Equivalent & Substitute Parts for 1-1879065-3

Part Overview

The TE Connectivity 1-1879065-3 is a 47 µF molded tantalum capacitor rated at 6.3 V with a 2917 (7343 Metric) package footprint. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across the temperature range of -55°C to 125°C and features a 220 mOhm equivalent series resistance (ESR) with ±10% capacitance tolerance.

Substiute Parts

1-1879065-3

TE Connectivity Passive ProductIn Stock: 8991-1879065-3 Datasheet

Current PartRFQ

T494D476K010AT

KEMETIn Stock: 2482T494D476K010AT Datasheet

UpgradeRFQ

293D476X96R3D2TE3

Vishay SpragueIn Stock: 29479293D476X96R3D2TE3 Datasheet

SimilarRFQ

592D476X96R3D2T15H

Vishay SpragueIn Stock: 826592D476X96R3D2T15H Datasheet

SimilarRFQ

T491D476K006AT

KEMETIn Stock: 1562T491D476K006AT Datasheet

SimilarRFQ

TAJD476K006RNJ

KYOCERA AVXIn Stock: 740TAJD476K006RNJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-1879065-3 is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance: 47 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 6.3 V minimum (equal or higher voltage ratings are acceptable)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Type: Molded or Conformal Coated tantalum (both acceptable for functional equivalence)

Secondary Compatibility Factors:

• ESR (Equivalent Series Resistance): Variations acceptable within circuit design tolerances
• Height - Seated: Minor variations acceptable if within PCB clearance specifications
• Manufacturer Size Code: D (consistent across all substitutes)
• Moisture Sensitivity Level: MSL 1 or MSL 2A acceptable for general applications

Substitute parts are grouped into two categories: Upgrade (higher voltage rating) and Similar (equivalent voltage rating with alternative ESR or coating specifications).

Parameter Comparison

Engineering Selection Recommendations

Upgrade Option:

The KEMET T494D476K010AT represents an upgrade substitute with a 10 V voltage rating compared to the original 6.3 V specification. This part maintains identical capacitance (47 µF), tolerance (±10%), ESR (220 mOhm), package footprint (2917), and operating temperature range. The T494D476K010AT is active in production status and ROHS3 compliant, providing long-term availability and regulatory compliance. The higher voltage rating provides additional design margin without affecting circuit functionality in applications rated for 6.3 V operation.

Direct Equivalent Options:

The KEMET T491D476K006AT, KYOCERA AVX TAJD476K006RNJ, and Vishay Sprague 293D476X96R3D2TE3 are direct voltage equivalents at 6.3 V with identical capacitance and tolerance specifications. All three are active in production status and ROHS3 compliant. The T491D476K006AT and 293D476X96R3D2TE3 feature higher ESR values (800 mOhm) compared to the original 220 mOhm specification. The TAJD476K006RNJ does not specify ESR in the provided data. These parts are suitable for applications where ESR variation is within circuit design tolerances.

Conformal Coated Alternative:

The Vishay Sprague 592D476X96R3D2T15H is a conformal coated variant with 6.3 V rating and 300 mOhm ESR. This part features a reduced height of 0.059" (1.50mm) compared to the original 0.118" (3.00mm) and a slightly increased length of 0.295" (7.50mm). The conformal coating provides enhanced environmental protection. Moisture sensitivity level is MSL 2A (4 Weeks) compared to MSL 1 (Unlimited) for other substitutes. This part is active in production status and ROHS3 compliant.

Selection Criteria:

• For applications requiring maximum ESR consistency with the original part, select T494D476K010AT (220 mOhm ESR, 10 V rating).
• For direct 6.3 V replacement with acceptable ESR variation, select T491D476K006AT, TAJD476K006RNJ, or 293D476X96R3D2TE3.
• For space-constrained designs with environmental protection requirements, select 592D476X96R3D2T15H.
• All substitute parts are active in production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the T494D476K010AT (10 V rating) be used in place of the 1-1879065-3 (6.3 V rating)?

A: Yes. The T494D476K010AT is a direct functional substitute with a higher voltage rating. In applications designed for 6.3 V operation, a 10 V rated capacitor provides additional voltage margin without affecting circuit performance. The capacitance, tolerance, ESR, package footprint, and operating temperature range are identical to the original part.

Q: What is the significance of ESR differences between substitute parts?

A: ESR (Equivalent Series Resistance) affects capacitor performance in high-frequency applications and ripple current handling. The original 1-1879065-3 specifies 220 mOhm ESR. Substitute parts with higher ESR values (such as 800 mOhm for T491D476K006AT and 293D476X96R3D2TE3) are acceptable if the circuit design tolerates this variation. The T494D476K010AT maintains the original 220 mOhm ESR specification.

Q: Are all substitute parts compatible with the original PCB layout?

A: The substitute parts maintain the 2917 (7343 Metric) package footprint and identical length and width dimensions (0.287" L x 0.169" W / 7.30mm x 4.30mm). Height variations exist: the original part is 0.118" (3.00mm), while most substitutes are 0.122" (3.10mm), and the 592D476X96R3D2T15H is 0.059" (1.50mm). These height differences are generally acceptable for standard PCB designs. The 592D476X96R3D2T15H has a slightly increased length of 0.295" (7.50mm), which should be verified against PCB layout constraints.

Q: What is the difference between molded and conformal coated tantalum capacitors?

A: Molded tantalum capacitors feature a standard plastic encapsulation. Conformal coated variants (such as the 592D476X96R3D2T15H) have an additional protective coating applied over the component, providing enhanced resistance to moisture and environmental contaminants. Conformal coated parts typically have higher moisture sensitivity levels (MSL 2A vs. MSL 1) and require controlled storage conditions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (T494D476K010AT, T491D476K006AT, TAJD476K006RNJ, 293D476X96R3D2TE3, and 592D476X96R3D2T15H) are ROHS3 compliant. The original 1-1879065-3 does not specify RoHS status in the provided data.

Q: What is the Moisture Sensitivity Level (MSL) and why does it matter?

A: MSL indicates the maximum time a component can be stored in ambient conditions (typically 30°C / 60% relative humidity) before requiring baking prior to soldering. MSL 1 (Unlimited) means no time restriction. MSL 2A (4 Weeks) requires baking if the component has been exposed to ambient conditions for more than 4 weeks. Most substitute parts are MSL 1, except the 592D476X96R3D2T15H which is MSL 2A. MSL 2A components require controlled storage and handling procedures.

Q: Which substitute part offers the best long-term availability?

A: All substitute parts are classified as active in production status, indicating ongoing manufacturing and availability. KEMET (T494D476K010AT, T491D476K006AT), KYOCERA AVX (TAJD476K006RNJ), and Vishay Sprague (293D476X96R3D2TE3, 592D476X96R3D2T15H) are established manufacturers with established supply chains. Selection should be based on circuit requirements and design specifications rather than availability alone.

Q: Can the TAJD476K006RNJ be used if ESR is not specified?

A: The TAJD476K006RNJ meets all critical substitution criteria: 47 µF capacitance, ±10% tolerance, 6.3 V rating, 2917 package, surface mount configuration, and -55°C to 125°C operating range. The absence of ESR specification in the provided data does not preclude its use. If ESR is a critical design parameter, the T491D476K006AT or 293D476X96R3D2TE3 (both 800 mOhm) or T494D476K010AT (220 mOhm) should be selected based on specific circuit requirements.