1500 µF bulk decoupling at 2.5 V
The TPSD158K002R0100: This is a molded tantalum capacitor from the TPS series, rated 1500 µF at 2.5 V with ±10% tolerance. The 100 mOhm ESR keeps ripple voltage low on a 2.5 V core or I/O rail — a typical DDR memory or low-voltage ASIC supply. The molded construction gives consistent mechanical dimensions and good moisture resistance compared to conformal-coated parts.
The 2.5 V rating is tight for a 2.5 V rail — derating guidelines for tantalum capacitors typically recommend 50% voltage margin (1.25 V max applied) for reliability in high-stress environments. Confirm your operating voltage against the derating curve in the datasheet.