0.47 µF at 20 V — bypass or coupling, not timing
The TAJR474M020SNJ is a 0.47 µF molded tantalum capacitor rated 20 V with ±20% tolerance — the wide band rules out RC timing or filter poles where the capacitor sets a frequency; it is fine for supply bypass, DC-blocking, or coupling where the exact value is secondary. The ESR is 25 Ohm — that is high relative to modern low-ESR tantalum or ceramic caps. The ripple current rating is correspondingly low; this part will self-heat if placed on a rail with significant AC content. Use it on quiet DC buses or as a decoupling cap after a regulator, not on a switching converter output.
Molded body, 0805 footprint, -55 to 125 °C
The Molded construction gives a square, flat-top body that handles pick-and-place and reflow without the mechanical compliance of a conformal-coated part. The 0805 case is a standard two-pad footprint; no special land pattern or via-in-pad is needed. The operating temperature range is -55 to 125 °C — that is the full military band. This cap can sit on a satellite board, in a downhole tool, or on an avionics line-replaceable unit where the ambient cycles across the whole range.