Is there a pin-compatible replacement for T491D107K020AT?

Yes, several parts share the same 7343-31 (D case) package and are pin-compatible. However, candidates like 293D107X9016D2TE3 have a lower voltage rating (16V vs 20V) and are not direct electrical equivalents. Always verify voltage requirements.

What risks should I check before replacing T491D107K020AT?

The primary risk is using a capacitor with a lower voltage rating, which can lead to premature failure. Also check ESR, tolerance, and temperature range to ensure they meet or exceed the original part's specifications for your application.

T491D107K020AT Alternatives, Datasheet & Cross Reference | KEMET

T491D107K020AT is a 100µF, 20V, D-case tantalum capacitor from KEMET. Finding a direct, pin-compatible replacement requires matching capacitance, voltage, and case size.

AI replacement insight

Electrical riskhigh

Lower voltage ratings on alternatives require careful circuit analysis and derating.

Package risklow

The D-case (7343-31) is a standard package, ensuring mechanical compatibility.

Sourcing riskmedium

Finding an exact parametric match may require searching across multiple vendors.

Can it be replaced directly?

No direct, fully equivalent replacement was identified. All form-fit compatible options found have a lower voltage rating, posing a significant risk.

Best replacement path

Search for 100µF, ≥20V, D-case (7343-31) tantalum capacitors from other manufacturers like Vishay or AVX.

Main risk

The main risk is electrical overstress due to lower voltage ratings in available alternatives.

Recommended alternatives

Form-fit compatible with same capacitance but lower voltage rating (16V). Requires engineering review.

View details

Alternative comparison matrix

Feature / factor	T491D107K020AT	293D107X9016D2TE3	293D107X9010D2TE3	Compatibility / risk
Package	7343-31	7343-31 (D Case)	7343-31	7343-31 (D Case) — Package is form-fit compatible.; 293D107X9010D2TE3: Package is form-fit compatible.
Capacitance	100 µF	100 µF	100 µF	100 µF — Capacitance matches target.; 293D107X9010D2TE3: Capacitance matches target.
Voltage	20 V	16 V	10 V	16 V / 10 V — Lower voltage rating poses a high risk.; 293D107X9010D2TE3: Significantly lower voltage rating (50% of target).
Tolerance	±10%	±10%	±10%	±10% — Tolerance matches target.; 293D107X9010D2TE3: Tolerance matches target.
Esr	0.9 Ω	0.6 Ω	-	0.6 Ω — Lower ESR is generally beneficial.

Application & sourcing insights

Questions & answers

The best alternative depends on application requirements. While no direct drop-in replacements were found, parts like Vishay's 293D107X9016D2TE3 offer the same package and capacitance but have a lower voltage rating (16V), requiring careful engineering review.