4.7 µF at 16 V – what this cap does for your rail
The TAJS475K016RNJ: Rated 4.7 µF at 16 V with ±10% tolerance, this molded tantalum from the TAJ series is a standard decoupling or bulk-storage cap for 12 V rails and lower. For a 5 V supply rail, derating to 50% of rated voltage is typical practice to keep DC bias stress off the dielectric.
1206 case, size code S – footprint fit
1206 (3216 Metric) body, 3.20 mm x 1.60 mm footprint, 1.20 mm seated height. The manufacturer size code S maps to this case.
This cap handles under-hood automotive, outdoor telecom cabinets, and industrial oven environments without derating the voltage at 125°C — but the ESR climbs with temperature, so ripple current margin shrinks at the hot end. No failure rate grade is specified on this general-purpose part; for high-reliability applications, the MIL-spec tantalum variants carry screening that this commercial TAJ part does not.