Bulk decoupling with low ESR
The TPSD477K006R0045: The 45 mOhm ESR (Equivalent Series Resistance) is the standout parameter here — it keeps ripple heating low in power-supply output filters and point-of-load decoupling, where a standard tantalum with higher ESR would run hotter and derate the usable ripple current. The ±10% tolerance is typical for bulk tantalum capacitors used in decoupling roles; the actual capacitance at the operating DC bias will shift down slightly, but the margin is adequate for most power-rail smoothing jobs. The wide operating temperature range of -55°C to 125°C means this part fits into environments where the board sees thermal cycling — think outdoor telecom, industrial control, or under-hood automotive modules.