TE Connectivity 640440-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640440-2 is a 2-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and right-angle mounting configuration with locking ramp fastening.

The 640440-2 is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector type.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	2
Pitch	0.100" (2.54mm)
Number of Rows	1
Contact Type	Female Socket
Cable Termination Method	IDC
Wire Gauge	22 AWG
Wire Type	Discrete or Ribbon Cable
Mounting Type	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp
Features	Closed End
Contact Finish Thickness	80.0µin (2.03µm)
Color	Red
Series	MTA-100
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 640440-2 is determined by strict equivalence across the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count & Pitch: 2 positions at 0.100" (2.54mm) spacing
Termination Method: IDC cable termination
Wire Gauge Compatibility: 22 AWG
Mounting & Fastening: Free hanging in-line and right-angle mounting with locking ramp fastening
Mechanical Features: Closed-end design
Contact Finish Thickness: 80.0µin (2.03µm)
Series Designation: MTA-100

The substitute part 3-640440-2 maintains identical electrical and mechanical specifications across all these parameters, with the primary distinction being contact finish composition (tin versus tin-lead) and product status (active versus obsolete).

Parameter Comparison

Parameter	640440-2 (Main Part)	3-640440-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	2	2
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp	Locking Ramp
Cable Termination	IDC	IDC
Wire Type	Discrete or Ribbon Cable	Discrete or Ribbon Cable
Wire Gauge	22 AWG	22 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Red	Red
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant

Engineering Selection Recommendations

The 3-640440-2 serves as the direct active-production substitute for the obsolete 640440-2. Both connectors are manufactured by TE Connectivity within the MTA-100 series and share identical mechanical and electrical specifications.

Product Status Consideration: The 640440-2 is obsolete, while the 3-640440-2 is active. For new designs, repair operations, or ongoing production support, the 3-640440-2 is the appropriate selection.

Compliance Differentiation: The 3-640440-2 is RoHS compliant, whereas the 640440-2 is RoHS non-compliant. Applications subject to RoHS regulations or environmental compliance requirements must utilize the 3-640440-2.

Contact Finish Distinction: The 640440-2 features tin-lead contact finish, while the 3-640440-2 features tin contact finish. Both maintain identical contact finish thickness of 80.0µin (2.03µm). The tin finish in the 3-640440-2 aligns with modern manufacturing standards and RoHS compliance.

Availability: The 3-640440-2 is currently in active production with higher inventory availability (2300 pieces) compared to the obsolete 640440-2 (746 pieces).

Frequently Asked Questions (FAQ)

Q: Can the 3-640440-2 be used as a direct replacement for the 640440-2?

A: Yes. The 3-640440-2 is electrically and mechanically equivalent to the 640440-2. Both connectors share identical position count, pitch, termination method, wire gauge, mounting configuration, and fastening mechanism. The primary differences are product status (active versus obsolete) and RoHS compliance.

Q: What is the difference between tin-lead and tin contact finishes in these connectors?

A: The 640440-2 uses tin-lead contact finish, while the 3-640440-2 uses tin contact finish. Both finishes maintain the same thickness of 80.0µin (2.03µm). The tin finish in the 3-640440-2 reflects current manufacturing standards and RoHS compliance requirements.

Q: Are these connectors compatible with both discrete and ribbon cable?

A: Yes. Both the 640440-2 and 3-640440-2 support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method at 22 AWG wire gauge.

Q: What does the closed-end feature mean?

A: The closed-end design indicates that the connector housing is fully enclosed, providing protection for the internal contacts and termination points.

Q: Is there a difference in packaging between these two parts?

A: The 640440-2 packaging is not specified in the available data. The 3-640440-2 is supplied in bulk packaging. Packaging differences do not affect electrical or mechanical compatibility.

Q: Why should I select the 3-640440-2 over the 640440-2?

A: The 3-640440-2 is the active production part with RoHS compliance, higher inventory availability, and modern manufacturing standards. The 640440-2 is obsolete and should be replaced with the 3-640440-2 for all new applications and ongoing support.

Q: Are both connectors rated for the same moisture sensitivity level?

A: Yes. Both the 640440-2 and 3-640440-2 are rated at Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions.

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