T491C336M020AT Equivalent & Substitute Parts

Part Overview

The T491C336M020AT is a 33 µF molded tantalum capacitor manufactured by KEMET, rated for 20 V operation in a 2312 (6032 Metric) surface mount package. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across different manufacturers or voltage ratings within the same package specification. Alternative components may be required due to inventory availability, lead time considerations, or specific design margin requirements.

Substiute Parts

T491C336M020AT

KEMETIn Stock: 3493T491C336M020AT Datasheet

Current PartRFQ

T491C336M006AT

KEMETIn Stock: 923T491C336M006AT Datasheet

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293D336X9020C2TE3

Vishay SpragueIn Stock: 2493293D336X9020C2TE3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T491C336M020AT are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Capacitance value: 33 µF (exact match required)
• Voltage rating: 20 V (equal or higher rating acceptable)
• Package / Case: 2312 (6032 Metric) (exact match required for mechanical compatibility)
• Mounting Type: Surface Mount (exact match required)
• Type: Molded tantalum (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Secondary Compatibility Factors:

• Tolerance: ±20% or tighter tolerance acceptable
• ESR: Lower or equal ESR values acceptable
• RoHS3 Compliance: Required for regulatory alignment
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred

Parts meeting all primary criteria are classified as direct substitutes. The T491C336M006AT shares identical mechanical and electrical characteristics except for voltage rating (6.3 V), which limits its application to lower-voltage circuits. The 293D336X9020C2TE3 from Vishay Sprague provides equivalent voltage and capacitance with improved tolerance (±10%) and lower ESR (1 Ohm).

Parameter Comparison

Engineering Selection Recommendations

T491C336M020AT (Primary Component)

The T491C336M020AT is the specified component with Active product status, full RoHS3 compliance, and REACH Unaffected designation. This part is suitable for applications requiring 20 V rated voltage with 33 µF capacitance in the 2312 package footprint.

293D336X9020C2TE3 (Direct Equivalent Substitute)

The 293D336X9020C2TE3 from Vishay Sprague is a direct functional equivalent with identical voltage rating (20 V) and capacitance (33 µF). This substitute offers improved tolerance specification (±10% versus ±20%) and lower ESR (1 Ohm versus 1.2 Ohm). The component maintains identical package dimensions, operating temperature range, and regulatory compliance status (RoHS3 Compliant, REACH Unaffected). This substitute is suitable for direct replacement in applications where the improved electrical characteristics are beneficial or where supply chain requirements necessitate cross-manufacturer sourcing.

T491C336M006AT (Voltage-Derated Substitute)

The T491C336M006AT is a KEMET component with identical capacitance, package, and mechanical specifications but operates at a reduced voltage rating of 6.3 V. This substitute is applicable only in circuits where the operating voltage does not exceed 6.3 V. The higher ESR (1.8 Ohm versus 1.2 Ohm) may impact performance in applications sensitive to impedance characteristics. This component is not suitable for direct replacement in 20 V rated circuits.

Frequently Asked Questions (FAQ)

Q: Can the T491C336M006AT replace the T491C336M020AT in a 20 V circuit?

A: No. The T491C336M006AT is rated for 6.3 V maximum operation. Using this component in a 20 V circuit exceeds its voltage rating and will result in component failure. This substitute is applicable only in circuits where the operating voltage does not exceed 6.3 V.

Q: What are the key differences between the T491C336M020AT and 293D336X9020C2TE3?

A: Both components share identical capacitance (33 µF), voltage rating (20 V), package (2312), and operating temperature range (-55°C ~ 125°C). The 293D336X9020C2TE3 offers tighter tolerance (±10% versus ±20%) and lower ESR (1 Ohm versus 1.2 Ohm). The primary difference is manufacturer: KEMET versus Vishay Sprague.

Q: Are all substitute parts mechanically compatible with the T491C336M020AT?

A: Yes. All listed substitutes use the identical 2312 (6032 Metric) package with matching footprint dimensions (0.236" L x 0.126" W) and maximum seated height (0.110" / 2.80mm). All components are surface mount type and are mechanically interchangeable on PCB layouts designed for the 2312 package.

Q: Do all substitute parts meet the same regulatory requirements as the T491C336M020AT?

A: Yes. All listed substitutes are RoHS3 Compliant and REACH Unaffected, matching the regulatory status of the T491C336M020AT. All components carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: Which substitute should be selected for improved electrical performance?

A: The 293D336X9020C2TE3 provides improved electrical characteristics with ±10% tolerance (versus ±20%) and 1 Ohm ESR (versus 1.2 Ohm). This substitute is suitable for applications where lower impedance or tighter capacitance tolerance is required.

Q: Can substitutes be mixed on the same PCB assembly?

A: Yes. All listed substitutes are mechanically and electrically compatible within their specified voltage ratings. Mixed sourcing of T491C336M020AT and 293D336X9020C2TE3 on the same assembly is permissible for 20 V circuits. The T491C336M006AT must not be mixed with 20 V rated components in the same circuit.