3.3 µF, 20 V — Molded tantalum for bulk decoupling
The TAJT335M020RNJ is a molded tantalum capacitor from KYOCERA AVX's TAJ series, offering 3.3 µF capacitance with ±20% tolerance at a rated voltage of 20 V. The 3 Ohm ESR is a key parameter for ripple current handling and self-heating — in a 12 V rail decoupling application, the ESR limits the AC ripple current to roughly 70 mA RMS before the internal temperature rise becomes a concern.
The molded case provides mechanical stability across the range without the moisture sensitivity of conformally coated parts.
This is a standard BOM line that can be dual-sourced with other TAJ-series 3.3 µF, 20 V molded parts from the same manufacturer — confirm the case size code T (3.50 mm x 2.80 mm footprint) matches your PCB land pattern before substituting.
Surface mount 1411 (3528 Metric) — footprint check
Packaged in a 1411 (3528 Metric) molded case, size code T, measuring 3.50 mm x 2.80 mm with a seated height of 1.20 mm max. No MSL rating is listed — typical molded tantalum capacitors are MSL 1, but confirm with the manufacturer's latest documentation for your specific process.