What this TAJ molded tantalum capacitor does on your board
The TAJB226M016RNJ: This is a 22 µF, 16 V rated molded tantalum capacitor from the KYOCERA AVX TAJ series, in a B-size case (1411 / 3528 Metric).
Date-code and provenance check for incoming inspection
The molded case and laser marking on a TAJ-series cap are straightforward to authenticate: the brand logo, capacitance code, voltage code, and date-code format must match KYOCERA AVX's published marking scheme for the TAJ family. A mismatch in font or the absence of the manufacturer's date-code lot trace is a red flag — this part is common enough that re-marked or relabeled stock turns up on the spot market. Request lot-traceable reels from the authorized chain to keep the date-code consistent across the BOM.