TE Connectivity 4-1879063-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-1879063-6 is a 4.7 µF molded tantalum capacitor rated for 20 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 part operates across a temperature range of -55°C to 125°C with 1 Ohm equivalent series resistance and ±20% capacitance tolerance. Substitute parts are selected based on matching electrical specifications, mechanical dimensions, and mounting compatibility.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage Rating	20 V
Tolerance	±20%
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	1 Ohm
Operating Temperature Range	-55°C to 125°C
Package / Case	1411 (3528 Metric)
Mounting Type	Surface Mount
Physical Dimensions	0.138" L x 0.110" W (3.50mm x 2.80mm)
Height - Seated (Max)	0.083" (2.10mm)
Manufacturer Size Code	B
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 4-1879063-6 are categorized into two groups based on electrical and mechanical compatibility:

Direct Equivalents (Same Electrical Specifications): Direct substitutes maintain identical capacitance (4.7 µF), voltage rating (20 V), tolerance (±20%), ESR (1 Ohm), operating temperature range (-55°C to 125°C), and package dimensions (1411/3528 Metric). These parts are functionally interchangeable without circuit redesign. All direct equivalents are manufactured by Vishay Sprague and carry active product status with RoHS3 compliance.

Upgraded Alternatives (Enhanced Tolerance): Upgraded substitutes improve upon the original specification by reducing capacitance tolerance from ±20% to ±10%, while maintaining all other electrical parameters (4.7 µF, 20 V, 1 Ohm ESR, -55°C to 125°C). These parts are suitable for applications requiring tighter capacitance control. One upgraded option (TR3B475K025C1000) increases the voltage rating to 25 V, providing additional design margin while maintaining all other specifications.

Substitution compatibility is determined by the following parameters:

Capacitance value (4.7 µF)
Voltage rating (20 V minimum; 25 V acceptable for upgraded option)
Package / Case (1411/3528 Metric)
Mounting type (Surface Mount)
Operating temperature range (-55°C to 125°C)
ESR (1 Ohm)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	ESR	Package / Case	Height (Max)	Product Status	RoHS Status
4-1879063-6	TE Connectivity	4.7 µF	20 V	±20%	1 Ohm	1411 (3528 Metric)	0.083" (2.10mm)	Obsolete	REACH Unaffected
593D475X0020B2TE3	Vishay Sprague	4.7 µF	20 V	±20%	1 Ohm	1411 (3528 Metric)	0.083" (2.11mm)	Active	ROHS3 Compliant
TR3B475M020C1000	Vishay Sprague	4.7 µF	20 V	±20%	1 Ohm	1411 (3528 Metric)	0.083" (2.11mm)	Active	ROHS3 Compliant
593D475X9020B2TE3	Vishay Sprague	4.7 µF	20 V	±10%	1 Ohm	1411 (3528 Metric)	0.083" (2.11mm)	Active	ROHS3 Compliant
T494B475K020AT	KEMET	4.7 µF	20 V	±10%	1 Ohm	1411 (3528 Metric)	0.083" (2.10mm)	Active	ROHS3 Compliant
TR3B475K020C1000	Vishay Sprague	4.7 µF	20 V	±10%	1 Ohm	1411 (3528 Metric)	0.083" (2.11mm)	Active	ROHS3 Compliant
TR3B475K025C1000	Vishay Sprague	4.7 µF	25 V	±10%	1 Ohm	1411 (3528 Metric)	0.083" (2.11mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification Required):

Select either 593D475X0020B2TE3 or TR3B475M020C1000 from Vishay Sprague. Both parts maintain identical electrical specifications to the original TE Connectivity component (4.7 µF, 20 V, ±20% tolerance, 1 Ohm ESR) and are classified as active products with ROHS3 compliance. These parts are suitable for applications where the original ±20% tolerance specification is acceptable. Inventory availability is 731 units (593D475X0020B2TE3) and 957 units (TR3B475M020C1000).

For Enhanced Performance (Tighter Tolerance):

Select 593D475X9020B2TE3, T494B475K020AT, or TR3B475K020C1000 for applications requiring improved capacitance accuracy. These parts reduce tolerance to ±10% while maintaining all other electrical parameters. All three are active products with ROHS3 compliance. The 593D475X9020B2TE3 offers the highest inventory availability (3148 units). The T494B475K020AT from KEMET provides documented lifetime specification (2000 Hrs @ 125°C).

For Increased Voltage Margin:

Select TR3B475K025C1000 when circuit design permits operation at 25 V rating. This part combines enhanced tolerance (±10%) with increased voltage headroom while maintaining the same physical package and mounting compatibility. Product status is active with ROHS3 compliance and 734 units in inventory.

All recommended substitutes are surface mount components in the 1411 (3528 Metric) package, compatible with existing PCB layouts and assembly processes. Selection should be based on tolerance requirements, voltage margin needs, and inventory availability for the specific application.

Frequently Asked Questions (FAQ)

Q: Can I use the Vishay Sprague 593D475X0020B2TE3 as a direct replacement for the TE Connectivity 4-1879063-6?

A: Yes. The 593D475X0020B2TE3 is a direct equivalent with identical capacitance (4.7 µF), voltage rating (20 V), tolerance (±20%), ESR (1 Ohm), and package dimensions (1411/3528 Metric). Physical dimensions and mounting type are compatible with the original component.

Q: What is the difference between the direct equivalents and upgraded alternatives?

A: Direct equivalents (593D475X0020B2TE3, TR3B475M020C1000) maintain the original ±20% tolerance specification. Upgraded alternatives (593D475X9020B2TE3, T494B475K020AT, TR3B475K020C1000) improve tolerance to ±10%, providing tighter capacitance control. The TR3B475K025C1000 additionally increases voltage rating to 25 V.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance certification and REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: Will the substitute parts fit in the same PCB footprint?

A: Yes. All substitute parts use the 1411 (3528 Metric) package with identical surface mount dimensions (0.138" L x 0.110" W / 3.50mm x 2.80mm). Maximum seated height is 0.083" (2.10-2.11mm), compatible with existing PCB layouts.

Q: Which substitute offers the best inventory availability?

A: The Vishay Sprague 593D475X9020B2TE3 (upgraded tolerance, ±10%) offers the highest inventory with 3148 units in stock. This part also provides enhanced capacitance accuracy compared to the original specification.

Q: Can I use the 25 V rated TR3B475K025C1000 in a 20 V circuit?

A: Yes. The TR3B475K025C1000 is rated for 25 V operation and is suitable for 20 V circuits, providing additional voltage margin. All other electrical specifications (4.7 µF, ±10% tolerance, 1 Ohm ESR, -55°C to 125°C) remain compatible.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the same temperature range as the original component: -55°C to 125°C. This specification is maintained across all direct equivalents and upgraded alternatives.

Q: Is the KEMET T494B475K020AT suitable for high-reliability applications?

A: The T494B475K020AT provides documented lifetime specification of 2000 Hrs @ 125°C, making it suitable for applications requiring defined reliability metrics. It maintains all other electrical specifications (4.7 µF, 20 V, ±10% tolerance, 1 Ohm ESR) and is ROHS3 compliant.

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