T491C336M020AT4021 Equivalent & Substitute Parts

Part Overview

The T491C336M020AT4021 is a 33 µF molded tantalum capacitor rated for 20 V operation in a 2312 (6032 Metric) surface mount package. This component is manufactured by KEMET and maintains Active product status. The part is specified for general purpose applications requiring stable capacitance performance across the operating temperature range of -55°C to 125°C with a rated lifetime of 2000 hours at 125°C.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for molded tantalum capacitors. Alternative components may be required due to inventory availability, specific tolerance requirements, or ESR performance characteristics for particular circuit applications.

Substiute Parts

T491C336M020AT4021

KEMETIn Stock: 849T491C336M020AT4021 Datasheet

Current PartRFQ

T495C336K020ATE200

KEMETIn Stock: 1060T495C336K020ATE200 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T491C336M020AT4021 is permissible when the following critical parameters remain constant:

• Capacitance Value: 33 µF (exact match required)
• Voltage Rating: 20 V (exact match required)
• Package / Case: 2312 (6032 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Type: Molded Tantalum (exact match required)

Parameters that may vary within acceptable substitution criteria:

• Tolerance: May be tighter (±10% acceptable for ±20% specification)
• ESR: May be lower than specified maximum (200 mOhm acceptable for 1.2 Ohm specification)

The substitute part T495C336K020ATE200 meets all critical parameter requirements while providing improved tolerance specification and reduced ESR performance.

Parameter Comparison

Engineering Selection Recommendations

Both the T491C336M020AT4021 and T495C336K020ATE200 are Active status products manufactured by KEMET with full ROHS3 compliance and REACH Unaffected designation. Both components are suitable for applications requiring 33 µF capacitance at 20 V in the 2312 surface mount package.

The T495C336K020ATE200 provides a tighter tolerance specification (±10% versus ±20%) and lower ESR performance (200 mOhm versus 1.2 Ohm). Selection between these parts depends on circuit requirements for tolerance precision and ESR characteristics. Both parts maintain identical thermal performance, moisture sensitivity classification, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the T495C336K020ATE200 be used as a direct replacement for the T491C336M020AT4021?

A: Yes. Both parts share identical capacitance (33 µF), voltage rating (20 V), package dimensions (2312/6032 Metric), and operating temperature range (-55°C to 125°C). The substitute part provides improved tolerance and lower ESR characteristics.

Q: What is the difference in tolerance between these parts?

A: The T491C336M020AT4021 specifies ±20% tolerance, while the T495C336K020ATE200 specifies ±10% tolerance. The substitute part provides tighter capacitance accuracy.

Q: How do the ESR specifications differ?

A: The T491C336M020AT4021 has an ESR of 1.2 Ohm. The T495C336K020ATE200 has an ESR of 200 mOhm at 100 kHz. Lower ESR in the substitute part results in reduced impedance and improved high-frequency performance.

Q: Are the physical dimensions identical?

A: Yes. Both parts are housed in the 2312 (6032 Metric) package with dimensions of 0.236" L x 0.126" W (6.00mm x 3.20mm) and maximum seated height of 0.110" (2.80mm).

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

A: Yes. Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are both parts RoHS compliant?

A: Yes. Both the T491C336M020AT4021 and T495C336K020ATE200 are ROHS3 Compliant and REACH Unaffected.

Q: What is the rated lifetime for both parts?

A: Both parts are rated for 2000 hours at 125°C operating temperature.