Is there a pin-compatible replacement for T491C106K035AT?

No pin-compatible drop-in replacement has been confirmed from the candidates reviewed. The primary issue is the package mismatch; the target uses a 6032-28 (Case C) which differs from all candidates.

What risks should I check before replacing T491C106K035AT?

Key risks include: 1) Package size mismatch requiring PCB redesign. 2) Technology change from Tantalum to MLCC, which affects capacitance under DC bias, ESR, and temperature stability. 3) Parametric downgrades like wider tolerance or lower max temperature.

T491C106K035AT Alternatives, Datasheet & Cross Reference | KEMET

Finding a substitute for the KEMET T491C106K035AT, a 10µF 35V tantalum capacitor in a 6032-28 package, requires careful review of package size and capacitor technology. While some parts match electrically, physical and technological differences present risks.

AI replacement insight

Package riskhigh

Most candidates have different footprints, requiring PCB redesign.

Electrical riskhigh

Swapping Tantalum for MLCC introduces DC bias, ESR, and leakage current concerns.

Sourcing riskmedium

Some potential alternatives have NRND (Not Recommended for New Designs) status.

Can it be replaced directly?

No direct pin-to-pin replacement has been identified. All candidates require engineering review due to package, technology, or parametric differences.

Best replacement path

The best path is finding another T491 series capacitor in the same 'C' (6032-28) case size. If unavailable, a functional review is needed for parts in different packages or technologies.

Main risk

The main risks are package mismatch, preventing a drop-in replacement, and technology differences (Tantalum vs. MLCC) affecting electrical behavior.

Recommended alternatives

Functionally similar KEMET Tantalum capacitor with matching key specs but in a larger 7343-31 (D) case size.

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Alternative comparison matrix

Feature / factor	T491C106K035AT	T491D106K035AT	GRT31CR61H106KE01L	Compatibility / risk
Package	6032-28	7343-31	1206 (3216 metric)	7343-31 / 1206 (3216 metric) — Candidate is larger (Case D vs Case C).; GRT31CR61H106KE01L: Candidate is a different size.
Capacitance	10 µF	10 µF	-	10 µF — matched
Voltage	35V	35V	50V	35V / 50V — matched; GRT31CR61H106KE01L: Higher voltage rating provides more margin.
Esr	1.6 Ω	1.0 Ω	-	1.0 Ω — Lower ESR is generally favorable.
Technology	Tantalum	-	MLCC (X5R)	MLCC (X5R) — Different technology affects DC bias, ESR, and failure modes.
Temperature	-55°C to +125°C	-	-55°C to +85°C	-55°C to +85°C — Reduced maximum operating temperature.

Application & sourcing insights

Questions & answers

The closest alternative is T491D106K035AT, which has identical electrical specs but a larger package (7343-31), requiring a PCB layout change. MLCC alternatives exist but require careful engineering validation.