TE Connectivity 641243-4 MTA-100 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 641243-4 is a 4-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG discrete or ribbon cable. This connector features gold-plated contacts, a locking ramp fastening mechanism, and feed-through capability in a blue housing.

The 641243-4 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to ensure continued availability for maintenance, repair, and new design implementations where this connector type is specified.

Key Parameters

Parameter	Specification
Connector Type	Rectangular Receptacle
Number of Positions	4
Pitch	0.100" (2.54mm)
Contact Type	Female Socket
Cable Termination Method	IDC (Insulation Displacement Contact)
Wire Gauge	26 AWG
Contact Finish	Gold, 30.0µin (0.76µm)
Mounting Type	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp
Series	MTA-100
Color	Blue
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 641243-4 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Mandatory Matching Parameters:

Connector type: Rectangular receptacle
Number of positions: 4
Pitch: 0.100" (2.54mm)
Contact type: Female socket
Cable termination: IDC
Wire gauge: 26 AWG
Contact finish: Gold with 30.0µin thickness
Mounting type: Free Hanging (In-Line), Right Angle
Fastening type: Locking ramp
Series: MTA-100
Housing color: Blue

The substitute part 3-641243-4 meets all mandatory parameters and is therefore classified as a direct equivalent. The primary distinction between the main part and its substitute is product status and packaging configuration.

Parameter Comparison

Parameter	641243-4 (Main Part)	3-641243-4 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Rectangular Receptacle	Rectangular Receptacle
Number of Positions	4	4
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Female Socket	Female Socket
Cable Termination	IDC	IDC
Wire Gauge	26 AWG	26 AWG
Contact Finish	Gold, 30.0µin	Gold, 30.0µin
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp	Locking Ramp
Color	Blue	Blue
Product Status	Obsolete	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
REACH Status	Vendor Undefined	REACH Unaffected
Packaging	Not specified	Bulk
Inventory Status	982 Pcs New Original In Stock	709 Pcs New Original In Stock

Engineering Selection Recommendations

For Obsolete Part Replacement:

The 3-641243-4 is the direct substitute for the obsolete 641243-4. Both parts are manufactured by TE Connectivity and share identical electrical and mechanical specifications. The substitute part carries an active product status, ensuring long-term availability and continued manufacturing support.

Compliance Considerations:

The substitute part 3-641243-4 provides enhanced regulatory compliance through ROHS3 certification and defined REACH status (REACH Unaffected), compared to the main part's vendor-undefined REACH status. Both parts maintain MSL 1 rating and are suitable for unlimited moisture exposure conditions.

Inventory and Procurement:

Both parts are available in new original condition. The main part 641243-4 maintains higher current inventory (982 units), while the substitute 3-641243-4 is available in bulk packaging (709 units). For new designs and long-term applications, the active-status substitute part is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the 3-641243-4 be used as a direct replacement for the 641243-4?

A: Yes. The 3-641243-4 is a direct equivalent. All electrical and mechanical parameters are identical, including connector type, position count, pitch, contact configuration, termination method, wire gauge, contact finish, mounting type, and fastening mechanism.

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

A: The main difference is product status. The 641243-4 is obsolete, while the 3-641243-4 is active. The substitute also offers improved regulatory documentation with ROHS3 certification and defined REACH status.

Q: Are there packaging differences between the two parts?

A: Yes. The 641243-4 packaging is not specified in available documentation. The 3-641243-4 is supplied in bulk packaging. This distinction does not affect electrical or mechanical compatibility.

Q: Will the 3-641243-4 work with existing cable assemblies designed for the 641243-4?

A: Yes. Both parts are 4-position MTA-100 receptacles with identical pitch (0.100"), IDC termination for 26 AWG cable, and matching contact geometry. Existing cable assemblies are fully compatible.

Q: Are there any compliance or certification differences?

A: Both parts are RoHS compliant and carry MSL 1 rating. The substitute part provides ROHS3 certification and defined REACH status (REACH Unaffected), whereas the main part has vendor-undefined REACH status. Both are suitable for the same environmental and regulatory applications.

Q: What is the contact finish specification for both parts?

A: Both parts feature gold-plated contacts with a thickness of 30.0µin (0.76µm), ensuring equivalent electrical performance and corrosion resistance.

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