Sourcing a production-grade tantalum cap
The TPSB225K025R2500 is an active-production molded tantalum capacitor from KYOCERA AVX, carrying the TPS series designation. It is rated at 2.2 µF with a ±10% tolerance and a 25 V voltage rating, making it a fit for decoupling and filtering on 12 V or 5 V rails where the 25 V ceiling provides derating margin. The 2.5 Ohm ESR is the spec that governs ripple current capability and self-heating — a lower ESR would handle more ripple, but at this value the part is suited for general-purpose bypass and moderate-ripple applications where the thermal budget is not tight.
The molded construction gives it mechanical robustness against vibration and thermal cycling compared to conformally coated parts.
Housed in the 1411 (3528 Metric) / 1210 case with a size of 3.50 mm x 2.80 mm and a seated height of 2.10 mm, this B-size code part fits standard decoupling footprints.