Equivalent & Substitute Parts for TE Connectivity 1-1879063-9

Part Overview

The TE Connectivity 1-1879063-9 is a 6.8 µF molded tantalum capacitor rated at 6.3 V with a 1411 (3528 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and maintenance applications. The substitute part identified maintains identical capacitance, tolerance, package dimensions, and ESR characteristics while offering an upgraded voltage rating and active product status.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	6.8 µF	Must match exactly
Tolerance	±10%	Must match exactly
Voltage Rating	6.3 V	Substitute must equal or exceed
Package / Case	1411 (3528 Metric)	Must match exactly for PCB compatibility
ESR (Equivalent Series Resistance)	1.2 Ohm	Must match exactly
Mounting Type	Surface Mount	Must match exactly
Operating Temperature Range	-55°C ~ 125°C	Must match or exceed
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Must match or be less restrictive

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 1-1879063-9 is based on strict electrical and mechanical parameter matching. The primary substitute, Vishay Sprague TR3B685K025C1200, qualifies as a direct equivalent because it maintains:

Matching Parameters:

Capacitance: 6.8 µF (identical)
Tolerance: ±10% (identical)
Package: 1411 (3528 Metric) (identical)
ESR: 1.2 Ohm (identical)
Mounting Type: Surface Mount (identical)
Operating Temperature: -55°C ~ 125°C (identical)
Moisture Sensitivity Level: 1 (Unlimited) (identical)
Physical Dimensions: 0.138" L x 0.110" W, 0.083" Max Height (identical)

Upgraded Parameter:

Voltage Rating: 25 V (exceeds original 6.3 V requirement)

The voltage rating upgrade from 6.3 V to 25 V represents a beneficial substitution characteristic, as the substitute part operates safely in all applications designed for the original 6.3 V component while providing enhanced voltage margin.

Parameter Comparison

Parameter	TE Connectivity 1-1879063-9	Vishay Sprague TR3B685K025C1200	Match Status
Capacitance	6.8 µF	6.8 µF	Identical
Tolerance	±10%	±10%	Identical
Voltage - Rated	6.3 V	25 V	Substitute Exceeds
Type	Molded	Molded	Identical
ESR (Equivalent Series Resistance)	1.2 Ohm	1.2 Ohm	Identical
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	1411 (3528 Metric)	1411 (3528 Metric)	Identical
Size / Dimension	0.138" L x 0.110" W (3.50mm x 2.80mm)	0.138" L x 0.110" W (3.50mm x 2.80mm)	Identical
Height - Seated (Max)	0.083" (2.10mm)	0.083" (2.11mm)	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute Active
REACH Status	REACH Unaffected	REACH Unaffected	Identical
ECCN	EAR99	EAR99	Identical

Engineering Selection Recommendations

The Vishay Sprague TR3B685K025C1200 is the qualified substitute for the obsolete TE Connectivity 1-1879063-9 based on the following engineering criteria:

Product Status Compliance: The substitute part carries Active product status, ensuring continued availability and manufacturer support, whereas the original part is classified as Obsolete.

Electrical Equivalence: All critical electrical parameters match the original specification. The capacitance value of 6.8 µF, tolerance of ±10%, and ESR of 1.2 Ohm are identical. The voltage rating upgrade from 6.3 V to 25 V provides additional operational margin without introducing incompatibility.

Mechanical Compatibility: The 1411 (3528 Metric) package dimensions and surface mount configuration are identical, ensuring direct PCB footprint compatibility without layout modifications.

Environmental and Regulatory Compliance: Both parts maintain identical operating temperature ranges (-55°C ~ 125°C), Moisture Sensitivity Level 1 (Unlimited), REACH Unaffected status, and EAR99 ECCN classification.

Packaging Availability: The substitute part is supplied in Tape & Reel (TR) packaging format, standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Sprague TR3B685K025C1200 be used as a direct replacement for the TE Connectivity 1-1879063-9 in existing designs?

A: Yes. The substitute part maintains identical capacitance (6.8 µF), tolerance (±10%), package dimensions (1411/3528 Metric), ESR (1.2 Ohm), and operating temperature range (-55°C ~ 125°C). The PCB footprint and electrical performance are equivalent.

Q: Why is the voltage rating different between the original and substitute part?

A: The substitute part is rated at 25 V compared to the original 6.3 V rating. This represents an upgrade that provides additional voltage margin. The substitute operates safely in all applications designed for 6.3 V operation.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both parts 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 substitute), representing negligible difference within manufacturing tolerance.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.

Q: Does the substitute part meet the same regulatory and compliance requirements?

A: Yes. Both parts are REACH Unaffected and classified as EAR99 for export control purposes. Regulatory compliance is maintained.

Q: What is the difference between the packaging formats?

A: The original part is listed with standard packaging notation, while the substitute is supplied in Tape & Reel (TR) format. Tape & Reel is the standard production packaging for surface mount components and is compatible with automated assembly equipment.

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