T491C226M016AT4513 Equivalent & Substitute Parts

Part Overview

The T491C226M016AT4513 is a 22 µF molded tantalum capacitor manufactured by KEMET, rated for 16 V with ±20% tolerance. This surface mount component operates across -55°C to 125°C with an equivalent series resistance (ESR) of 1.5 Ohm and a lifetime specification of 2000 hours at 125°C. The part is housed in a 2312 (6032 Metric) package and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for molded tantalum capacitors. Alternative sources and tolerance grades provide design flexibility while preserving circuit performance in general-purpose applications.

Substiute Parts

T491C226M016AT4513

KEMETIn Stock: 1083T491C226M016AT4513 Datasheet

Current PartRFQ

T491C226K016AH

KEMETIn Stock: 1597T491C226K016AH Datasheet

Parametric EquivalentRFQ

T491C226K016AT2478

KEMETIn Stock: 1920T491C226K016AT2478 Datasheet

Parametric EquivalentRFQ

T491C226M016AT7280

KEMETIn Stock: 9682T491C226M016AT7280 Datasheet

Parametric EquivalentRFQ

TCKIC226CT

Cal-Chip Electronics, Inc.In Stock: 18997TCKIC226CT Datasheet

Parametric EquivalentRFQ

TCMIC226CT

Cal-Chip Electronics, Inc.In Stock: 19073TCMIC226CT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the T491C226M016AT4513 is based on the following criteria:

Primary Equivalence Parameters:

• Capacitance: 22 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 @ 125°C: 2000 Hrs (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowed Variation Parameters:

• Tolerance: ±20% or ±10% (tighter tolerance acceptable)
• ESR: 1.5 Ohm or 1.0 Ohm (lower ESR acceptable)
• Manufacturer: KEMET or Cal-Chip Electronics, Inc.
• RoHS Status: ROHS3 Compliant or RoHS non-compliant (compliance acceptable)

All substitute parts maintain identical electrical performance within circuit design specifications while offering alternative sourcing options and tolerance grades.

Parameter Comparison

Engineering Selection Recommendations

KEMET T491C226M016AT4513 (Original Part)

• ROHS3 compliant
• ±20% tolerance, 1.5 Ohm ESR
• 1057 units in stock

KEMET T491C226M016AT7280 (Direct Equivalent)

• ROHS3 compliant
• Identical electrical specifications (±20% tolerance, 1.5 Ohm ESR)
• Highest inventory availability (9621 units)
• Recommended for direct replacement with no design impact

KEMET T491C226K016AT2478 (Tighter Tolerance)

• ROHS3 compliant
• ±10% tolerance (improved accuracy), 1.5 Ohm ESR
• 1810 units in stock
• Suitable for applications requiring tighter capacitance tolerance

KEMET T491C226K016AH (Tighter Tolerance, Non-Compliant)

• RoHS non-compliant
• ±10% tolerance, 1.5 Ohm ESR
• 1544 units in stock
• Acceptable only in applications where RoHS compliance is not required

Cal-Chip TCKIC226CT (Alternative Manufacturer, Tighter Tolerance)

• ROHS3 compliant
• ±10% tolerance, 1.0 Ohm ESR (lower ESR improves performance)
• 18889 units in stock
• Suitable for applications benefiting from reduced ESR

Cal-Chip TCMIC226CT (Alternative Manufacturer, Direct Tolerance Match)

• ROHS3 compliant
• ±20% tolerance, 1.0 Ohm ESR
• 19038 units in stock
• Recommended for direct replacement with ESR advantage

Frequently Asked Questions (FAQ)

Q: Can T491C226K016AT2478 replace T491C226M016AT4513? A: Yes. Both parts share identical electrical and mechanical specifications except tolerance. The ±10% tolerance of T491C226K016AT2478 is tighter than the ±20% tolerance of the original part, making it a direct functional replacement. Both are ROHS3 compliant with 1.5 Ohm ESR.

Q: What is the difference between KEMET and Cal-Chip substitute parts? A: KEMET parts (T491 series) and Cal-Chip parts (TC series) are different manufacturers. All listed substitutes maintain identical capacitance, voltage, package, and operating temperature specifications. Cal-Chip parts feature 1.0 Ohm ESR compared to KEMET's 1.5 Ohm ESR, providing lower equivalent series resistance.

Q: Is T491C226K016AH suitable for my application? A: T491C226K016AH is electrically equivalent but is RoHS non-compliant. Use this part only if your application does not require RoHS3 compliance. Electrical performance is identical to the original part.

Q: Why would I choose a Cal-Chip substitute over KEMET? A: Cal-Chip substitutes (TCKIC226CT and TCMIC226CT) offer lower ESR (1.0 Ohm vs. 1.5 Ohm), which reduces impedance and improves performance in high-frequency or high-current applications. Both are ROHS3 compliant with superior inventory availability.

Q: Are all substitute parts in the same 2312 package? A: Yes. All listed substitutes use the 2312 (6032 Metric) package with identical dimensions (0.236" L x 0.126" W, 6.00mm x 3.20mm) and maximum seated height (0.110", 2.80mm). Direct PCB mounting compatibility is confirmed.

Q: What is the significance of MSL 1 (Unlimited)? A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed substitutes share this specification, eliminating moisture sensitivity concerns during storage and handling.

Q: Can I use T491C226M016AT7280 as a drop-in replacement? A: Yes. T491C226M016AT7280 is a direct equivalent with identical specifications to T491C226M016AT4513. Both feature ±20% tolerance, 1.5 Ohm ESR, and ROHS3 compliance. This part offers the highest inventory availability (9621 units).