Is there a pin-compatible replacement for T491B107M010AT?

No pin-compatible replacements were identified in this analysis. All viable electrical alternatives require a different PCB footprint due to a larger package size.

What risks should I check before replacing T491B107M010AT?

The most critical risk is the physical package size. Verify the case code (e.g., 3528-21 vs 7343-31) matches your board layout. Also confirm voltage, capacitance, and ESR meet your design's needs.

T491B107M010AT Alternatives, Datasheet & Cross Reference | KEMET

T491B107M010AT is a 100µF, 10V, 20% tolerance tantalum capacitor in a 3528-21 (B) package. Finding a direct drop-in replacement requires matching these key parameters and the physical case size.

AI replacement insight

Package riskhigh

All viable electrical alternatives are in a larger package, requiring PCB redesign.

Electrical risklow

Functional alternatives meet or exceed voltage, tolerance, and ESR specifications.

Can it be replaced directly?

No direct pin-compatible replacements were found in this review. Several functional alternatives exist but have a larger package, requiring board redesign.

Best replacement path

Search for capacitors with 100µF capacitance, voltage ≥ 10V, and a 3528-21 (B) package. Tighter tolerance (e.g., ±10%) is generally acceptable.

Main risk

The primary risk is package mismatch. Using an alternative with a different case size like 7343-31 (D-case) will not fit on the existing PCB footprint.

Recommended alternatives

Cross-vendor functional alternative with similar voltage but a larger package.

View details

Alternative comparison matrix

Feature / factor	T491B107M010AT	293D107X9010D2TE3	293D107X9016D2TE3	T491D107K020AT	Compatibility / risk
Package	3528-21 (B)	7343-31 (D)	7343-31 (D)	7343-31 (D)	7343-31 (D) — Candidate is physically larger, requires layout change.; 293D107X9016D2TE3: Candidate is physically larger, requires layout change.; T491D107K020AT: Candidate is physically larger, requires layout change.
Voltage	10V	10V	16V	20V	10V / 16V / 20V — Voltage rating matches target.; 293D107X9016D2TE3: Higher voltage rating provides more margin.; T491D107K020AT: Higher voltage rating provides more margin.
Tolerance	±20%	±10%	±10%	±10%	±10% — Tighter tolerance is an improvement.; 293D107X9016D2TE3: Tighter tolerance is an improvement.; T491D107K020AT: Tighter tolerance is an improvement.
Esr	1.2 Ω	0.9 Ω	0.6 Ω	0.9 Ω	0.9 Ω / 0.6 Ω — Lower ESR is generally better for performance.; 293D107X9016D2TE3: Significantly lower ESR improves performance.; T491D107K020AT: Lower ESR is generally better for performance.

Application & sourcing insights

Questions & answers

Functionally, parts like KEMET's T491D107K020AT offer better electrical specs (100µF, 20V, 10%) but come in a larger package (7343-31) and are not drop-in replacements.