TE Connectivity 2-1676904-5 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2-1676904-5 is a 4.7 µF molded tantalum capacitor rated at 20 V with ±20% tolerance in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part features 6Ohm equivalent series resistance (ESR) and operates across the temperature range of -55°C to 125°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	2-1676904-5
Manufacturer	TE Connectivity Passive Product
Capacitance	4.7 µF
Tolerance	±20%
Voltage - Rated	20 V
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	6 Ohm
Operating Temperature	-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)
Manufacturer Size Code	A
Features	General Purpose
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8532.21.0050

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 2-1676904-5 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: ±20% (exact match required)
Voltage Rating: 20 V minimum (equal or higher voltage rating acceptable)
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:

ESR (Equivalent Series Resistance): Variation permitted within component specifications
Manufacturer: Multiple qualified manufacturers available
Product Status: Active status preferred for obsolete parts

Substitute parts are grouped into two categories:

Upgrade Substitutes: Parts with higher voltage rating (25 V) that maintain all other critical parameters, providing enhanced voltage margin.

Similar Substitutes: Parts with identical electrical specifications (4.7 µF, ±20%, 20 V) and identical package dimensions, varying only in ESR characteristics and manufacturer.

Parameter Comparison

Parameter	2-1676904-5 (TE)	T491A475M025AT (KEMET)	293D475X0020A2TE3 (Vishay)	593D475X0020A2TE3 (Vishay)	TAJA475M020RNJ (KYOCERA AVX)	TAJA475M020SNJ (KYOCERA AVX)	TPSA475M020R1800 (KYOCERA AVX)	TR3A475M020C1800 (Vishay)	TR3A475M020C3500 (Vishay)
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	20 V	25 V	20 V	20 V	20 V	20 V	20 V	20 V	20 V
Type	Molded	Molded	Molded	Molded	Molded	Molded	Molded	Molded	Molded
ESR (Equivalent Series Resistance)	6 Ohm	6 Ohm	5 Ohm	3.5 Ohm	4 Ohm	4 Ohm	1.8 Ohm	1.8 Ohm	3.5 Ohm
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	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 0.063" 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 0.063" 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)
Height - Seated (Max)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)	0.071" (1.80mm)
Manufacturer Size Code	A	A	A	A	A	A	A	A	A
Features	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050	8532.21.0050

Engineering Selection Recommendations

Upgrade Substitute - KEMET T491A475M025AT:

The KEMET T491A475M025AT provides an upgrade path for the obsolete TE Connectivity 2-1676904-5. This part maintains identical capacitance (4.7 µF), tolerance (±20%), package dimensions (1206/3216 Metric), and ESR (6 Ohm) while offering an elevated voltage rating of 25 V compared to the original 20 V specification. The part is currently active in production status and carries ROHS3 compliance certification. The 2000 Hrs @ 125°C lifetime specification provides documented reliability data. This substitute is suitable for direct replacement in applications where the higher voltage rating does not create design conflicts.

Similar Substitutes - Direct Electrical Equivalents:

Seven active substitute parts maintain identical electrical specifications (4.7 µF, ±20%, 20 V) and package geometry:

Vishay Sprague 293D475X0020A2TE3: 5 Ohm ESR, TANTAMOUNT™ 293D series, ROHS3 compliant, 1400 Pcs inventory
Vishay Sprague 593D475X0020A2TE3: 3.5 Ohm ESR, TANTAMOUNT™ 593D series, ROHS3 compliant, 1161 Pcs inventory
KYOCERA AVX TAJA475M020RNJ: 4 Ohm ESR, TAJ series, ROHS3 compliant, 2400 Pcs inventory (Cut Tape & Digi-Reel®)
KYOCERA AVX TAJA475M020SNJ: 4 Ohm ESR, TAJ series, ROHS3 compliant, 887 Pcs inventory (Tape & Reel)
KYOCERA AVX TPSA475M020R1800: 1.8 Ohm ESR, TPS series, ROHS3 compliant, 13696 Pcs inventory (highest stock availability)
Vishay Sprague TR3A475M020C1800: 1.8 Ohm ESR, TANTAMOUNT™ TR3 series, ROHS3 compliant, 1188 Pcs inventory
Vishay Sprague TR3A475M020C3500: 3.5 Ohm ESR, TANTAMOUNT™ TR3 series, ROHS3 compliant, 1124 Pcs inventory

All substitute parts are active in production status, ROHS3 compliant, and carry REACH Unaffected and EAR99 classifications matching the original part. Selection among similar substitutes should be based on ESR requirements for the specific application circuit, packaging format preference (Cut Tape vs. Tape & Reel), and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the KEMET T491A475M025AT be used as a direct replacement for the TE Connectivity 2-1676904-5?

A: Yes. The KEMET T491A475M025AT is electrically and mechanically compatible. It maintains the same capacitance (4.7 µF), tolerance (±20%), package (1206/3216 Metric), and ESR (6 Ohm). The 25 V voltage rating exceeds the original 20 V specification, providing additional voltage margin. Both parts are surface mount components with identical physical dimensions and height specifications.

Q: What is the difference between the similar substitute parts?

A: The seven similar substitutes all share identical electrical specifications (4.7 µF, ±20%, 20 V) and package dimensions. The primary difference is equivalent series resistance (ESR), which ranges from 1.8 Ohm to 5 Ohm. Lower ESR values reduce heat dissipation and improve high-frequency performance. Selection depends on circuit requirements for ripple current handling and frequency response characteristics.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification. The original TE Connectivity 2-1676904-5 does not specify RoHS status, but all active replacements meet current RoHS3 requirements.

Q: What packaging formats are available for the substitute parts?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). KYOCERA AVX TAJA475M020RNJ and TAJA475M020SNJ offer both formats. Tape & Reel packaging is standard for high-volume production assembly. Cut Tape & Digi-Reel® format is suitable for lower-volume or prototype applications.

Q: Which substitute part has the highest inventory availability?

A: KYOCERA AVX TPSA475M020R1800 has the highest inventory with 13696 Pcs in stock. This part also features the lowest ESR at 1.8 Ohm, making it suitable for applications requiring minimal impedance characteristics.

Q: Are all substitute parts rated for the same operating temperature range?

A: Yes. All substitute parts operate across the identical temperature range of -55°C to 125°C, matching the original TE Connectivity 2-1676904-5 specification.

Q: Can I use a substitute part with lower ESR than the original?

A: Yes. Lower ESR values are generally beneficial for circuit performance, reducing impedance and heat generation. Parts with 1.8 Ohm ESR (TPSA475M020R1800 and TR3A475M020C1800) provide improved performance compared to the original 6 Ohm specification. Circuit design validation is not required for this substitution direction.

Q: What is the moisture sensitivity level for all substitute parts?

A: All substitute parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions. Storage and handling requirements are identical to the original part.

Q: Are all substitute parts REACH compliant?

A: Yes. All substitute parts carry REACH Unaffected status, matching the original TE Connectivity 2-1676904-5. No additional regulatory documentation is required for substitution.

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