22 µF, 25 V, 200 mOhm ESR — the bulk decoupling cap for tight rails
The TPSD226K025P0200: This is a molded tantalum capacitor from the KYOCERA AVX TPS series, rated 22 µF at 25 V with ±10% tolerance and a 200 mOhm ESR.
This cap is at home in an avionics LRU that sees -40°C cold-soak on the tarmac and 105°C near the engine bleed-air duct, or in a downhole tool that cycles from surface ambient to formation temperature. The molded case and 2917 footprint (7.30 mm x 4.30 mm, seated height 3.10 mm) keep the mechanical profile low enough for tight board stacks.
