Active production — BOM-fit for new builds
The TPSR105M025R2500: This molded tantalum capacitor in the TPS series delivers 1 µF capacitance at 25 V rated voltage with a ±20% tolerance, packaged in the 0805 (2012 Metric) surface-mount footprint.
ESR and temperature — the real derating drivers
The 2.5 Ohm equivalent series resistance sets the ripple current ceiling — at 25 V and full temperature range, the I²R heating limits how much AC ripple the 0805 case can dissipate before the internal temperature rises above the 125°C maximum. Operating from -55°C to 125°C covers the full military temperature grade, but ESR increases at low temperature — expect the 2.5 Ohm figure to roughly double at -55°C, which matters for cold-start filter circuits.
0805 footprint and board integration
As a molded tantalum, the part has no exposed cathode on the bottom — the terminations are at the ends only, so the standard 0805 solder pad footprint applies without thermal-paddle considerations.