Is there a pin-compatible replacement for T491C475K035AT?

Currently, no pin-compatible (drop-in) replacement has been verified. All suitable alternatives require a change in the PCB layout due to different package sizes.

What risks should I check before replacing T491C475K035AT?

Key risks include package mismatch requiring a new PCB layout, and for MLCC alternatives, changes in ESR, leakage current, and capacitance under DC bias. Always verify in-circuit performance.

T491C475K035AT Alternatives, Datasheet & Cross Reference | KEMET

Find and compare replacements for the KEMET T491C475K035AT, a 4.7µF 35V tantalum capacitor. This guide analyzes functional alternatives, considering package, voltage, and technology differences.

AI replacement insight

Package riskhigh

No candidates match the 6032-28 package, requiring PCB redesign.

Electrical riskmedium

MLCC options have different characteristics (ESR, leakage, DC bias) than tantalum.

Sourcing risklow

Several active alternatives from major manufacturers are available.

Can it be replaced directly?

No direct pin-to-pin replacement has been identified. All reviewed candidates require board layout changes or have different electrical characteristics.

Best replacement path

Consider KEMET T491D475K050AT for a same-series upgrade, but note the larger 'D' package. MLCCs are possible but require significant design validation.

Main risk

The primary risk is physical incompatibility due to different package sizes. Substituting with MLCCs introduces electrical risks like different ESR and DC bias effects.

Recommended alternatives

Functional alternative from the same series with higher voltage but in a larger package.

View details

Alternative comparison matrix

Feature / factor	T491C475K035AT	T491D475K050AT	GRT21BR61H475KE13L	Compatibility / risk
Package	6032-28	7343-31 (D)	0805	7343-31 (D) / 0805 — Larger package requires layout change.; GRT21BR61H475KE13L: Smaller package requires layout change.
Voltage	35.0V	50.0V	50.0V	50.0V — Higher voltage rating provides more margin.; GRT21BR61H475KE13L: Higher voltage rating.
Capacitance	4.7e-06F	4.7e-06F	4.7e-06F	4.7e-06F — matched; GRT21BR61H475KE13L: matched
Esr	2.0Ω	unknown	-	unknown — Candidate ESR not specified, must be verified.
Technology	Tantalum	-	MLCC	MLCC — Different technology (MLCC vs Tantalum) affects ESR, leakage, and DC bias.

Application & sourcing insights

Questions & answers

The KEMET T491D475K050AT is a strong functional alternative from the same series with a higher voltage rating, but it requires a larger PCB footprint (7343 'D' case).