TE Connectivity 644040-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644040-3 is a 3-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG wire. This connector features gold-plated female socket contacts, a closed-end design, and supports both discrete and ribbon cable configurations.

The 644040-3 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this connector type.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line), Right Angle
Cable Termination	IDC
Wire Gauge	26 AWG
Contact Finish	Gold
Contact Finish Thickness	15.0µin (0.38µm)
Features	Closed End
Series	MTA-100

Substitute Part Grouping Explanation

Substitution of the 644040-3 is determined by strict equivalence across the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count & Pitch: 3 positions at 0.100" (2.54mm) spacing
Termination Method: IDC technology for 26 AWG wire
Contact Material & Finish: Gold plating at 15.0µin thickness
Mechanical Design: Closed-end housing with free-hanging, right-angle mounting and locking ramp fastening
Series Designation: MTA-100 family

The substitute part 3-644040-3 maintains identical electrical and mechanical specifications across all these parameters, ensuring direct functional equivalence.

Parameter Comparison

Parameter	644040-3 (Main Part)	3-644040-3 (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	3	3
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	26 AWG	26 AWG
Features	Closed End	Closed End
Contact Finish	Gold	Gold
Contact Finish Thickness	15.0µin (0.38µm)	15.0µin (0.38µm)
Color	Blue	Blue
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.8000	8536.69.8000

Engineering Selection Recommendations

The 3-644040-3 is the direct substitute for the obsolete 644040-3. Both parts are manufactured by TE Connectivity and belong to the MTA-100 series with identical electrical and mechanical specifications.

Key Differentiators:

Product Status: The 3-644040-3 is classified as Active, ensuring ongoing availability and supply chain support, whereas the 644040-3 is Obsolete.
RoHS Compliance: The 3-644040-3 is RoHS Compliant, meeting current environmental and regulatory requirements. The 644040-3 is RoHS non-compliant.
Packaging: The 3-644040-3 is supplied in Bulk packaging, compared to the main part's unspecified packaging.
Inventory: The 3-644040-3 has higher current stock availability (991 pcs) versus the main part (637 pcs).

For new designs, production continuity, or system upgrades, the 3-644040-3 is the appropriate selection. The substitute part maintains full functional and mechanical compatibility while providing improved regulatory compliance and supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the 3-644040-3 be used as a direct replacement for the 644040-3?

A: Yes. The 3-644040-3 is a direct substitute with identical electrical and mechanical specifications. Both are 3-position MTA-100 series receptacles with IDC termination for 26 AWG wire, gold-plated contacts, and closed-end design.

Q: What is the difference between these two part numbers?

A: The primary differences are product status, regulatory compliance, and packaging. The 3-644040-3 is an active product with RoHS compliance and bulk packaging, while the 644040-3 is obsolete and RoHS non-compliant. Functionally and mechanically, they are equivalent.

Q: Are there any compatibility concerns when substituting the 3-644040-3 for the 644040-3?

A: No compatibility concerns exist. Both connectors share identical pitch (0.100"), position count (3), contact type (female socket), termination method (IDC), wire gauge (26 AWG), and mounting configuration (free-hanging, right-angle with locking ramp).

Q: Does the RoHS compliance difference affect performance?

A: RoHS compliance reflects manufacturing process and material standards rather than electrical performance. Both parts deliver equivalent electrical and mechanical performance. The 3-644040-3's RoHS compliance ensures alignment with current environmental regulations and procurement standards.

Q: What packaging options are available?

A: The 644040-3 packaging is unspecified in available documentation. The 3-644040-3 is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are both parts suitable for ribbon cable and discrete wire applications?

A: Yes. Both the 644040-3 and 3-644040-3 support discrete or ribbon cable configurations with IDC termination at 26 AWG.

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