
Parametric upgrade (higher voltage, lower ESR) but in a larger 2917 package, requiring board changes.
Reviewing alternatives for the AVX TAJB475K010RNJ, a 4.7uF 10V 1210 Tantalum capacitor. While no direct replacements exist, several functional and parametric alternatives are available with varying risks.
Most alternatives are not in a 1210 package, preventing drop-in replacement.
Candidates have different capacitance, ESR, or are a different technology (MLCC).
No direct, fully-equivalent replacement for TAJB475K010RNJ is available in this list. All candidates have significant differences in package, capacitance, or capacitor technology.
For a drop-in attempt, TAJB335K035RNJ has the same package but lower capacitance, requiring validation. For new designs, TAJD475K050RNJ offers upgraded performance in a different package.
The primary risks are package mismatches requiring board redesign, or significant parametric deviations like lower capacitance or different capacitor technology (MLCC vs. Tantalum).

Parametric upgrade (higher voltage, lower ESR) but in a larger 2917 package, requiring board changes.
| Feature / factor | TAJB475K010RNJ | TAJD475K050RNJ | TAJR475K010RNJ | TAJB335K035RNJ | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1210 (3528 Metric) | 2917 (7343 Metric) | 0805 (2012 Metric) | 3528 (1210) | 2917 (7343 Metric) / 0805 (2012 Metric) / 3528 (1210) / 1210 (3225 metric) — Larger package requires PCB redesign.; TAJR475K010RNJ: Smaller package requires PCB redesign.; TAJB335K035RNJ: Package is a direct match.; 12101C475K4T2A: Package size is compatible for footprint. |
| Voltage | 10V | 50V | 10V | 35V | 50V / 10V / 35V / 100V — Higher voltage rating.; TAJR475K010RNJ: Voltage rating matches.; TAJB335K035RNJ: Higher voltage rating.; 12101C475K4T2A: Higher voltage rating provides more margin. |
| Esr | 4 Ohm | 1.4 Ohms | 9 Ohms | 3.5 Ohms | 1.4 Ohms / 9 Ohms / 3.5 Ohms — Lower ESR is an improvement.; TAJR475K010RNJ: Higher ESR may affect performance.; TAJB335K035RNJ: Slightly lower ESR. |
| Capacitance | 4.7µF | 4.7µF | 4.7µF | 3.3µF | 4.7µF / 3.3µF — Capacitance value matches.; TAJR475K010RNJ: Capacitance value matches.; TAJB335K035RNJ: 30% lower capacitance is a major deviation.; 12101C475K4T2A: Capacitance value matches. |
| Technology | Tantalum | - | - | - | MLCC (X7R) — Target is Tantalum. MLCC has different DC bias, ESR, and failure modes. |
TAJB335K035RNJ shares the 1210 package but has lower 3.3uF capacitance. If a board redesign is possible, TAJD475K050RNJ is a functional upgrade in a 2917 package.