220 µF bulk decoupling for 4 V rails
The TPSD227M004R0050: This TPS series molded tantalum capacitor delivers 220 µF at 4 V rated voltage — a common value for 3.3 V or 1.8 V rail bulk decoupling where the derating margin keeps the applied voltage below 80 % of the rating. The 50 mOhm ESR keeps ripple-current self-heating in check, which matters when the capacitor sits near a switching regulator output or a pulsed load like a GSM module.
Military temperature range, 2917 footprint
Use it in avionics power supplies, outdoor base stations, or downhole instrumentation where the ambient swings from arctic cold to engine-bay heat. The 7.30 mm x 4.30 mm footprint is standard for this capacitance/voltage combination; the 3.10 mm seated height fits most board stack-ups without clearance issues.