1-1879062-1 Equivalent & Substitute Parts

Part Overview

The 1-1879062-1 is a 4.7 µF molded tantalum capacitor manufactured by TE Connectivity Passive Product, rated at 6.3 V with ±10% tolerance in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary due to the obsolete status of the original manufacturer part number, requiring sourcing from active product lines that maintain identical or enhanced electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Tolerance	±10%
Voltage - Rated	6.3 V
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	3.5 Ohm
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	1206 (3216 Metric)
Size / Dimension	0.126" L x 0.063" W (3.20mm x 1.60mm)
Height - Seated (Max)	0.071" (1.80mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1-1879062-1 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Direct Substitution:

Capacitance: 4.7 µF (exact match required)
Tolerance: ±10% (exact match required)
Package / Case: 1206 (3216 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Type: Molded Tantalum (exact match required)

Parameters Allowing Variation:

Voltage - Rated: Substitute parts with equal or higher voltage ratings are acceptable
ESR (Equivalent Series Resistance): Substitute parts with equal or lower ESR values are acceptable
Height - Seated (Max): Substitute parts with equal or lower height are acceptable
Manufacturer: Different manufacturers are acceptable provided all critical parameters match

Substitute parts are categorized into two groups: Upgrade parts (higher voltage rating with identical ESR) and Similar parts (matching voltage rating with variations in ESR or height).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage - Rated	ESR (Ohm)	Package / Case	Height - Seated (Max)	Product Status
1-1879062-1	TE Connectivity Passive Product	4.7 µF	±10%	6.3 V	3.5	1206 (3216 Metric)	0.071" (1.80mm)	Obsolete
593D475X9020A2TE3	Vishay Sprague	4.7 µF	±10%	20 V	3.5	1206 (3216 Metric)	0.071" (1.80mm)	Active
TR3A475K020C3500	Vishay Sprague	4.7 µF	±10%	20 V	3.5	1206 (3216 Metric)	0.071" (1.80mm)	Active
TR3A475K025C3500	Vishay Sprague	4.7 µF	±10%	25 V	3.5	1206 (3216 Metric)	0.071" (1.80mm)	Active
293D475X96R3A2TE3	Vishay Sprague	4.7 µF	±10%	6.3 V	5.5	1206 (3216 Metric)	0.071" (1.80mm)	Active
TAJA475K006RNJ	KYOCERA AVX	4.7 µF	±10%	6.3 V	6	1206 (3216 Metric)	0.071" (1.80mm)	Active
TAJS475K006A	KYOCERA AVX	4.7 µF	±10%	6.3 V	7.5	1206 (3216 Metric)	0.047" (1.20mm)	Active
TAJS475K006RNJ	KYOCERA AVX	4.7 µF	±10%	6.3 V	7.5	1206 (3216 Metric)	0.047" (1.20mm)	Active

Engineering Selection Recommendations

Upgrade Substitutes (Higher Voltage Rating):

The parts 593D475X9020A2TE3, TR3A475K020C3500, and TR3A475K025C3500 are manufactured by Vishay Sprague and classified as active products. These upgrade substitutes provide higher voltage ratings (20 V and 25 V respectively) while maintaining identical capacitance, tolerance, ESR, and package specifications. The upgrade substitutes are ROHS3 compliant and REACH unaffected, providing enhanced regulatory compliance compared to the obsolete original part.

Similar Substitutes (Matching Voltage Rating):

The parts 293D475X96R3A2TE3, TAJA475K006RNJ, TAJS475K006A, and TAJS475K006RNJ are active products that match the 6.3 V voltage rating of the original part. These similar substitutes maintain the 4.7 µF capacitance, ±10% tolerance, and 1206 package specification. Variations exist in ESR values (5.5 Ohm to 7.5 Ohm) and seated height (0.047" to 0.071"). All similar substitutes are ROHS3 compliant and REACH unaffected.

Selection Criteria:

For applications requiring identical ESR performance (3.5 Ohm), select upgrade substitutes 593D475X9020A2TE3 or TR3A475K020C3500
For applications with voltage headroom available, upgrade substitutes provide superior product status and compliance
For space-constrained applications, TAJS475K006A and TAJS475K006RNJ offer reduced seated height (0.047")
All substitute parts maintain the -55°C ~ 125°C operating temperature range and MSL 1 rating

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original 1-1879062-1?

A: Yes. Substitute parts with equal or higher voltage ratings are acceptable for direct replacement. The upgrade substitutes 593D475X9020A2TE3, TR3A475K020C3500, and TR3A475K025C3500 provide 20 V and 25 V ratings respectively, which are compatible with applications designed for the 6.3 V original part.

Q: What is the significance of ESR variation among substitute parts?

A: ESR (Equivalent Series Resistance) affects capacitor performance in high-frequency applications and ripple current handling. The original part specifies 3.5 Ohm ESR. Substitute parts with equal or lower ESR values (3.5 Ohm) are preferred for identical performance. Similar substitutes with higher ESR values (5.5 Ohm to 7.5 Ohm) are acceptable for general-purpose applications where ESR is not a critical parameter.

Q: Are there package compatibility concerns between substitute parts?

A: All substitute parts use the 1206 (3216 Metric) surface mount package, ensuring PCB footprint compatibility. However, seated height varies between 0.047" (1.20mm) and 0.071" (1.80mm). For applications with height constraints, verify that the substitute part's maximum seated height does not exceed available clearance.

Q: What is the difference between upgrade and similar substitutes?

A: Upgrade substitutes (593D475X9020A2TE3, TR3A475K020C3500, TR3A475K025C3500) provide higher voltage ratings while maintaining identical ESR and height specifications. Similar substitutes (293D475X96R3A2TE3, TAJA475K006RNJ, TAJS475K006A, TAJS475K006RNJ) match the original 6.3 V voltage rating but may have variations in ESR or height.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, providing regulatory compliance for modern manufacturing and distribution requirements.

Q: Why is the original 1-1879062-1 classified as obsolete?

A: The original part is obsolete product status from TE Connectivity Passive Product. Active substitute parts from Vishay Sprague and KYOCERA AVX provide equivalent or enhanced specifications with current manufacturing support and availability.

Q: Can I substitute TAJS475K006A or TAJS475K006RNJ if my application has height constraints?

A: Yes. TAJS475K006A and TAJS475K006RNJ feature a maximum seated height of 0.047" (1.20mm), compared to 0.071" (1.80mm) for the original part and most other substitutes. These parts are suitable for space-constrained applications, though ESR is higher at 7.5 Ohm.

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