47 µF, 20 V, 150 mOhm ESR — the derating anchor
The TPSE476M020R0150: The 150 mOhm ESR is the parameter that governs ripple current capability and self-heating — at a given ripple current, the power dissipation (I² × ESR) determines the internal temperature rise, which must stay within the 125°C ceiling. Operating temperature spans -55°C to 125°C, covering the full industrial range and the under-hood automotive ambient envelope. The ±20% tolerance is standard for tantalum electrolytics; voltage derating to 50-60% of rated voltage is recommended for reliable operation in low-impedance circuits.
2917 case, E code — footprint and board-fit
This is a standard tantalum chip footprint — the pad layout matches the EIA 2917 land pattern, and the molded case provides mechanical stability during reflow. Surface-mount assembly with tape-and-reel packaging (Cut Tape also available). The molded construction offers better moisture resistance than conformal-coated parts, though standard MSL handling still applies.
Active lifecycle — no LTB risk
This part is suitable for ongoing production builds and new designs that require a 47 µF, 20 V tantalum in the 2917 case.