T491C106M016AT4021 Equivalent & Substitute Parts

Part Overview

The T491C106M016AT4021 is a 10 µF molded tantalum capacitor manufactured by KEMET, rated for 16 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 performance across industrial temperature ranges. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design flexibility within specified tolerance ranges.

Substiute Parts

T491C106M016AT4021

KEMETIn Stock: 1078T491C106M016AT4021 Datasheet

Current PartRFQ

T491C106M016AT7280

KEMETIn Stock: 4119T491C106M016AT7280 Datasheet

Parametric EquivalentRFQ

TCKIC106CT

Cal-Chip Electronics, Inc.In Stock: 62080TCKIC106CT Datasheet

Parametric EquivalentRFQ

TCMIC106CT

Cal-Chip Electronics, Inc.In Stock: 62146TCMIC106CT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T491C106M016AT4021 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Capacitance value: 10 µF (exact match required)
• Voltage rating: 16 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)
• Lifetime @ Temperature: 2000 Hrs @ 125°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variation Parameters:

• Tolerance: ±20% (main part) to ±10% (substitute acceptable; tighter tolerance is compatible)
• ESR (Equivalent Series Resistance): 1.8 Ohm (main part) to 2 Ohm (substitute acceptable; higher ESR within 0.2 Ohm variance is compatible)
• Manufacturer: KEMET or Cal-Chip Electronics, Inc.
• Series designation: T491 or TC series

All substitute parts listed maintain identical physical dimensions (0.236" L x 0.126" W / 6.00mm x 3.20mm) and maximum seated height (0.110" / 2.80mm).

Parameter Comparison

Engineering Selection Recommendations

T491C106M016AT7280 (KEMET)

This part is a direct parametric equivalent to the T491C106M016AT4021. Both components are manufactured by KEMET within the T491 series and share identical electrical specifications including 1.8 Ohm ESR, ±20% tolerance, and all thermal and compliance ratings. Selection of this substitute is appropriate when KEMET series continuity is required or when inventory of the primary part number is unavailable. Both parts maintain ROHS3 compliance and MSL 1 rating.

TCMIC106CT (Cal-Chip Electronics, Inc.)

This part provides functional equivalence with allowable parameter variation. The TCMIC106CT maintains the same 10 µF capacitance, 16 V rating, 2312 package, and operating temperature range. The ESR specification increases to 2 Ohm (0.2 Ohm higher than the main part) and tolerance remains at ±20%. This substitute is suitable for applications where the Cal-Chip TC series is acceptable and ESR tolerance of 2 Ohm is compatible with circuit design requirements. ROHS3 compliance and MSL 1 rating are maintained.

TCKIC106CT (Cal-Chip Electronics, Inc.)

This part provides functional equivalence with tighter tolerance specification. The TCKIC106CT maintains the same 10 µF capacitance, 16 V rating, 2312 package, and operating temperature range. The tolerance is ±10% (tighter than the ±20% main part specification) and ESR is 2 Ohm. This substitute is suitable for applications requiring improved capacitance tolerance control. ROHS3 compliance and MSL 1 rating are maintained. The tighter tolerance may provide enhanced circuit performance in precision applications.

All three substitute parts are Active product status with full compliance certifications matching the main part.

Frequently Asked Questions (FAQ)

Q: Can T491C106M016AT7280 be used as a direct replacement for T491C106M016AT4021?

A: Yes. Both parts are manufactured by KEMET within the T491 series and share identical electrical and mechanical specifications. The parts differ only in packaging designation (AT7280 versus AT4021), which reflects different tape and reel configurations. Electrical performance, thermal characteristics, and compliance ratings are equivalent.

Q: What is the difference between the KEMET T491 series substitutes and the Cal-Chip TC series substitutes?

A: The KEMET T491C106M016AT7280 is a direct equivalent with 1.8 Ohm ESR. The Cal-Chip TCMIC106CT and TCKIC106CT both have 2 Ohm ESR, representing a 0.2 Ohm increase. This ESR difference may affect circuit performance in applications sensitive to impedance characteristics. Both manufacturers' parts maintain identical capacitance, voltage rating, package dimensions, and compliance certifications.

Q: Is the ±10% tolerance of TCKIC106CT compatible with circuits designed for ±20% tolerance?

A: Yes. Tighter tolerance specifications are compatible with designs specified for looser tolerances. The TCKIC106CT ±10% tolerance provides improved capacitance accuracy compared to the ±20% specification of the main part. This may enhance circuit performance in applications where capacitance precision is beneficial.

Q: Are all substitute parts available in the same 2312 (6032 Metric) package?

A: Yes. All substitute parts listed are manufactured in the 2312 (6032 Metric) surface mount package with identical physical dimensions (0.236" L x 0.126" W / 6.00mm x 3.20mm) and maximum seated height (0.110" / 2.80mm). Direct board-level substitution is supported without layout modifications.

Q: Do all substitute parts maintain the same operating temperature range?

A: Yes. All substitute parts operate across the -55°C to 125°C temperature range with 2000 hours lifetime specification at 125°C, matching the main part exactly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the main part's environmental and regulatory certifications.

Q: What inventory levels are available for each substitute part?

A: T491C106M016AT4021 (main part): 1026 Pcs; T491C106M016AT7280: 4080 Pcs; TCMIC106CT: 62064 Pcs; TCKIC106CT: 62019 Pcs. All parts are listed as New Original In Stock.