Is there a pin-compatible replacement for T491A226K010AT?

Based on this analysis, no pin-compatible replacements were identified. All candidates with similar electrical properties are in different physical packages.

What risks should I check before replacing T491A226K010AT?

First, verify package and land pattern compatibility. Second, ensure the replacement's voltage rating is 10V or higher. Finally, if changing technology (e.g., to ceramic), analyze DC bias, ESR, and polarity.

T491A226K010AT Alternatives, Datasheet & Cross Reference | KEMET

Reviewing alternatives for the KEMET T491A226K010AT, a 22µF 10V tantalum capacitor in a 3216-18 package. Key considerations for substitutes include matching capacitance and ensuring package compatibility.

AI replacement insight

Package riskhigh

All functional alternatives are in larger packages, requiring board redesign.

Electrical risklow

For same-technology alternatives, electrical parameters are comparable or better.

Can it be replaced directly?

No direct pin-compatible replacement was found in this review. All suitable electrical alternatives require a change in PCB layout due to different package sizes.

Best replacement path

Search for a 22µF, 10V or higher tantalum capacitor in the same 3216-18 (A-Case) package.

Main risk

Package mismatch is the primary risk, requiring board redesign. Using a different capacitor technology like MLCC introduces significant electrical risks.

Recommended alternatives

Electrically superior with higher voltage rating, but in a different, larger package.

View details

Alternative comparison matrix

Feature / factor	T491A226K010AT	T491B226K016AT	T491C226K025AT	T491D226K035AT	Compatibility / risk
Package	3216-18	3528-21	6032-28	7343-31	3528-21 / 6032-28 / 7343-31 — Candidate is larger, requires layout change.; T491C226K025AT: Candidate is larger, requires layout change.; T491D226K035AT: Candidate is significantly larger, requires layout change.
Voltage	10.0V	16.0V	25.0V	35.0V	16.0V / 25.0V / 35.0V — Higher voltage rating provides more design margin.; T491C226K025AT: Higher voltage rating provides more design margin.; T491D226K035AT: Higher voltage rating provides more design margin.
Capacitance	22.0uF	22.0uF	22.0uF	22.0uF	22.0uF — matched; T491C226K025AT: matched; T491D226K035AT: matched
Tolerance	10.0%	-	-	10.0%	10.0% — matched

Application & sourcing insights

Questions & answers

The best alternatives are other T491 series capacitors like T491B226K016AT, which offer higher voltage ratings. However, they come in different packages and require board layout changes.