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Best Alternatives to T491A476M006AT

Package: 1206 (3216 Metric)KEMETTantalum CapacitorsSeries: T491Package: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Capacitance: 47 µFTolerance: ±20%Voltage - Rated: 6.3 V

Find recommended replacements for the KEMET T491A476M006AT, a 47µF 6.3V tantalum capacitor in an A-Case package. Analysis includes pin-compatible upgrades and functional alternatives.

AI replacement insight

Package riskhigh

Many alternatives are in different packages (B-Case, 0805), requiring a PCB redesign.

Electrical riskmedium

Some cross-vendor parts may have higher ESR. Technology changes (to MLCC) introduce DC bias risk.

Sourcing risklow

This is a common capacitor value with many available sources.

Can it be replaced directly?

Direct replacement for T491A476M006AT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a higher voltage part in the same family, like the KEMET T490 series.

Main risk

The main risk when substituting is choosing a part with a different package or higher ESR, which can impact board layout and circuit performance.

Recommended alternatives

2
T490A476M010ATE1K2 package
T490A476M010ATE1K2

KEMET

Needs validationlow risk

A pin-compatible upgrade from the same manufacturer with a higher voltage rating and lower ESR.

View details

Alternative comparison matrix

Feature / factorT491A476M006ATT490A476M010ATE1K2CA45-A-10V-47uF-MAlt 3Compatibility / risk
Package3216-183216-18 (A Case)3216-183216-18 (A Case) — Package matches target A-Case.; CA45-A-10V-47uF-M: Package matches target A-Case.
Voltage6.3V10.0V10.0V10.0V — Higher voltage rating provides more design margin.; CA45-A-10V-47uF-M: Higher voltage rating.
Esr3.5 Ω1.2 Ω≤5.0 Ω1.2 Ω / ≤5.0 Ω — Lower ESR is generally beneficial for filtering applications.; CA45-A-10V-47uF-M: Candidate max ESR is higher than target's typical ESR.
Capacitance47.0µF47.0µF-47.0µF — matched
ManufacturerKEMETKEMETXY (Zhenhua Xinyun)KEMET / XY (Zhenhua Xinyun) — Same manufacturer, different series (T490 vs T491).; CA45-A-10V-47uF-M: Cross-vendor alternative.

Application & sourcing insights

Questions & answers

Verified drop-in options for T491A476M006AT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.