.10 mm max. The 600 mOhm ESR means the ripple current heats the part internally — the PCB copper pad area under the capacitor should follow the KYOCERA AVX recommended land pattern to keep the temperature rise within limits.