68 µF bulk decoupling on a 25 V rail
The TPSE686K025H0125: This part is built for surface-mount assembly in the standard 2917 (7343 Metric) footprint, E case code. With a maximum seated height of 1.65 mm (0.065") and a 5.08 mm x 2.54 mm footprint, it fits into tight board stacks where a low-profile bulk cap is needed downstream of a regulator or on a power input bus.
ESR and ripple handling at 100 kHz
The 125 mOhm ESR at 100 kHz is the key loss figure for this part — it determines the self-heating under ripple current and the voltage ripple on the output rail. A lower ESR means less temperature rise in the capacitor body when smoothing switching-regulator ripple. The molded TPS series is a general-purpose low-ESR platform, not a low-leakage or high-reliability automotive grade. For bulk decoupling on a 25 V rail where the ripple frequency sits near 100 kHz, this ESR keeps the dissipation within the package rating.
Temperature range and board environment
Rated for -55°C to +125°C operation, the TPSE686K025H0125 covers industrial and some automotive under-hood ambient conditions — the full temperature band matters when the cap sits near a hot regulator or in an outdoor enclosure.