Capacitance and voltage rating for the rail
The TPSR225K006R7000: The ±10% tolerance keeps the capacitance within 1.98 µF to 2.42 µF, tight enough for output filtering on a low-noise regulator or for decoupling a mixed-signal IC where the bypass cap value matters for the PSRR notch.
ESR and the 0805 footprint
Equivalent series resistance is 7 Ohm — this is the figure that governs ripple current handling and self-heating. For a 2.2 µF cap at 6.3 V, 7 Ohm ESR is typical for a small-case tantalum; it limits the RMS ripple current to roughly 200 mA before the internal temperature rise exceeds 10°C. In a decoupling role on a 100 kHz switching regulator, the ESR dominates the impedance at resonance. This footprint is standard for low-profile PCB layouts — the 1.20 mm height clears most board-to-board spacing constraints in stacked assemblies. The molded case provides mechanical protection and consistent dimensions for pick-and-place.
Temperature range and operating environment
The TPS series is a general-purpose tantalum line, not a low-ESR or high-reliability military grade, but the temperature range suits it for engine-bay or outdoor telecom equipment where the ambient sees 105°C. Surface-mount assembly with tape-and-reel packaging — the reel quantity is the standard 0805 count, suitable for automated placement in volume production.