What this molded tantalum covers on the board
The TAJP684M035RNJ is a molded tantalum capacitor from the TAJ series, built for surface-mount boards where a 0.68 µF bypass or filter cap needs to sit in an 0805 footprint and handle up to 35 V steady — generous headroom for a 12 V or 24 V rail.
The molded case is a solid tantalum construction, so no liquid electrolyte to dry out; the failure mode is a short if the voltage or ripple exceeds the rating, so always derate the applied voltage by 50% for best reliability.
Lifecycle and ordering posture
Supplied on tape and reel for automated assembly; the 0805 case (2.05mm x 1.35mm footprint, 1.50mm seated height) is a standard pick-and-place size with no special reflow profile requirements.