Is there a pin-compatible replacement for T491D337K010AT?

KEMET T491D227K010AT shares the same 7343-31 package and pinout. However, its capacitance is only 220µF vs. the original 330µF, making it a functional risk.

What risks should I check before replacing T491D337K010AT?

Key risks include changes in capacitance affecting circuit stability (e.g., voltage ripple), different package heights causing mechanical interference, and lower voltage ratings causing failure.

T491D337K010AT Alternatives, Datasheet & Cross Reference | KEMET

Finding a substitute for the KEMET T491D337K010AT 330µF 10V tantalum capacitor requires checking capacitance, voltage, and package size. While several alternatives exist, they often involve tradeoffs in these key parameters.

AI replacement insight

Electrical riskhigh

Capacitance differences can impact circuit stability and performance.

Package riskmedium

Some candidates have a different package height, requiring a mechanical fit check.

Can it be replaced directly?

No direct, one-to-one replacement is available. All candidates require engineering review due to differences in capacitance or package dimensions.

Best replacement path

Reviewing parametric alternatives like T491D227K010AT (same package, lower capacitance) or T495X477K010ATE100 (higher capacitance, taller package).

Main risk

The primary risk is functional failure due to mismatched capacitance, which can affect power supply stability and transient response.

Recommended alternatives

Matches package and voltage but has lower capacitance (220µF vs 330µF).

View details

Alternative comparison matrix

Feature / factor	T491D337K010AT	T491D227K010AT	T495X477K010ATE100	T491X227K016AT	Compatibility / risk
Package	7343-31	7343-31	7343-43 (X)	7343-43	7343-31 / 7343-43 (X) — Same EIA D-case, same height.; T495X477K010ATE100: Taller package (4.3mm vs 3.1mm).; T491X227K016AT: Taller package (4.3mm vs 3.1mm).
Capacitance	330 µF	220 µF	470 µF	220 µF	220 µF / 470 µF — Significantly lower capacitance.; T495X477K010ATE100: Higher capacitance may be acceptable.; T491X227K016AT: Significantly lower capacitance.
Voltage	10 V	10 V	10 V	16 V	10 V / 16 V — Voltage rating is identical.; T495X477K010ATE100: Voltage rating is identical.; T491X227K016AT: Higher voltage rating provides more margin.
Esr	500 mΩ	500 mΩ	100 mΩ	500 mΩ	500 mΩ / 100 mΩ — ESR is identical.; T495X477K010ATE100: Lower ESR is generally an improvement.; T491X227K016AT: ESR is identical.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. Candidates like KEMET's T491D227K010AT match the package but have lower capacitance (220µF), requiring circuit validation.