The TAJY227K002RNJ: This is a molded tantalum capacitor from the TAJ series, rated 220 µF at 2.5 V with ±10% tolerance. The 300 mOhm ESR sets the ripple current ceiling — at 100 kHz, the self-heating from ripple current stays within the 125°C max if the RMS current is kept under ~1.1 A.
2917 case, Y code — footprint and height constraints
The 2917 (7343 Metric) case measures 7.30 mm x 4.30 mm with a seated height of 2.00 mm max. The Y size code is the standard 2.0 mm height variant in the TAJ family — it fits under a 2.5 mm board-to-shield gap with 0.5 mm clearance. Surface-mount reflow profile follows the standard tantalum profile: peak 260°C, ramp rate ≤3°C/s, soak above 217°C for 60-90 seconds.
Active production — no EOL notice on record
KYOCERA AVX lists the TAJY227K002RNJ as Active. No last-time-buy window or end-of-life notice has been published. Tantalum capacitor supply is sensitive to raw-material availability — lead times can stretch during allocation cycles.