T494A476M006AS Equivalent & Substitute Parts

Part Overview

The T494A476M006AS is a 47 µF molded tantalum capacitor manufactured by KEMET, rated for 6.3 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability in the market. The identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this capacitor specification.

Substiute Parts

T494A476M006AS

KEMETIn Stock: 952T494A476M006AS Datasheet

Current PartRFQ

T494A476M006AT

KEMETIn Stock: 3222T494A476M006AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T494A476M006AS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 47 µF (exact match required)
• Voltage rating: 6.3 V (exact match required)
• Tolerance: ±20% (exact match required)
• ESR: 2.5 Ohm (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match required)
• Lifetime specification: 2000 Hrs @ 125°C (exact match required)

Mechanical Parameters:

• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Physical dimensions: 0.126" L x 0.063" W, height 0.071" max (exact match required)
• Manufacturer size code: A (exact match required)

Environmental & Compliance Parameters:

• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• Type: Molded Tantalum (exact match required)

The substitute part T494A476M006AT meets all specified electrical, mechanical, and environmental parameters. The primary distinction is product status and packaging configuration, with the substitute part classified as active production and available in Cut Tape (CT) & Digi-Reel® packaging.

Parameter Comparison

Engineering Selection Recommendations

The T494A476M006AT is the direct substitute for the obsolete T494A476M006AS. Selection of the substitute part is based on the following factors:

Product Status: The main part T494A476M006AS is classified as obsolete with no ongoing production. The substitute part T494A476M006AT maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance Status: The substitute part T494A476M006AT is ROHS3 compliant, whereas the main part is RoHS non-compliant. For applications subject to RoHS regulations or requiring compliance with current environmental standards, the substitute part satisfies these requirements.

Electrical and Mechanical Equivalence: All critical electrical parameters (capacitance, voltage rating, tolerance, ESR, operating temperature range, and lifetime specification) are identical between the main part and substitute. All mechanical parameters (package type, dimensions, height, and mounting configuration) are identical, ensuring direct pin-for-pin and form-factor compatibility.

Packaging Availability: The substitute part is available in Cut Tape (CT) & Digi-Reel® packaging, providing flexible procurement options for both prototype and production quantities.

For applications currently utilizing the T494A476M006AS, direct substitution with T494A476M006AT is supported without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can T494A476M006AT be used as a direct replacement for T494A476M006AS?

A: Yes. The T494A476M006AT is electrically and mechanically equivalent to the T494A476M006AS. All critical parameters including capacitance (47 µF), voltage rating (6.3 V), tolerance (±20%), ESR (2.5 Ohm), operating temperature range (-55°C ~ 125°C), and package dimensions (1206 / 3216 Metric) are identical. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The T494A476M006AS is classified as obsolete with discontinued production. The T494A476M006AT is the active production equivalent, ensuring ongoing availability and supply chain reliability.

Q: Are there compliance differences between the two parts?

A: Yes. The T494A476M006AT is ROHS3 compliant, while the T494A476M006AS is RoHS non-compliant. For applications subject to RoHS regulations, the substitute part satisfies current environmental compliance requirements.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions: 0.126" L x 0.063" W (3.20mm x 1.60mm) with a maximum seated height of 0.071" (1.80mm). Both use the 1206 (3216 Metric) package and surface mount configuration. No PCB layout modifications are necessary.

Q: What packaging options are available for the substitute part?

A: The T494A476M006AT is available in Cut Tape (CT) & Digi-Reel® packaging, providing flexibility for both prototype development and high-volume production procurement.

Q: Are the electrical performance characteristics identical?

A: Yes. Both parts are specified with identical ESR (2.5 Ohm), operating temperature range (-55°C ~ 125°C), and lifetime rating (2000 Hrs @ 125°C). Electrical performance in circuit applications is equivalent.

Q: Is the moisture sensitivity level the same?

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