Equivalent & Substitute Parts for 8-1676903-3

Part Overview

The TE Connectivity 8-1676903-3 is a 47 µF molded tantalum capacitor rated at 10 V with ±20% tolerance in a 2917 (7343 Metric) surface mount package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary due to the obsolete classification, which may result in limited availability or discontinuation of supply. Active alternative components from KYOCERA AVX provide functionally compatible solutions with enhanced specifications and current product status.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	10 V
Tolerance	±20%
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	900 mOhm
Package / Case	2917 (7343 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 125°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 8-1676903-3 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Capacitance: 47 µF (exact match required)
Package / Case: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
ESR: 900 mOhm (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Upgrade Parameters:

Voltage Rating: May be equal to or greater than 10 V
Tolerance: May be ±10% or ±20%
Product Status: Active status preferred over obsolete

All substitute parts listed maintain identical mechanical dimensions (0.287" L x 0.169" W / 7.30 mm x 4.30 mm) and electrical characteristics except where voltage rating or tolerance are upgraded. Substitute parts from KYOCERA AVX TAJ series provide active product status with RoHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	ESR	Package	Product Status	RoHS Status
8-1676903-3	TE Connectivity	47 µF	10 V	±20%	900 mOhm	2917 (7343)	Obsolete	REACH Unaffected
TAJD476K020RNJ	KYOCERA AVX	47 µF	20 V	±10%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJD476K025RNJ	KYOCERA AVX	47 µF	25 V	±10%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJD476M020RNJ	KYOCERA AVX	47 µF	20 V	±20%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJD476M025RNJ	KYOCERA AVX	47 µF	25 V	±20%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJX476K016RNJ	KYOCERA AVX	47 µF	16 V	±10%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJX476M016RNJ	KYOCERA AVX	47 µF	16 V	±20%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJX476M016YNJ	KYOCERA AVX	47 µF	16 V	±20%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJY476K020RNJ	KYOCERA AVX	47 µF	20 V	±10%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJY476K025RNJ	KYOCERA AVX	47 µF	25 V	±10%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant
TAJY476M020RNJ	KYOCERA AVX	47 µF	20 V	±20%	900 mOhm	2917 (7343)	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Selection Criteria:

All listed substitute parts are compatible with the 8-1676903-3 based on mandatory electrical and mechanical parameters. Selection among substitute parts should be based on the following factors:

Voltage Rating Considerations:

TAJX476K016RNJ, TAJX476M016RNJ, TAJX476M016YNJ: 16 V rating (exceeds 10 V requirement)
TAJD476K020RNJ, TAJY476K020RNJ, TAJD476M020RNJ, TAJY476M020RNJ: 20 V rating (exceeds 10 V requirement)
TAJD476K025RNJ, TAJY476K025RNJ, TAJD476M025RNJ: 25 V rating (exceeds 10 V requirement)

Tolerance Considerations:

±10% tolerance parts (TAJD476K020RNJ, TAJD476K025RNJ, TAJX476K016RNJ, TAJY476K020RNJ, TAJY476K025RNJ) provide tighter capacitance specification than the original ±20%
±20% tolerance parts (TAJD476M020RNJ, TAJD476M025RNJ, TAJX476M016RNJ, TAJX476M016YNJ, TAJY476M020RNJ) match the original tolerance specification

Product Status and Compliance: All substitute parts carry Active product status and RoHS3 compliance, providing supply continuity and regulatory alignment superior to the obsolete original component.

Inventory Availability: TAJY476M020RNJ offers the highest inventory level (1,000,400 pcs), followed by TAJD476M025RNJ (8,461 pcs) and TAJD476K025RNJ (5,931 pcs).

Frequently Asked Questions (FAQ)

Q: Can TAJY476M020RNJ directly replace 8-1676903-3 in my circuit?

A: Yes. TAJY476M020RNJ maintains identical capacitance (47 µF), ESR (900 mOhm), package (2917/7343 Metric), mounting type (Surface Mount), operating temperature range (-55°C to 125°C), and moisture sensitivity level (MSL 1). The 20 V rating exceeds the original 10 V specification, and the ±20% tolerance matches the original. This part is functionally compatible.

Q: What is the difference between TAJD, TAJX, and TAJY series parts?

A: The letter designation (D, X, Y) indicates the manufacturer size code, which correlates to different maximum seated heights: D series (3.10 mm), X series (1.50 mm), and Y series (2.00 mm). All maintain the same 2917 (7343 Metric) package footprint and are mechanically compatible for surface mount assembly. Selection should be based on available board space for component height.

Q: Why do some substitute parts have higher voltage ratings?

A: Higher voltage ratings (16 V, 20 V, 25 V) are allowable upgrades that do not compromise circuit compatibility. A capacitor rated for higher voltage can safely operate at lower voltages. This provides design margin and may improve reliability in the application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All KYOCERA AVX TAJ series substitute parts listed carry RoHS3 compliance status, whereas the original 8-1676903-3 is marked as REACH Unaffected. This represents an improvement in regulatory compliance for new designs or replacements.

Q: What is the significance of ±10% versus ±20% tolerance?

A: The original 8-1676903-3 carries ±20% tolerance, meaning the actual capacitance can vary from 37.6 µF to 56.4 µF. Substitute parts with ±10% tolerance (such as TAJD476K020RNJ) provide tighter capacitance specification, ranging from 42.3 µF to 51.7 µF. Selection depends on circuit requirements for capacitance accuracy.

Q: Can I use TAJX476K016RNJ as a direct replacement?

A: TAJX476K016RNJ is electrically and mechanically compatible with 8-1676903-3. However, the TAJX series has a maximum seated height of 1.50 mm compared to the original 3.00 mm. Verify that your PCB assembly process and available board space accommodate this lower profile before selection.

Q: What inventory levels should I consider for procurement?

A: TAJY476M020RNJ has the highest availability (1,000,400 pcs), making it suitable for high-volume production. TAJD476M025RNJ (8,461 pcs) and TAJD476K025RNJ (5,931 pcs) provide substantial inventory for medium-volume applications. Lower-inventory parts (TAJX476K016RNJ at 775 pcs, TAJX476M016RNJ at 805 pcs) are suitable for prototype or low-volume requirements.

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