470 µF bulk cap with 25 mOhm ESR for low-ripple power rails
The TPMD477M004R0025: This is a molded tantalum capacitor from the TPM series, rated 470 µF at 4 V with a maximum ESR of 25 mOhm — the low ESR keeps the output ripple voltage down when used as a bulk decoupling cap on a 3.3 V or 1.8 V switching regulator output. The 4 V rating leaves about 20 % headroom above a 3.3 V rail — adequate for steady-state operation but tight if the rail sees transients above 4 V; a 6.3 V or 10 V rated part would give more margin.
The operating temperature spans -55 to 125 °C, so this cap can sit on an avionics power supply bus, a downhole instrument module, or a satellite payload regulator without derating for cold start or hot soak.