TAJB106M016RNJ

TAJB106M016RNJ is a Kyocera AVX 10 µF ±20% molded tantalum capacitor rated 16 V, case B (3528 metric / 1210), ESR 2.8 Ω, operating -55 to +125 °C — the standard decoupling tantalum for 5 V and 12 V rails in space-constrained designs. The 10 µF / 16 V / case-B combination is the selection point: a widely second-sourced footprint (KEMET T491B106M016AT is the cross) with stable capacitance over voltage and temperature, unlike high-K MLCCs that shed capacitance under DC bias. Selection advice: note the M suffix denotes ±20% tolerance, not ±10% — match the full code if your design margins assume K tolerance. Tantalum is polarized, so verify PCB polarity marking; derate the 16 V rating on the actual rail and be cautious with very low-impedance supplies where inrush surge current is the classic tantalum failure mode. For lower ESR or higher ripple current, compare polymer tantalum or MLCC banks rather than swapping on capacitance alone. This is a general-purpose part, not automotive qualified. Evidence: DigiKey listings confirm 10 µF, ±20%, 16 V, case B, 2.8 Ω ESR and Active status.