TE Connectivity 4-1879064-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-1879064-4 is a 6.8 µF molded tantalum capacitor rated for 25 V operation in a 2312 (6032 Metric) surface mount package. This component is classified as obsolete product status. Due to its obsolete classification, equivalent substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for production and repair applications.

Substiute Parts

4-1879064-4

TE Connectivity Passive ProductIn Stock: 12314-1879064-4 Datasheet

Current PartRFQ

F911V685MCC

KYOCERA AVXIn Stock: 756F911V685MCC Datasheet

DirectRFQ

TPSC685M025R0600

KYOCERA AVXIn Stock: 1141TPSC685M025R0600 Datasheet

DirectRFQ

TPSC685K025R0600

KYOCERA AVXIn Stock: 721TPSC685K025R0600 Datasheet

UpgradeRFQ

293D685X0025C2TE3

Vishay SpragueIn Stock: 9257293D685X0025C2TE3 Datasheet

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593D685X0025C2TE3

Vishay SpragueIn Stock: 919593D685X0025C2TE3 Datasheet

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T491C685M025AT

KEMETIn Stock: 1214T491C685M025AT Datasheet

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T495C685M025ATE500

KEMETIn Stock: 891T495C685M025ATE500 Datasheet

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TAJC685M025RNJ

KYOCERA AVXIn Stock: 2664TAJC685M025RNJ Datasheet

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TAJC685M025SNJ

KYOCERA AVXIn Stock: 1051TAJC685M025SNJ Datasheet

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TAJW685M025RNJ

KYOCERA AVXIn Stock: 744TAJW685M025RNJ Datasheet

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TPSC685M025R0500

KYOCERA AVXIn Stock: 892TPSC685M025R0500 Datasheet

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TPSC685M025R0700

KYOCERA AVXIn Stock: 763TPSC685M025R0700 Datasheet

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TR3C685M025C0500

Vishay SpragueIn Stock: 876TR3C685M025C0500 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 4-1879064-4 are classified based on the following substitution criteria:

Primary Substitution Parameters:

• Capacitance: 6.8 µF (exact match required)
• Voltage Rating: 25 V minimum (equal or higher voltage rating acceptable)
• 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)
• Type: Molded Tantalum (exact match required)

Secondary Consideration Parameters:

• Tolerance: ±20% (primary specification; ±10% represents improved tolerance)
• ESR (Equivalent Series Resistance): 600 mOhm (reference value; variations acceptable within application requirements)
• Manufacturer Size Code: C (dimensional consistency indicator)

Grouping Categories:

Direct Equivalents (Identical Electrical Specifications): Parts matching all primary parameters with ±20% tolerance and 25 V rating.

Direct Substitutes with Higher Voltage Rating: Parts with identical electrical specifications except voltage rating of 35 V or higher, providing design margin.

Tolerance Upgrades: Parts with improved ±10% tolerance while maintaining all other primary specifications.

ESR Variants: Parts with different ESR values due to manufacturer design differences, maintaining all primary electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

TPSC685M025R0600 (KYOCERA AVX) is the primary direct equivalent substitute. This part maintains identical electrical specifications (6.8 µF, ±20%, 25 V, 600 mOhm ESR) and mechanical compatibility with the original TE Connectivity 4-1879064-4. The part is active product status with ROHS3 compliance, ensuring long-term availability and regulatory compliance. Height difference of 0.004" (0.10 mm) is within acceptable PCB assembly tolerances.

Secondary Recommendation - Tolerance Upgrade:

TPSC685K025R0600 (KYOCERA AVX) provides improved ±10% tolerance specification while maintaining all other primary parameters. This part is suitable for applications requiring tighter capacitance tolerance. Active product status and ROHS3 compliance are confirmed.

Higher Voltage Alternative:

F911V685MCC (KYOCERA AVX) offers 35 V rating with identical 6.8 µF capacitance and 600 mOhm ESR. This part provides additional voltage margin and is suitable for designs where higher voltage rating is acceptable. Active product status and ROHS3 compliance are confirmed.

Alternative Manufacturers:

Vishay Sprague 593D685X0025C2TE3 and KEMET T495C685M025ATE500 provide 500 mOhm ESR variants, offering lower equivalent series resistance. These parts are active with ROHS3 compliance and maintain all primary electrical and mechanical specifications.

All recommended substitute parts are active product status with ROHS3 compliance, ensuring regulatory compliance and component availability for current and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating than the original 4-1879064-4?

A: Yes. Parts with higher voltage ratings (such as F911V685MCC at 35 V) are electrically compatible substitutes. Higher voltage rating provides additional design margin and does not negatively impact circuit performance when the original 25 V specification is met.

Q: What is the significance of ESR (Equivalent Series Resistance) differences among substitute parts?

A: ESR affects capacitor performance in high-frequency applications and ripple current handling. The original part specifies 600 mOhm ESR. Substitute parts with lower ESR (500 mOhm) provide improved performance in ripple current applications. Parts with higher ESR (1.7 Ohm to 2 Ohm) remain functionally compatible but may exhibit different thermal characteristics under high-frequency stress.

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

A: All substitute parts use the 2312 (6032 Metric) package with identical footprint dimensions (0.236" L x 0.126" W / 6.00 mm x 3.20 mm). Height variations range from 0.059" to 0.110" (1.50 mm to 2.80 mm). The original part height is 0.106" (2.70 mm). Height differences up to 0.004" (0.10 mm) are within standard PCB assembly tolerances. TAJW685M025RNJ has significantly lower height (0.059") and requires clearance verification.

Q: What does ±20% tolerance mean compared to ±10% tolerance?

A: Tolerance specifies the acceptable capacitance variation from the nominal 6.8 µF value. ±20% tolerance allows capacitance between 5.44 µF and 8.16 µF. ±10% tolerance (TPSC685K025R0600) allows capacitance between 6.12 µF and 7.48 µF, providing tighter specification for applications requiring precise capacitance values.

Q: Why is the original TE Connectivity 4-1879064-4 classified as obsolete?

A: Obsolete product status indicates the manufacturer has discontinued production. Substitute parts from active manufacturers (KYOCERA AVX, KEMET, Vishay Sprague) provide equivalent functionality with confirmed ongoing availability and support.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant, meeting current regulatory requirements for hazardous substance restrictions. The original TE Connectivity part RoHS status is not specified in available documentation.

Q: Can I use TAJW685M025RNJ as a direct replacement despite its lower height?

A: TAJW685M025RNJ maintains identical electrical specifications and footprint dimensions but has significantly lower height (0.059" versus 0.106" original). Physical clearance verification is required to confirm compatibility with surrounding components and PCB assembly equipment.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited moisture sensitivity, meaning the component does not require special moisture control during storage, handling, or assembly. All listed parts maintain MSL 1 classification, ensuring compatibility with standard manufacturing processes.