Ripple current and ESR budget for a 470 µF bulk cap
At 470 µF and 4 V rated, the TPMD477K004R0035 delivers bulk decoupling for a 3.3 V or 1.8 V rail, but the 35 mOhm ESR sets the ripple current ceiling — the cap's self-heating is proportional to I² × ESR, so a 2 A ripple pulse dissipates 140 mW internally, which at 125 °C ambient leaves almost no margin before the part exceeds its rated temperature.
Package fit for a 2917 footprint
The 2917 (7343 Metric) molded case measures 7.30 mm × 4.30 mm with a seated height of 3.10 mm — the size code D body fits the standard tantalum footprint used across AVX and Kemet series, so a layout designed for a TPMD477K004R0025 accepts this part without a board spin.