The TAJD475M050UNJV is a molded tantalum capacitor from the TAJ series, rated 4.7 µF at 50 V with ±20% tolerance. The 50 V rating gives headroom on a 12 V or 24 V automotive rail — a 24 V nominal bus sees transients up to 40 V, and this part stays inside the derating guideline of 50% of rated voltage for tantalum.
AEC-Q200 — the automotive qualification check
This part carries AEC-Q200 qualification, the passive-component stress test standard for automotive electronics. It covers temperature cycling, moisture resistance, mechanical shock, and vibration — the same reliability regime as the ICs on the board. For an under-hood ECU that sees 105°C ambient, the actual service life is longer — the 125°C rating is the endurance floor, not the operating limit.