
Pin-compatible upgrade with higher voltage (10V) and much lower ESR (0.25Ω).
Finding a substitute for the AVX TAJB476K006RNJ, a 47µF 6.3V tantalum capacitor in a 1210 package, involves matching capacitance and package size while considering voltage and ESR. Several options from AVX's TPS series offer upgraded performance.
Upgrades to voltage and ESR are generally safe but require verification in sensitive circuits.
Pin-compatible options in the same 1210 package are available.
Yes, pin-compatible replacements exist. The TPSB476K010R0250 is a strong candidate, offering improved voltage and ESR ratings in the same package.
Upgrade to a higher voltage, lower ESR part from the AVX TPS series like TPSB476K010R0250.
The primary risk is the significant change in ESR, which can alter the behavior of power supply filters or timing circuits.

Pin-compatible upgrade with higher voltage (10V) and much lower ESR (0.25Ω).
| Feature / factor | TAJB476K006RNJ | TPSB476K010R0250 | TPSB476K010R0350 | TAJB686M010RNJ | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 3528 (1210) | 3528 (1210) | 3528 (1210) | 3528 (1210) | 3528 (1210) — Same package and pin count.; TPSB476K010R0350: Same package and pin count.; TAJB686M010RNJ: Package matches. |
| Capacitance | 47 µF | 47 µF | 47 µF | 68 µF | 47 µF / 68 µF — Capacitance matches.; TPSB476K010R0350: Capacitance matches.; TAJB686M010RNJ: Higher capacitance may not be suitable. |
| Voltage | 6.3 V | 10 V | 10 V | 10 V | 10 V — Higher voltage rating provides more margin.; TPSB476K010R0350: Higher voltage rating provides more margin.; TAJB686M010RNJ: Higher voltage rating. |
| Esr | 2 Ω | 0.25 Ω | 0.35 Ω | - | 0.25 Ω / 0.35 Ω — Significantly lower ESR improves performance but requires verification.; TPSB476K010R0350: Significantly lower ESR improves performance but requires verification. |
| Tolerance | 10% | 10% | - | 20% | 10% / 20% — Tolerance matches.; TAJB686M010RNJ: Wider tolerance is a downgrade. |
The TPSB476K010R0250 is an excellent upgrade, offering the same 47µF capacitance in a 1210 package but with a higher 10V rating and much lower ESR (0.25Ω vs 2Ω).