This TAJR335K004RNJ is a 3.3 µF molded tantalum capacitor rated at 4 V DC, with ±10% tolerance. The 20 Ohm ESR (Equivalent Series Resistance) is a key parameter for ripple current handling. At 3.3 µF and 4 V, this ESR is relatively high, which means the capacitor will dissipate more heat under AC ripple — check the ripple current in your circuit against the power dissipation limit for the 0805 case.
Package footprint and PCB layout fit
Packaged in an 0805 (2012 Metric) case, with dimensions 2.05 mm x 1.30 mm and a seated height of 1.20 mm max. The manufacturer size code is R. This is a standard surface-mount footprint — the 0805 pad geometry is widely supported in PCB design libraries and reflow profiles. No special handling beyond standard moisture sensitivity level (MSL) for molded tantalum capacitors is expected, but confirm with the full datasheet.
This makes the TAJR335K004RNJ suitable for avionics, downhole instrumentation, satellite electronics, and other high-reliability environments where the capacitor must operate across extreme thermal swings without derating below the 4 V line.