47 µF, 16 V, 80 mOhm ESR — TPS series D-case tantalum
The KYOCERA AVX TPSD476M016R0080 is a molded tantalum capacitor in the TPS series, standardized for general-purpose bulk decoupling and output filtering where the 80 mOhm ESR defines the ripple-current capability and the self-heating limit. Its 47 µF capacitance at 16 V fits the mid-range of the D-case footprint — the 2917 (7343 Metric) package that matches standard 7.3 mm × 4.3 mm board land patterns.
ESR and the D-case thermal budget
The 80 mOhm ESR is the spec that governs how much ripple current the part can handle before self-heating becomes a derating issue. At 100 kHz the impedance is dominated by this resistance — a 1 A RMS ripple current dissipates 80 mW, which for a D-case body translates to a roughly 8-10°C temperature rise above ambient when the board copper is typical. The designer who needs more headroom for higher-frequency ripple will look for a lower-ESR polymer or a larger case; this part's ESR sits in the mid-range for conventional MnO2 tantalum in the D size. The D-case height of 3.10 mm seated fits within standard 3.2 mm board-to-shield clearance — a point worth verifying if the assembly is stacked on the opposite side of a PCB with a bottom-side component height limit.
Active — sourcing the TPSD476M016R0080
No pin-compatible direct alternative is listed on the manufacturer's cross-reference — the TPS series has multiple case sizes and voltage codes, but each capacitor's ESR and voltage rating are specific to the order code.