What the 500 mOhm ESR means for your rail
The TAJV157K016RNJ carries a 500 mOhm ESR — that is the internal resistance the capacitor presents to ripple current. In a 150 µF, 16 V molded tantalum, this ESR sets the self-heating limit: at a given ripple current, the power dissipated (I²R) must stay within the part's thermal budget or the capacitor ages faster.
Active production and availability
Surface-mount 2924 (7361 Metric) case, size code V. The 7.30 mm x 6.10 mm footprint with a 3.75 mm seated height is a standard tantalum chip size — the same pad layout serves the TAJ V-case family, so swapping capacitance or voltage within the series requires no board change.