Equivalent & Substitute Parts for TE Connectivity 4-1879062-6

Part Overview

The TE Connectivity 4-1879062-6 is a 1.5 µF molded tantalum capacitor rated for 20 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility while meeting the same functional specifications for capacitance, voltage rating, and package dimensions.

Key Parameters

Parameter	Value
Capacitance	1.5 µF
Tolerance	±20%
Voltage - Rated	20 V
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 125°C
ESR (Equivalent Series Resistance)	4.5 Ohm
Type	Molded Tantalum

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 4-1879062-6 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Electrical Specifications): Parts that maintain the same capacitance (1.5 µF), tolerance (±20%), voltage rating (20 V), package (1206), and operating temperature range (-55°C ~ 125°C). These parts are interchangeable without circuit redesign.

Upgraded Substitutes (Enhanced Voltage Rating): Parts that exceed the original voltage specification (35 V rated versus 20 V rated) while maintaining identical capacitance, tolerance, package, and temperature range. These parts provide additional design margin and are electrically compatible in applications requiring the original 20 V rating.

The critical parameters determining substitution eligibility are:

Capacitance value (1.5 µF)
Package dimensions (1206 / 3216 Metric)
Voltage rating (minimum 20 V)
Operating temperature range (-55°C ~ 125°C)
Surface mount compatibility

Parameter Comparison

Parameter	4-1879062-6 (TE Connectivity)	293D155X0020A2TE3 (Vishay Sprague)	TAJS155M020RNJ (KYOCERA AVX)	F951V155MAAAQ2 (KYOCERA AVX)	F951V155KAAAQ2 (KYOCERA AVX)
Manufacturer	TE Connectivity	Vishay Sprague	KYOCERA AVX	KYOCERA AVX	KYOCERA AVX
Capacitance	1.5 µF	1.5 µF	1.5 µF	1.5 µF	1.5 µF
Tolerance	±20%	±20%	±20%	±20%	±10%
Voltage - Rated	20 V	20 V	20 V	35 V	35 V
Type	Molded	Molded	Molded	Conformal Coated	Conformal Coated
ESR (Equivalent Series Resistance)	4.5 Ohm	6.3 Ohm	5.4 Ohm	4.4 Ohm	4.4 Ohm
Package / Case	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)
Size / Dimension	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.126" L x 0.067" W (3.20mm x 1.70mm)	0.126" L x 0.067" W (3.20mm x 1.70mm)
Height - Seated (Max)	0.071" (1.80mm)	0.071" (1.80mm)	0.047" (1.20mm)	0.063" (1.60mm)	0.063" (1.60mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications):

The Vishay Sprague 293D155X0020A2TE3 and KYOCERA AVX TAJS155M020RNJ are direct substitutes for the TE Connectivity 4-1879062-6. Both parts maintain identical capacitance (1.5 µF), tolerance (±20%), voltage rating (20 V), package (1206), and operating temperature range (-55°C ~ 125°C). Both substitute parts are active products with ROHS3 compliance, ensuring long-term availability and regulatory conformance. The 293D155X0020A2TE3 maintains the same physical dimensions and height as the original part. The TAJS155M020RNJ offers a reduced seated height (0.047" versus 0.071"), which may provide design flexibility in space-constrained applications.

Upgraded Substitutes (Enhanced Voltage Rating):

The KYOCERA AVX F951V155MAAAQ2 and F951V155KAAAQ2 are upgraded substitutes with 35 V voltage ratings, providing additional design margin while maintaining the same 1.5 µF capacitance and 1206 package. The F951V155MAAAQ2 matches the original ±20% tolerance, while the F951V155KAAAQ2 offers improved ±10% tolerance. Both parts are conformal coated variants with active product status and ROHS3 compliance. These parts feature slightly reduced ESR (4.4 Ohm) compared to the original specification (4.5 Ohm), resulting in improved electrical performance. The conformal coating provides enhanced environmental protection. Moisture sensitivity level (MSL 3) requires controlled storage conditions during handling.

Selection Criteria:

For applications requiring exact electrical and mechanical equivalence, select either the 293D155X0020A2TE3 or TAJS155M020RNJ. For applications where increased voltage margin is beneficial, select the F951V155MAAAQ2 or F951V155KAAAQ2. All substitute parts are active products with current manufacturing support and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the F951V155MAAAQ2 (35 V rated) be used in place of the 4-1879062-6 (20 V rated)?

A: Yes. The F951V155MAAAQ2 maintains the same 1.5 µF capacitance, ±20% tolerance, 1206 package, and -55°C ~ 125°C operating temperature range. The higher voltage rating (35 V) is compatible with applications designed for 20 V operation and provides additional design margin.

Q: What is the difference between molded and conformal coated tantalum capacitors?

A: The original 4-1879062-6 is a molded tantalum capacitor. The F951V155MAAAQ2 and F951V155KAAAQ2 are conformal coated variants. Conformal coating provides enhanced environmental protection and moisture resistance. Both types are functionally equivalent for the specified electrical parameters.

Q: Does the TAJS155M020RNJ fit in the same PCB footprint as the 4-1879062-6?

A: Yes. Both parts use the 1206 (3216 Metric) package with identical length (0.126") and width (0.063"). The TAJS155M020RNJ has a reduced seated height (0.047" versus 0.071"), which does not affect footprint compatibility but may provide additional clearance in space-constrained designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 293D155X0020A2TE3, TAJS155M020RNJ, F951V155MAAAQ2, and F951V155KAAAQ2 are all ROHS3 compliant. The original 4-1879062-6 does not specify RoHS status.

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

A: The original 4-1879062-6 and 293D155X0020A2TE3 have MSL 1 (unlimited moisture sensitivity), requiring no special storage conditions. The TAJS155M020RNJ also has MSL 1. The F951V155MAAAQ2 and F951V155KAAAQ2 have MSL 3 (168 hours), requiring controlled storage and handling to prevent moisture absorption during manufacturing.

Q: Which substitute offers the lowest ESR?

A: The F951V155MAAAQ2 and F951V155KAAAQ2 both offer 4.4 Ohm ESR, compared to the original 4.5 Ohm specification. The TAJS155M020RNJ offers 5.4 Ohm ESR, and the 293D155X0020A2TE3 offers 6.3 Ohm ESR.

Q: Can I use the F951V155KAAAQ2 (±10% tolerance) instead of the 4-1879062-6 (±20% tolerance)?

A: Yes. The F951V155KAAAQ2 maintains tighter tolerance (±10%) than the original specification (±20%), providing improved capacitance accuracy. This part is electrically compatible and offers enhanced performance characteristics.

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