ESR and decoupling fit
The TPSC105K050R2500: The 2.5 Ohm ESR is the key constraint for power-supply decoupling. At 1 µF and 50 V, this capacitor's impedance at switching frequencies above a few hundred kHz is dominated by the ESR, not the capacitance — it will not provide low-impedance bypass for a fast digital rail. Better suited to analog filtering, timing circuits, or bulk storage where the series resistance is a known design variable and the 50 V rating buys headroom.
Molded C case in 2312 (6032 Metric) footprint, 6.00 mm x 3.20 mm, seated height 2.80 mm. The molded construction gives mechanical protection against vibration and moisture ingress, though it is not hermetically sealed.
The TPS series is a broad molded-tantalum family; no single-source risk flagged. Availability confirmed at RFQ.