47 µF, 20 V, 200 mOhm ESR — the ESR sets the ripple ceiling
The TPSE476K020R0200: The 200 mOhm ESR is the number that governs ripple current handling — at a given frequency, the I²R heating limits the AC current the cap can pass before the internal temperature rise exceeds the derating curve. For a 20 V rail, the 20 V rating provides about 50 % derating margin against a 12 V or 15 V bus, which is standard practice for tantalum reliability. Operating temperature spans -55°C to 125°C, covering both cold-start and under-hood ambient without a separate derating step. The 2917 (7343 Metric) case with size code E is a common footprint across multiple tantalum suppliers, so the PCB layout is not locked to a single source.
Active lifecycle — no EOL watch needed
This means the part is suitable for new designs and long-term BOM stability; no last-time-buy planning is required at this time. Sourced through independent distribution channels. The Tape & Reel (TR) packaging suits automated pick-and-place for production runs; Cut Tape (CT) is available for prototyping.