100 µF bulk decoupling in a 2917 case
The TPSE107M025R0150V: The ±20% tolerance is standard for tantalum electrolytics and sets the derating floor — for a 12 V rail, the 25 V rating provides a 2:1 margin against surge. The 150 mOhm ESR at 100 kHz governs ripple current handling and self-heating. In a buck converter output filter, this ESR contributes to the output ripple voltage; the designer should verify the ripple current stays within the capacitor's rated limits at the switching frequency. The E case code denotes the standard height variant.
Temperature range and endurance
The 2000-hour endurance at 125°C is the rated life under full rated voltage and temperature — derating voltage or temperature extends usable life significantly.