T491C335M050AT Equivalent & Substitute Parts

Part Overview

The T491C335M050AT is a 3.3 µF molded tantalum capacitor manufactured by KEMET, rated for 50 V operation with ±20% capacitance tolerance. This surface mount component is housed in a 2312 (6032 Metric) package and is designed for general-purpose applications requiring stable capacitance performance across the operating temperature range of -55°C to 125°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

T491C335M050AT

KEMETIn Stock: 1200T491C335M050AT Datasheet

Current PartRFQ

T491C335K050AT

KEMETIn Stock: 1395T491C335K050AT Datasheet

Parametric EquivalentRFQ

TAJC335M050RNJ

KYOCERA AVXIn Stock: 6498TAJC335M050RNJ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T491C335M050AT are identified based on strict electrical and mechanical parameter matching. All substitute candidates maintain identical capacitance (3.3 µF), voltage rating (50 V), package configuration (2312 / 6032 Metric), mounting type (Surface Mount), and operating temperature range (-55°C to 125°C).

Substitution logic is organized into two categories:

Parametric Equivalent (Same Manufacturer): T491C335K050AT differs only in capacitance tolerance (±10% versus ±20%), representing a tighter tolerance variant within the same KEMET T491 series. This part is suitable for applications requiring improved capacitance accuracy while maintaining all other electrical and mechanical specifications.

Direct Manufacturer Equivalent (Cross-Manufacturer): TAJC335M050RNJ from KYOCERA AVX matches all critical parameters including capacitance, voltage rating, package, and operating temperature. The ESR specification differs slightly (2.5 Ohm versus 2.0 Ohm), which remains within acceptable ranges for general-purpose tantalum capacitor applications. Both parts carry identical RoHS3 compliance and MSL 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

T491C335K050AT Selection Criteria: This KEMET parametric equivalent is suitable for applications where tighter capacitance tolerance (±10%) is required compared to the standard ±20% specification. Both parts are manufactured by KEMET within the same T491 series, ensuring consistent design and manufacturing standards. Selection of this variant does not require PCB layout modifications or thermal management changes. Inventory availability is confirmed at 1352 pieces. This part is recommended when design specifications mandate improved capacitance accuracy without introducing cross-manufacturer sourcing complexity.

TAJC335M050RNJ Selection Criteria: This KYOCERA AVX equivalent provides a cross-manufacturer alternative with identical electrical performance for general-purpose applications. The 0.5 Ohm increase in ESR (2.5 Ohm versus 2.0 Ohm) remains within acceptable operating parameters for standard tantalum capacitor applications and does not introduce thermal or performance degradation concerns. All mechanical dimensions, package configuration, and compliance certifications are identical. This part is recommended for supply chain diversification, inventory management, or when KYOCERA AVX components are preferred within the design ecosystem. Inventory availability is confirmed at 6427 pieces.

All three parts maintain Active product status, full RoHS3 compliance, and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with modern manufacturing processes and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can T491C335K050AT be used as a direct replacement for T491C335M050AT?

A: Yes. The T491C335K050AT is a parametric equivalent with identical electrical and mechanical specifications except for capacitance tolerance. The ±10% tolerance of the K-variant is tighter than the ±20% tolerance of the M-variant, making it suitable for applications requiring improved accuracy. No PCB modifications are required.

Q: What is the difference between the KEMET T491 series and the KYOCERA AVX TAJ series?

A: Both are molded tantalum capacitor series with identical performance for this application. The primary difference is manufacturer. The TAJC335M050RNJ has a slightly higher ESR specification (2.5 Ohm versus 2.0 Ohm), which remains within acceptable ranges for general-purpose applications. All other electrical and mechanical parameters are identical.

Q: Does the 0.5 Ohm ESR difference between T491C335M050AT and TAJC335M050RNJ affect circuit performance?

A: The ESR difference (2.0 Ohm to 2.5 Ohm) is within the normal operating range for general-purpose tantalum capacitors and does not introduce performance degradation for standard applications. Applications with specific ESR requirements should confirm compatibility with circuit design specifications.

Q: Are all three parts available in the same packaging format?

A: Yes. All three parts are supplied in Tape & Reel (TR) packaging and use the identical 2312 (6032 Metric) surface mount package. PCB footprints and reflow soldering profiles are identical across all three parts.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are REACH Unaffected. These certifications ensure compatibility with modern manufacturing processes and environmental regulations.

Q: Can these parts be used interchangeably in production?

A: Yes, with the following considerations: T491C335K050AT can be used interchangeably with T491C335M050AT for applications where ±10% tolerance is acceptable. TAJC335M050RNJ can be used interchangeably for general-purpose applications where the 2.5 Ohm ESR specification is acceptable. All three parts share identical package dimensions, mounting type, and operating temperature range.

Q: What is the operating temperature range for all substitute parts?

A: All three parts operate across the identical temperature range of -55°C to 125°C, with rated lifetime of 2000 hours at 125°C (KEMET parts). This ensures consistent thermal performance across all substitute options.