Low ESR for power rail decoupling
The TPMY227M006R0030: The 30 mOhm ESR on this 220 µF tantalum means it can handle higher ripple currents than standard tantalums — useful for smoothing the output of a buck converter or as bulk decoupling on a processor core rail where the ripple current budget is tight.
The Y case code is the standard footprint for this capacitance and voltage rating.
