330 µF, 10 V, 50 mOhm ESR — bulk decoupling in tight thermal budgets
The TPSD337M010R0050: The low ESR keeps ripple heating under control — important when the capacitor sits near a processor or FPGA core rail where board temperature already pushes 85°C. The ±20% tolerance is standard for tantalum electrolytics and works for bulk decoupling where the exact capacitance matters less than the ESR ceiling.
The 50 mOhm ESR at 100 kHz is the key parameter for filtering switching-regulator ripple. A 330 µF cap with this ESR yields a capacitor impedance corner around 10 kHz — below that, the bulk capacitance dominates; above it, the ESR sets the ripple attenuation. For a 500 kHz buck converter, expect ~15 mV ripple per amp of load transient with this part alone. Tantalum capacitors have a voltage derating guideline: for a 10 V rated part, keep the applied DC voltage at or below 7 V for reliable operation over the full temperature range. This is not a spec limit but a reliability best practice for polymer and MnO2 tantalum types.