The TAJB475M020RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 4.7 µF capacitance with ±20% tolerance and a 20 V DC voltage rating. The 3 Ohm ESR is a key parameter for ripple current handling. A 4.7 µF cap with 3 Ohm ESR will self-heat under ripple; check against the application's ripple budget.
The molded construction provides mechanical robustness against vibration and thermal cycling.
Package and PCB footprint
Housed in a 1411 (3528 Metric) / 1210 case, size code B, with dimensions 3.50 mm x 2.80 mm and a seated height of 2.10 mm. The surface-mount footprint is common and compatible with standard reflow profiles. The low profile suits height-constrained designs like blade servers or portable instrumentation.