Equivalent & Substitute Parts for TE Connectivity 1-1879063-4

Part Overview

The TE Connectivity 1-1879063-4 is a 68 µF molded tantalum capacitor rated for 4 V operation in a 1411 (3528 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and maintenance applications. The original part features a ±20% capacitance tolerance and 2Ohm equivalent series resistance (ESR). Substitute parts are available from Vishay Sprague with improved specifications and active product status.

Substiute Parts

1-1879063-4

TE Connectivity Passive ProductIn Stock: 11011-1879063-4 Datasheet

Current PartRFQ

293D686X0004B2TE3

Vishay SpragueIn Stock: 1136293D686X0004B2TE3 Datasheet

DirectRFQ

293D686X9004B2TE3

Vishay SpragueIn Stock: 1120293D686X9004B2TE3 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1-1879063-4 is determined by strict equivalence in the following parameters:

Critical Matching Parameters:

• Capacitance: 68 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Package / Case: 1411 (3528 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Type: Molded Tantalum (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

Allowable Variation Parameters:

• Tolerance: ±20% to ±10% (tighter tolerance acceptable as upgrade)
• ESR: 2Ohm to 1.9Ohm (lower ESR acceptable as improvement)
• Product Status: Obsolete to Active (transition to active production parts)
• Compliance: ROHS3 Compliant (enhanced regulatory status)

Two substitute parts from Vishay Sprague meet these criteria. The 293D686X0004B2TE3 provides direct equivalence with identical tolerance. The 293D686X9004B2TE3 offers an upgraded specification with tighter ±10% tolerance while maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitution: The Vishay Sprague 293D686X0004B2TE3 serves as a direct functional equivalent to the TE Connectivity 1-1879063-4. Both parts share identical electrical specifications (68 µF, ±20% tolerance, 4 V rating) and mechanical dimensions. The substitute part is currently in active production status with ROHS3 compliance, addressing the obsolescence of the original component. The marginal ESR improvement (1.9Ohm versus 2Ohm) and identical MSL rating ensure seamless integration into existing designs.

Upgraded Specification Alternative: The Vishay Sprague 293D686X9004B2TE3 provides an upgraded specification option with tighter ±10% capacitance tolerance while maintaining all other critical parameters. This part is suitable for applications requiring enhanced capacitance accuracy. The active production status and ROHS3 compliance of this part also address obsolescence concerns.

Compliance and Regulatory Status: Both substitute parts maintain REACH Unaffected and EAR99 ECCN classifications consistent with the original part. The ROHS3 compliance of the Vishay substitutes represents an enhancement over the original specification, supporting modern regulatory requirements for electronic components.

Frequently Asked Questions (FAQ)

Q: Can the Vishay 293D686X0004B2TE3 be used as a direct replacement for the TE Connectivity 1-1879063-4?

A: Yes. The 293D686X0004B2TE3 is a direct equivalent. Both parts have identical capacitance (68 µF), voltage rating (4 V), tolerance (±20%), package (1411/3528 Metric), and operating temperature range (-55°C to 125°C). The substitute part is in active production, addressing the obsolete status of the original.

Q: What is the difference between the two Vishay substitute parts?

A: The 293D686X0004B2TE3 maintains ±20% tolerance matching the original part. The 293D686X9004B2TE3 offers upgraded ±10% tolerance for applications requiring tighter capacitance accuracy. Both parts share identical voltage rating, package, and operating temperature specifications.

Q: Are there any physical dimension differences between the original and substitute parts?

A: Physical dimensions are equivalent. Both the original TE Connectivity part and Vishay substitutes use the 1411 (3528 Metric) package with dimensions of 0.138" L x 0.110" W (3.50mm x 2.80mm). Maximum seated height is 0.083" (2.10mm for original, 2.11mm for substitutes), representing negligible variation within standard PCB assembly tolerances.

Q: Does the lower ESR of the substitute parts affect circuit performance?

A: The ESR reduction from 2Ohm to 1.9Ohm in the Vishay substitutes represents an improvement. Lower ESR reduces heat generation and improves high-frequency performance. This change is beneficial for circuit operation and does not introduce compatibility issues.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both Vishay Sprague substitute parts (293D686X0004B2TE3 and 293D686X9004B2TE3) are ROHS3 compliant. The original TE Connectivity part does not specify RoHS status. The compliance upgrade of the substitutes supports modern manufacturing and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts—the original TE Connectivity 1-1879063-4 and both Vishay substitutes—have MSL 1 (Unlimited). This classification indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The substitute parts are mechanically and electrically compatible with designs using the original TE Connectivity 1-1879063-4. No circuit modifications or PCB layout changes are required. The identical package, pin configuration, and electrical ratings ensure direct substitution.