What the 175 mOhm ESR means for your rail
The TPSE336K025R0175: That ESR figure is the headline spec for a bulk capacitor on a DC-DC converter output — it determines how much ripple current the part can handle before self-heating becomes a derating issue. At 175 mOhm, this part sits in the standard range for a 33 µF / 25 V tantalum; it is not a low-ESR variant, so it is best suited for general-purpose decoupling and bulk storage where the ripple current stays under ~1 A RMS.
Case size, footprint, and board fit
The molded case is polarity-marked with a band on the positive end; the cathode is the larger pad on the bottom.
Temperature range and derating practice
Rated for -55°C to 125°C operation, the part covers industrial and extended-temperature environments. Standard tantalum derating guidance applies — run the applied voltage at 50% to 80% of the 25 V rating for best reliability, especially at the high end of the temperature range.