T491B475K010AT4513 Equivalent & Substitute Parts

Part Overview

The T491B475K010AT4513 is a 4.7 µF molded tantalum capacitor rated at 10 V, manufactured by KEMET in the T491 series. This component is designed for general-purpose surface mount applications in the 1411 (3528 Metric) package format. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. The primary substitute listed represents an alternative from KEMET's product portfolio with identical core electrical ratings and package specifications.

Substiute Parts

T491B475K010AT4513

KEMETIn Stock: 1292T491B475K010AT4513 Datasheet

Current PartRFQ

T495B475K010ATE1K3

KEMETIn Stock: 5159T495B475K010ATE1K3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T491B475K010AT4513 is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Capacitance: 4.7 µF (exact match required)
• Voltage Rating: 10 V (exact match required)
• Tolerance: ±10% (exact match required)
• Package / Case: 1411 (3528 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)

Allowable Variation Parameters:

• ESR (Equivalent Series Resistance): May vary within acceptable limits for the application
• Lifetime @ Temperature: Consistent specification across substitutes

The substitute part T495B475K010ATE1K3 meets all critical matching parameters while operating within the same electrical and thermal specifications. Both parts are manufactured by KEMET and maintain identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the T491B475K010AT4513 and T495B475K010ATE1K3 are Active products with full regulatory compliance. Selection between these parts is based on the following engineering criteria:

T491B475K010AT4513 (Primary Part):

• Standard ESR specification of 3.5 Ohm
• Established supply chain with 1184 pieces in stock
• Suitable for general-purpose applications with standard ESR tolerance

T495B475K010ATE1K3 (Substitute Part):

• Lower ESR specification of 1.3 Ohm @ 100kHz
• Higher inventory availability with 5072 pieces in stock
• Applicable for applications requiring reduced equivalent series resistance
• Enhanced performance characteristics for high-frequency filtering applications

Both parts maintain identical compliance certifications (RoHS3, REACH Unaffected) and thermal specifications. The substitute part offers superior ESR performance while maintaining full mechanical and electrical compatibility within the specified 1411 package format.

Frequently Asked Questions (FAQ)

Q: Can T495B475K010ATE1K3 be used as a direct replacement for T491B475K010AT4513?

A: Yes. Both parts share identical capacitance (4.7 µF), voltage rating (10 V), tolerance (±10%), package format (1411/3528 Metric), and operating temperature range (-55°C to 125°C). The substitute part features lower ESR (1.3 Ohm vs. 3.5 Ohm), which represents improved performance characteristics while maintaining full electrical and mechanical compatibility.

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

A: ESR (Equivalent Series Resistance) affects high-frequency performance and ripple current handling. The T495B475K010ATE1K3 with 1.3 Ohm ESR provides superior performance in filtering applications and reduced heat generation compared to the 3.5 Ohm specification of the T491B475K010AT4513. Both values are within acceptable ranges for 4.7 µF, 10 V tantalum capacitors in the 1411 package.

Q: Are there any PCB layout or assembly considerations when switching between these parts?

A: No. Both parts use identical 1411 (3528 Metric) package dimensions: 0.138" L x 0.110" W (3.50mm x 2.80mm) with maximum seated height of 0.083" (2.10mm). PCB footprints, land patterns, and assembly processes remain unchanged.

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

A: Yes. Both the T491B475K010AT4513 and T495B475K010ATE1K3 carry MSL (Moisture Sensitivity Level) 1, indicating unlimited shelf life without moisture control requirements.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 Compliant and REACH Unaffected. They maintain identical regulatory status for use in regulated industries and applications requiring environmental compliance documentation.

Q: Is there a supply chain advantage to selecting the substitute part?

A: The T495B475K010ATE1K3 maintains higher inventory availability (5072 pieces vs. 1184 pieces), which may provide supply chain advantages for high-volume production requirements.