TE Connectivity 641439-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 641439-2 is a 2-position rectangular plug connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG wire. This connector features tin-lead contact finish and is classified as obsolete. Due to its obsolete product status, identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production and field service applications.

Key Parameters

Parameter	Value
Connector Type	Plug
Number of Positions	2
Pitch	0.156" (3.96mm)
Number of Rows	1
Cable Termination Method	IDC
Wire Gauge	26 AWG
Contact Type	Male Pin
Mounting Type	Free Hanging (In-Line), Right Angle
Features	Closed End
Contact Finish Thickness	80.0µin (2.03µm)
Color	Blue
Series	MTA-156

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 641439-2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Connector type (Plug)
Number of positions (2)
Pitch specification (0.156" / 3.96mm)
Number of rows (1)
Cable termination method (IDC)
Wire gauge compatibility (26 AWG)
Contact type (Male Pin)
Mounting configuration (Free Hanging, In-Line, Right Angle)
Closed end feature
Contact finish thickness (80.0µin / 2.03µm)

The substitute part 3-641439-2 maintains full equivalence across all mandatory parameters. The primary distinction between the main part and its substitute is the contact finish specification (tin-lead versus tin) and corresponding compliance certifications, which do not affect mechanical or electrical interchangeability within the MTA-156 series framework.

Parameter Comparison

Parameter	641439-2 (Main Part)	3-641439-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-156	MTA-156
Connector Type	Plug	Plug
Number of Positions	2	2
Pitch	0.156" (3.96mm)	0.156" (3.96mm)
Number of Rows	1	1
Contact Type	Male Pin	Male Pin
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Cable Termination	IDC	IDC
Wire Gauge	26 AWG	26 AWG
Features	Closed End	Closed End
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Blue	Blue
Contact Finish	Tin-Lead	Tin
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant
REACH Status	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

The substitute part 3-641439-2 is the direct equivalent for the obsolete 641439-2 connector. Selection of the substitute part is based on the following engineering considerations:

Product Status: The main part 641439-2 carries obsolete status, whereas the substitute 3-641439-2 maintains active product status. This distinction ensures continued availability and manufacturing support for new designs and field replacements.

Compliance Certifications: The substitute part 3-641439-2 is RoHS compliant and REACH unaffected, compared to the non-compliant and REACH-affected status of the main part. For applications subject to regulatory requirements or environmental compliance mandates, the substitute part satisfies these obligations.

Mechanical and Electrical Equivalence: Both parts maintain identical specifications across all connector geometry, termination method, wire gauge, and contact configuration parameters. The parts are mechanically and electrically interchangeable within the MTA-156 series.

Contact Finish Consideration: The substitute part utilizes tin contact finish in place of tin-lead. The contact finish thickness remains constant at 80.0µin (2.03µm), preserving electrical performance and contact reliability characteristics.

Frequently Asked Questions (FAQ)

Q: Are the 641439-2 and 3-641439-2 connectors mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including pitch (0.156"), number of positions (2), mounting configuration (Free Hanging, In-Line, Right Angle), and closed-end feature. They are fully interchangeable in applications where the MTA-156 series connector footprint is specified.

Q: What is the primary difference between these two parts?

A: The primary difference is the contact finish specification. The 641439-2 uses tin-lead contact finish, while the 3-641439-2 uses tin contact finish. Both maintain the same contact finish thickness of 80.0µin (2.03µm). Additionally, the substitute part carries active product status and meets RoHS and REACH compliance requirements.

Q: Can the 3-641439-2 be used as a direct replacement for the 641439-2 in existing designs?

A: Yes. The 3-641439-2 is a direct substitute with identical electrical and mechanical specifications. The change in contact finish from tin-lead to tin does not affect connector performance or compatibility within the MTA-156 series framework.

Q: Why is the 641439-2 listed as obsolete?

A: The 641439-2 is classified as obsolete by TE Connectivity. The active substitute 3-641439-2 is the recommended part for new designs and ongoing production requirements.

Q: Are there packaging differences between these parts?

A: The main part 641439-2 does not specify packaging information in the available data. The substitute part 3-641439-2 is supplied in bulk packaging.

Q: Do both parts support the same wire gauge and termination method?

A: Yes. Both connectors support 26 AWG wire and IDC (Insulation Displacement Contact) termination. They are compatible with discrete or ribbon cable applications.

Q: What is the moisture sensitivity level for these connectors?

A: Both the 641439-2 and 3-641439-2 carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.

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