Molded tantalum, 1 µF at 50 V — the 1206 case and full mil-temp range
ESR and lifetime — what the 6.6 Ohm and 2000 hours mean for your rail
At 50 V with a 1 µF capacitance, this ESR is typical for the A case size and limits the capacitor to low-ripple applications — bypass, decoupling, or hold-up where the AC current stays under ~50 mA RMS. The 2000-hour endurance at 125°C is the standard tantalum rating; derating the voltage to 30-40 V doubles the useful life in practice.
Active production — sourcing and lifecycle posture
The TAJ series is a mature, widely second-sourced platform; the TAJA105M050SNJ is the exact ordering code for the molded 1206, 1 µF, 50 V, ±20% variant.