The TAJT685M010RNJ is a molded tantalum capacitor from the TAJ series, rated 6.8 µF at 10 V with ±20% tolerance. The 4 Ohm ESR sets the ripple current ceiling — in a 10 V rail decoupling application, the self-heating from ripple current stays within the package limits if the RMS current is kept below the calculated value from the ESR and the maximum power dissipation of the 1411 case.
The molded case construction provides mechanical stability across the range without the moisture ingress risk of uncoated chips.
