Is there a pin-compatible replacement for T491D106K035AT?

No pin-to-pin compatible replacements were identified in this review. All candidates have different package footprints (e.g., 6032-28, 1206) compared to the target's 7343-31 'D' case, requiring board redesign.

What risks should I check before replacing T491D106K035AT?

Key risks include: 1) Package mismatch requiring PCB layout changes. 2) Different ESR, which can affect circuit stability. 3) For MLCC alternatives, check DC bias derating, lack of polarization, and different failure modes.

T491D106K035AT Alternatives, Datasheet & Cross Reference | KEMET

Finding a substitute for the KEMET T491D106K035AT 10µF 35V tantalum capacitor involves checking package size, ESR, and technology. While no direct drop-in replacements were found, functional alternatives exist that require engineering review.

AI replacement insight

Package riskhigh

All candidates have different footprints, requiring PCB redesign.

Electrical riskmedium

Differences in ESR or technology (Tantalum vs. MLCC) require circuit validation.

Sourcing risklow

Active alternatives from major manufacturers are available.

Can it be replaced directly?

No direct, pin-compatible replacement was found. All viable options require board layout modification due to different package sizes.

Best replacement path

Use a same-series Tantalum capacitor in a different case size, like T491C106K035AT, and modify the PCB layout.

Main risk

The primary risk is the physical package mismatch, making all candidates non-drop-in replacements.

Recommended alternatives

Functionally similar KEMET Tantalum cap with same key ratings but in a smaller package requiring layout changes.

View details

Alternative comparison matrix

Feature / factor	T491D106K035AT	T491C106K035AT	GRT31CR61H106KE01L	Compatibility / risk
Package	7343-31 (D-Case)	6032-28 (C-Case)	1206 (3216 metric)	6032-28 (C-Case) / 1206 (3216 metric) — Requires PCB layout change.; GRT31CR61H106KE01L: Requires PCB layout change.
Esr	1.0 Ω	1.6 Ω	-	1.6 Ω — Higher ESR may affect circuit performance.
Capacitance	10 µF	10 µF	10 µF	10 µF — matched; GRT31CR61H106KE01L: Note: MLCC capacitance drops with DC bias.
Voltage	35 V	35 V	50 V	35 V / 50 V — matched; GRT31CR61H106KE01L: Higher voltage rating provides more margin.
Temperature	-55°C to +125°C	-55°C to +125°C	-55°C to +85°C	-55°C to +125°C / -55°C to +85°C — matched; GRT31CR61H106KE01L: Lower max operating temperature.
Technology	Tantalum	-	MLCC	MLCC — MLCC vs Tantalum. Check DC bias, ESR, polarity.

Application & sourcing insights

Questions & answers

T491C106K035AT from the same KEMET series is a strong functional candidate, offering identical capacitance, voltage, and tolerance, but in a smaller 'C' case package that requires a PCB layout change.