Bulk cap for the 35 V rail — what the 250 mOhm ESR means
The TPSE476M035R0250 is a 47 µF molded tantalum capacitor in the TPS series, rated 35 V with a 250 mOhm ESR. That ESR figure is the one that decides how much ripple current the part can handle before self-heating becomes a derating issue — at 250 mOhm, it's a general-purpose bulk cap for decoupling or hold-up on a 35 V rail, not a low-ESR filter cap for a switching regulator output. The 2917 case (7343 metric) and size code E footprint are standard — the land pattern matches the common 7.3 x 4.3 mm body with a 4.3 mm seated height. It's a drop-in for any board already laid out for a 2917 tantalum.
Temperature range and tolerance — the practical limits
Operating from -55°C to 125°C, this cap covers industrial and automotive-adjacent environments — the 125°C ceiling is the upper limit for under-hood or near-engine-bay locations, though the voltage derating curve at high temperature should be checked against the actual rail voltage. It's a bulk storage part, and the 20% band is fine for that role.
It's a standard catalog part in the TPS series, available through the usual distribution channels. The molded case and tape-and-reel packaging (cut tape option) suit both prototype and production volumes.