TE Connectivity 104351-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 104351-3 is a rectangular connector header manufactured under the AMPMODU Mod II series. This through-hole connector features 6 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing and is designed for board-to-board or cable applications. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	104351-3
Manufacturer	TE Connectivity AMP Connectors
Category	Rectangular Connectors
Series	AMPMODU Mod II
Product Status	Obsolete
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	6
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Kinked Pin, Solder
Fastening Type	Push-Pull
Current Rating	3A
Voltage Rating	30VAC
Operating Temperature	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 104351-3 is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

Connector Type: Header, Breakaway (or Header)
Contact Type: Male Pin
Number of Positions: 6
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole
Fastening Type: Push-Pull
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

Current Rating: 3A (or unspecified in substitute)
Operating Temperature Range: -65°C ~ 105°C or broader
Contact Shape: Square
Insulation Color: Black
Style: Board to Board or Cable

Substitute parts are grouped into two categories: the TE Connectivity recommended upgrade (5-146256-3) and cross-manufacturer alternatives from Molex, 3M, and Amphenol ICC (FCI) that satisfy all primary matching criteria while maintaining functional equivalence.

Parameter Comparison

Parameter	104351-3 (Main)	5-146256-3 (TE Recommended)	0010897060 (Molex)	0702871099 (Molex)	2306-6121-TP (3M)	54102-G0803LF (Amphenol ICC)	67996-306HLF (Amphenol ICC)
Manufacturer	TE Connectivity	TE Connectivity	Molex	Molex	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	AMPMODU Mod II	AMPMODU Mod II	C-Grid 70280	C-Grid 70287	2300	BERGSTIK®	BERGSTIK® II
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	6	6	6	6	6	6	6
Number of Rows	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Kinked Pin, Solder	Solder	Solder	Kinked Pin, Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.120" (3.05mm)	0.120" (3.05mm)	0.107" (2.71mm)	0.125" (3.18mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.095" (2.41mm)
Overall Contact Length	0.440" (11.18mm)	0.440" (11.18mm)	0.437" (11.10mm)	0.455" (11.56mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.425" (10.80mm)
Insulation Height	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Tin-Lead	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin-Lead	Tin	Not specified
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Thermoplastic, Glass Filled	Not specified	Not specified
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black
Current Rating	3A	3A	Not specified	Not specified	3A	3A per Contact	3A per Contact
Voltage Rating	30VAC	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
Operating Temperature	-65°C ~ 105°C	-65°C ~ 105°C	Not specified	Not specified	-55°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 125°C
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 5-146256-3

The TE Connectivity 5-146256-3 is the direct upgrade path for the obsolete 104351-3. Both components share the AMPMODU Mod II series designation and maintain identical electrical and mechanical specifications for mating pitch, row spacing, contact dimensions, and current rating. The 5-146256-3 is currently in active production status with 2660 units in stock. The primary difference is the upgrade from Thermoplastic to Liquid Crystal Polymer (LCP) insulation material and achievement of RoHS Compliance, making this the preferred choice for new designs and production continuity.

Secondary Recommendations: Molex C-Grid Series

The Molex C-Grid 70280 and C-Grid 70287 series connectors (part numbers 0010897060, 0010897061, 0010897062, 0702800591, and 0702871099) provide cross-manufacturer equivalence with full ROHS3 Compliance. These parts maintain all critical mating parameters and are available in active production status. The Molex 0702871099 offers the closest feature alignment with kinked pin termination matching the original 104351-3. Molex alternatives feature Liquid Crystal Polymer (LCP) glass-filled insulation and extended operating temperature ranges to -65°C ~ 125°C.

Tertiary Recommendations: 3M and Amphenol ICC (FCI)

The 3M 2306-6121-TP maintains thermoplastic insulation similar to the original part and provides RoHS non-compliant status for legacy applications. The Amphenol ICC (FCI) BERGSTIK® series (54102-G0803LF) and BERGSTIK® II series (67996-306HLF) offer RoHS Compliant alternatives with extended operating temperature ranges to -65°C ~ 125°C and phosphor bronze contact material. These options are suitable for applications requiring enhanced thermal performance or specific contact material specifications.

Compliance Considerations:

For new designs, selection of RoHS Compliant alternatives (5-146256-3, Molex ROHS3 series, or Amphenol ICC RoHS Compliant options) is required in jurisdictions with RoHS regulations. The original 104351-3 and 3M 2306-6121-TP are RoHS non-compliant and suitable only for legacy production or applications exempt from RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 5-146256-3 directly replace the 104351-3 in existing designs?

A: Yes. The 5-146256-3 maintains identical mating pitch (0.100"), row spacing (0.100"), number of positions (6 in 2 rows), contact dimensions, current rating (3A), and operating temperature range (-65°C ~ 105°C). The primary differences are improved insulation material (LCP vs. Thermoplastic) and RoHS Compliance. No PCB layout modifications are required.

Q: What are the key differences between the TE Connectivity 5-146256-3 and Molex alternatives?

A: Both maintain identical mating parameters and push-pull fastening. The Molex C-Grid series features Liquid Crystal Polymer (LCP) glass-filled insulation and extended operating temperature to -65°C ~ 125°C. Contact length specifications vary slightly: Molex parts feature 0.240" mating contact length versus 0.230" for the TE part. These dimensional variations remain within acceptable tolerance for standard mating applications.

Q: Are there compatibility concerns with different contact materials?

A: The original 104351-3 uses copper alloy contacts, while Amphenol ICC (FCI) BERGSTIK® series use phosphor bronze. Both materials are compatible with standard mating connectors and provide equivalent electrical performance at the specified 3A current rating. Contact finish specifications (gold mating surface, tin post finish) are consistent across all recommended substitutes.

Q: Which substitute is best for RoHS-regulated applications?

A: The TE Connectivity 5-146256-3 is the recommended choice for RoHS-regulated applications, as it is the direct manufacturer upgrade with RoHS Compliance certification. Molex C-Grid series parts carry ROHS3 Compliance, and Amphenol ICC (FCI) BERGSTIK® series are RoHS Compliant. All three options satisfy RoHS requirements.

Q: What is the difference between kinked pin and standard solder termination?

A: The original 104351-3 features kinked pin termination, which provides mechanical retention during PCB assembly. The TE Connectivity 5-146256-3 uses standard solder termination. The Molex 0702871099 and 0702871001 retain kinked pin termination for applications requiring enhanced mechanical stability. Both termination types are functionally equivalent for electrical performance.

Q: Are there inventory considerations for substitute selection?

A: Current inventory levels are: 5-146256-3 (2660 units), Molex 0702871099 (871 units), Molex 0010897062 (5278 units), Amphenol ICC 54102-G0803LF (2329 units), and 3M 2306-6121-TP (713 units). For high-volume production, Molex 0010897062 offers the largest available stock.

Q: Can the 104351-3 be used interchangeably with the 3M 2306-6121-TP?

A: Yes, with minor dimensional considerations. Both maintain identical mating pitch, row spacing, and contact configuration. The 3M part features slightly higher insulation height (0.100" vs. 0.090") and overall contact length (0.450" vs. 0.440"), which remain compatible with standard mating connectors. The 3M part is RoHS non-compliant, matching the original part's compliance status.

Q: What is the significance of the contact finish thickness specifications?

A: Contact finish thickness affects durability and mating cycle life. The original 104351-3 specifies 15.0µin (0.38µm) gold mating finish. Molex alternatives offer 15.0µin to 30.0µin gold finish, and Amphenol ICC parts specify 30.0µin to 50.0µin, providing enhanced durability for high-cycle applications. All specifications meet standard connector performance requirements.

Q: Are there applications where the extended operating temperature range of Molex or Amphenol ICC parts is necessary?

A: The original 104351-3 and TE Connectivity 5-146256-3 operate from -65°C to 105°C. Molex and Amphenol ICC alternatives extend to -65°C to 125°C, providing 20°C additional high-temperature margin. This extended range is beneficial for automotive, industrial, and telecommunications applications subject to elevated ambient or component-generated heat.

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