T491C336M010AT4021 Equivalent & Substitute Parts

Part Overview

The T491C336M010AT4021 is a 33 µF molded tantalum capacitor manufactured by KEMET, rated for 10 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 and mechanical parameters are maintained within the specified tolerances and ratings. Identifying qualified substitutes ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining circuit performance and reliability requirements.

Substiute Parts

T491C336M010AT4021

KEMETIn Stock: 974T491C336M010AT4021 Datasheet

Current PartRFQ

TCMIA336CT

Cal-Chip Electronics, Inc.In Stock: 7267TCMIA336CT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the T491C336M010AT4021 are qualified based on strict equivalence of the following critical parameters:

• Capacitance Value: 33 µF (exact match required)
• Capacitance Tolerance: ±20% (exact match required)
• Rated Voltage: 10 V (exact match required)
• Component Type: Molded tantalum capacitor (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Lifetime @ Temperature: 2000 Hrs @ 125°C (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• Packaging Format: Tape & Reel (TR) (exact match required)

Equivalent Series Resistance (ESR) values within the range of 1.5 Ohm to 1.6 Ohm are acceptable for substitution, as this variation falls within normal manufacturing tolerances for this component category and does not impact circuit performance in general purpose applications.

Parameter Comparison

Engineering Selection Recommendations

The TCMIA336CT manufactured by Cal-Chip Electronics, Inc. is a direct parametric equivalent to the T491C336M010AT4021. Both components maintain identical electrical specifications, physical dimensions, and thermal performance characteristics.

Both parts carry Active product status, confirming ongoing availability and manufacturing support. The T491C336M010AT4021 is ROHS3 Compliant, while the TCMIA336CT is RoHS Compliant. Both components are REACH Unaffected and classified under ECCN EAR99, indicating equivalent regulatory compliance for general commercial applications.

The ESR differential of 0.1 Ohm between the two parts (1.5 Ohm versus 1.6 Ohm) is within acceptable manufacturing tolerances for molded tantalum capacitors and does not introduce performance degradation in general purpose circuit applications.

Selection between these parts may be based on inventory availability, lead time requirements, or procurement preferences, as both components satisfy identical functional and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can the TCMIA336CT be used as a direct replacement for the T491C336M010AT4021 in existing designs?

A: Yes. The TCMIA336CT meets all critical electrical and mechanical parameters specified for the T491C336M010AT4021, including capacitance value, voltage rating, package dimensions, and thermal performance. No design modifications are required.

Q: What is the significance of the ESR difference between these two parts?

A: The ESR (Equivalent Series Resistance) difference of 0.1 Ohm (1.5 Ohm versus 1.6 Ohm) falls within normal manufacturing tolerances for molded tantalum capacitors in this category. This variation does not impact circuit performance in general purpose applications and is acceptable for substitution.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both the T491C336M010AT4021 and TCMIA336CT share identical dimensions: 0.236" L x 0.126" W (6.00mm x 3.20mm) with a maximum seated height of 0.110" (2.80mm). Both use the 2312 (6032 Metric) package format and are compatible with identical PCB layouts and assembly processes.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.

Q: What is the operating temperature range for both parts?

A: Both the T491C336M010AT4021 and TCMIA336CT operate across the identical temperature range of -55°C to 125°C with a rated lifetime of 2000 hours at 125°C.

Q: Are there any regulatory or compliance differences between these parts?

A: Both components are REACH Unaffected and classified under ECCN EAR99. The T491C336M010AT4021 is ROHS3 Compliant, while the TCMIA336CT is RoHS Compliant. Both certifications are acceptable for general commercial applications.

Q: Can these parts be used interchangeably in automated assembly processes?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging format and use identical surface mount mounting types, making them fully compatible with standard automated pick-and-place assembly equipment and processes.