100 µF, 20 V, 400 mOhm — bulk decoupling in a 2917 E-case
The TAJE107K020RNJ: This is a molded tantalum capacitor from the TAJ series, delivering 100 µF at 20 V with ±10% tolerance and a 400 mOhm ESR.
KYOCERA AVX lists the TAJE107K020RNJ as Active.
400 mOhm ESR and the thermal budget
At 20 V and 100 µF, the self-heating from ripple current stays manageable in most decoupling roles, but a high-ripple SMPS output may need a higher-ESR derating or a polymer alternative. The molded construction handles board-level vibration better than conformally coated parts.