Is there a pin-compatible replacement for T494B226K010AT?

Yes, parts like Vishay's 293D226X9016B2TE3 share the same 3528-21 package and pinout. However, you must verify electrical parameters like ESR, as they can differ significantly.

What risks should I check before replacing T494B226K010AT?

Key risks are ESR (Equivalent Series Resistance), tolerance, and dielectric type. A mismatch in ESR can cause instability in power supplies. A change from MnO2 to Polymer dielectric also affects circuit behavior.

T494B226K010AT Alternatives, Datasheet & Cross Reference | KEMET

Finding a substitute for the KEMET T494B226K010AT 22µF 10V tantalum capacitor requires careful review of ESR and dielectric type. While form-fit options exist, key electrical parameters may differ.

AI replacement insight

Electrical riskhigh

Major differences in ESR and dielectric type require circuit analysis.

Package risklow

Kept candidates match the 3528-21 package.

Can it be replaced directly?

No direct, drop-in replacement was found. All candidates have significant parametric differences, such as ESR or dielectric type, that require engineering review.

Best replacement path

The KEMET T521B226M025ATE100 is a potential upgrade to a polymer dielectric, offering lower ESR but requiring circuit stability verification. For a lower-risk option, search for another MnO2 cap with ESR closer to 0.7Ω.

Main risk

The primary risk is ESR mismatch. Candidates have either much lower (Polymer) or much higher (other MnO2) ESR, which can affect regulator stability and filtering performance.

Recommended alternatives

A form-fit compatible capacitor with higher voltage but significantly worse ESR, posing a performance risk.

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Alternative comparison matrix

Feature / factor	T494B226K010AT	293D226X9016B2TE3	T521B226M025ATE100	Compatibility / risk
Package	3528-21	3528-21 (B Case)	3528-21 (1411 Metric)	3528-21 (B Case) / 3528-21 (1411 Metric) — Package size matches.; T521B226M025ATE100: Package size matches.
Voltage	10.0V	16.0V	25.0V	16.0V / 25.0V — Higher voltage rating provides more margin.; T521B226M025ATE100: Higher voltage rating provides more margin.
Capacitance	22.0µF	22.0µF	22.0µF	22.0µF — Capacitance matches.; T521B226M025ATE100: Capacitance matches.
Tolerance	±10.0%	±10.0%	±20.0%	±10.0% / ±20.0% — Tolerance matches.; T521B226M025ATE100: Wider tolerance may affect circuit precision.
Esr	0.7Ω	1.9Ω	0.1Ω	1.9Ω / 0.1Ω — Significantly higher ESR is a performance downgrade.; T521B226M025ATE100: Polymer dielectric provides much lower ESR.
Dielectric	Solid MnO2	-	Polymer	Polymer — Different dielectric requires stability check.

Application & sourcing insights

Questions & answers

The KEMET T521B226M025ATE100 is a potential upgrade with lower ESR, but requires review. The Vishay 293D226X9016B2TE3 is a form-fit match but has higher ESR, which is a performance downgrade.