TE Connectivity 1-104351-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-104351-3 is a rectangular connector header manufactured under the AMPMODU Mod II series. This through-hole vertical mount connector features 26 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	1-104351-3
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	26
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
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead
Operating Temperature	-65°C ~ 105°C
Current Rating	3A
Voltage Rating	30VAC
RoHS Status	RoHS non-compliant
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1-104351-3 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Number of Positions: 26
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header, Breakaway
Contact Type: Male Pin
Mounting Type: Through Hole
Fastening Type: Push-Pull
Contact Shape: Square
Insulation Height: 0.090" (2.29mm)
Material Flammability Rating: UL94 V-0
Insulation Color: Black

Allowable Variations:

Product Status: Active substitutes are preferred over obsolete
Termination: Solder or Kinked Pin, Solder acceptable
Contact Finish - Mating: Gold or Tin acceptable
Contact Finish - Post: Tin or Tin-Lead acceptable
Insulation Material: Thermoplastic or Liquid Crystal Polymer (LCP) acceptable
Contact Length - Mating: Minor variations within 0.230" to 0.240" range
Contact Length - Post: Variations from 0.107" to 0.175" acceptable
RoHS Status: Active substitutes with RoHS3 compliance preferred
Voltage Rating: Specifications of 30VAC or higher acceptable

Substitute parts are grouped by series family and contact finish specifications to facilitate selection based on design requirements and compliance mandates.

Parameter Comparison

Parameter	1-104351-3 (Main)	6-146256-3 (TE Conn)	0010897260 (Molex)	0010897261 (Molex)	0010897262 (Molex)	0702800601 (Molex)	0702800641 (Molex)	0702800681 (Molex)	0702871011 (Molex)	0702871109 (Molex)	0702871207 (Molex)
Manufacturer	TE Connectivity	TE Connectivity	Molex	Molex	Molex	Molex	Molex	Molex	Molex	Molex	Molex
Series	AMPMODU Mod II	AMPMODU Mod II	C-Grid 70280	C-Grid 70280	C-Grid 70280	C-Grid 70280	C-Grid 70280	C-Grid 70280	C-Grid 70287	C-Grid 70287	C-Grid 70287
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Number of Positions	26	26	26	26	26	26	26	26	26	26	26
Number of Rows	2	2	2	2	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)	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)	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	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Kinked Pin, Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Kinked Pin, Solder	Kinked Pin, Solder	Kinked Pin, Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Tin	Gold	Tin	Gold	Gold	Tin	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Insulation Material	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled
Insulation Height	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.120" (3.05mm)	0.120" (3.05mm)	0.107" (2.71mm)	0.107" (2.71mm)	0.107" (2.71mm)	0.175" (4.45mm)	0.175" (4.45mm)	0.175" (4.45mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Overall Contact Length	0.440" (11.18mm)	0.440" (11.18mm)	0.437" (11.10mm)	0.437" (11.10mm)	0.437" (11.10mm)	0.505" (12.83mm)	0.505" (12.83mm)	0.505" (12.83mm)	0.455" (11.56mm)	0.455" (11.56mm)	0.455" (11.56mm)

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 6-146256-3

The TE Connectivity 6-146256-3 is the direct active equivalent within the same AMPMODU Mod II series. This part maintains identical mechanical and electrical specifications to the 1-104351-3 while offering active product status and ROHS3 compliance. The primary difference is the substitution of Tin-Lead post finish with Tin post finish, which is acceptable for equivalent functionality. The insulation material upgrade from Thermoplastic to Liquid Crystal Polymer (LCP) provides enhanced thermal and mechanical performance. This part is the preferred choice for direct replacement in new designs and production continuity.

Secondary Recommendation: Molex C-Grid 70280 Series (0010897260, 0010897261, 0010897262)

The Molex C-Grid 70280 series parts provide cross-manufacturer substitution with active product status and ROHS3 compliance. These parts maintain all critical mechanical parameters including 26 positions, 2-row configuration, 0.100" pitch, and through-hole mounting. Contact length variations exist in the mating contact (0.240" versus 0.230"), which remains within acceptable tolerance ranges for standard connector applications. The C-Grid 70280 series offers multiple contact finish options (Gold or Tin mating finish) to accommodate specific design requirements. These parts are suitable for applications where cross-manufacturer sourcing is acceptable.

Tertiary Recommendation: Molex C-Grid 70280 Series with Extended Post Length (0702800601, 0702800641, 0702800681)

These variants feature extended contact post length (0.175" versus 0.120"), resulting in increased overall contact length (0.505" versus 0.440"). These parts are suitable only for applications where increased post length does not create mechanical interference with PCB layout or mating connector geometry. Selection of these parts requires confirmation that the extended post length is compatible with the target application.

Quaternary Recommendation: Molex C-Grid 70287 Series (0702871011, 0702871109, 0702871207)

The Molex C-Grid 70287 series maintains kinked pin termination consistent with the original 1-104351-3 design. These parts feature contact post length of 0.125" (3.18mm), which is intermediate between the original specification and the extended variants. The C-Grid 70287 series is appropriate for applications requiring kinked pin termination and represents a closer mechanical match to the original design. All variants in this series are ROHS3 compliant and active products.

Compliance Considerations:

All recommended substitute parts are ROHS3 compliant, addressing regulatory requirements that may not be met by the obsolete 1-104351-3. The transition from Tin-Lead to Tin post finish aligns with RoHS directives and represents standard industry practice. Designs currently utilizing the 1-104351-3 should transition to ROHS3-compliant alternatives to ensure long-term supply chain viability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 6-146256-3 be used as a direct replacement for the 1-104351-3?

A: Yes. The 6-146256-3 maintains identical mechanical and electrical specifications within the same AMPMODU Mod II series. The primary differences are product status (Active versus Obsolete), RoHS compliance (ROHS3 versus non-compliant), and insulation material (LCP versus Thermoplastic). These differences represent improvements and do not prevent direct substitution.

Q: What is the significance of the contact finish differences between the main part and substitutes?

A: The original 1-104351-3 features Gold mating contact finish with Tin-Lead post finish. Substitute parts offer Gold or Tin mating finish with Tin post finish. Gold mating finish provides superior corrosion resistance and is preferred for low-signal-level applications. Tin mating finish is acceptable for general-purpose applications and represents cost optimization. The elimination of Lead in post finish aligns with RoHS directives and does not compromise electrical performance in standard applications.

Q: Are Molex C-Grid 70280 and 70287 series parts mechanically compatible with the original TE Connectivity connector?

A: Molex C-Grid parts maintain identical pitch spacing (0.100"), row configuration (2 rows), position count (26), and mounting type (through-hole). Mechanical compatibility is confirmed for these critical parameters. Minor variations in contact length exist but remain within acceptable ranges for standard connector applications. Confirmation of mating connector compatibility is required for specific applications.

Q: What is the difference between the C-Grid 70280 and C-Grid 70287 series?

A: The primary difference is termination style. The C-Grid 70280 series features straight solder termination, while the C-Grid 70287 series features kinked pin solder termination. The original 1-104351-3 uses kinked pin termination, making the C-Grid 70287 series a closer mechanical match. Contact post length also differs: C-Grid 70280 variants range from 0.107" to 0.175", while C-Grid 70287 variants are 0.125". Selection depends on PCB layout requirements and termination preferences.

Q: Why do some Molex variants have extended contact post length (0.175")?

A: Extended post length variants (0702800601, 0702800641, 0702800681) are designed for applications requiring deeper PCB penetration or specific mating connector geometries. These parts are not direct replacements for the original 1-104351-3 and should be selected only when the extended post length is confirmed compatible with the target application. Verification of PCB thickness and mating connector specifications is required before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant. The original 1-104351-3 is RoHS non-compliant due to Tin-Lead post finish. Transition to ROHS3-compliant alternatives is necessary for regulatory compliance and long-term supply chain viability.

Q: What is the impact of insulation material change from Thermoplastic to Liquid Crystal Polymer (LCP)?

A: Liquid Crystal Polymer (LCP) provides enhanced thermal stability, improved mechanical strength, and superior dimensional stability compared to Thermoplastic. LCP insulation material is standard in modern connector designs and represents a performance improvement. No negative impact on compatibility or functionality results from this material upgrade.

Q: Can I mix and match contact finish options from different substitute parts?

A: No. Contact finish specifications are part-specific and cannot be mixed within a single connector assembly. Selection of a specific substitute part determines both mating and post contact finish. Confirmation that the selected finish specification meets application requirements is necessary before procurement.

Q: What inventory levels are available for substitute parts?

A: Inventory availability varies by part number. The TE Connectivity 6-146256-3 has 1578 units in stock. Molex C-Grid variants range from 648 to 1865 units in stock. Specific inventory confirmation should be obtained from the component supplier for procurement planning.

Q: Are there any operating temperature limitations for substitute parts?

A: The original 1-104351-3 specifies operating temperature of -65°C to 105°C. The TE Connectivity 6-146256-3 maintains this specification. Molex C-Grid parts do not specify operating temperature in the provided data. Confirmation of operating temperature specifications for Molex parts is required for applications with temperature extremes.

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