Molded tantalum, 0.15 µF, 35 V — 1206 footprint
The TAJS154M035RNJ: This is a KYOCERA AVX TAJ-series molded tantalum capacitor rated 0.15 µF at 35 V with ±20% tolerance. The 1206 (3216 Metric) case is a common surface-mount footprint — fits standard pick-and-place and reflow profiles without a separate fixture. Operating temperature spans -55 to +125 °C, which covers the full industrial range and most automotive cabin applications. The molded construction gives a solid case for vibration environments compared to conformal-coated chips. ESR is 21 Ω — typical for a small-case tantalum at this capacitance. Budget this in the ripple current calculation; the part is not a low-ESR decoupling cap but works for filtering or timing where the series resistance is known.
General-purpose tantalum — where it fits
The TAJ series is a general-purpose molded tantalum line. No low-ESR, automotive, or high-reliability screening is listed — use it in non-critical filtering, bypass, or timing roles where the 21 Ω ESR and ±20% tolerance are acceptable. Manufacturer size code S corresponds to the 1206 body (3.20 mm × 1.60 mm footprint, 1.20 mm seated height). Board layout matches the standard 1206 land pattern.