The TAJA225M006HNJ: This is a 2.2 µF molded tantalum capacitor in a 1206 case, rated at 6.3 V with a ±20% tolerance and 9 Ohm ESR measured at 100 kHz. It belongs to the TAJ series from KYOCERA AVX, a general-purpose line that covers the bulk of low-voltage decoupling needs on digital and mixed-signal boards. On a 1.8 V core supply the margin is even wider, so this part fits comfortably on most low-voltage rails without the voltage-derating headache that often catches people with tantalum caps.
That 125°C endurance is the key spec – it means the cap can sit next to a hot switching regulator or inside an engine-bay ECU and still deliver its rated life. The -55°C low end covers cold-soak starts in arctic conditions or avionics unpressurized bays.
Active production – no last-time-buy pressure
This part is still in regular production and can be ordered against a BOM quantity without the supply-chain clock ticking.
1206 footprint – fits the standard land pattern
The 1206 case (3.20 mm x 1.60 mm) with a seated height of 1.80 mm matches the standard 1206 tantalum footprint.