TE Connectivity AMP Connectors 1-644040-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1-644040-2 is a 12 Position Rectangular Receptacle Connector with IDC termination and gold plating, designed for discrete or ribbon cable applications at 26 AWG wire gauge. This connector operates within the MTA-100 series and features a 0.100" (2.54mm) pitch with a single-row configuration and locking ramp fastening mechanism.

The 1-644040-2 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	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	12
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 rectangular connectors within the MTA-100 series is determined by strict equivalence across the following critical parameters:

Connector Type and Contact Configuration: Receptacle with female socket contacts
Position Count and Pitch: 12 positions at 0.100" (2.54mm) spacing
Termination Method: IDC (Insulation Displacement Contact) for ribbon or discrete cable
Wire Gauge Compatibility: 26 AWG
Contact Material and Finish: Gold plating at 15.0µin (0.38µm) thickness
Mechanical Features: Closed end design with locking ramp fastening
Mounting Configuration: Free hanging (in-line) and right angle orientation support

Substitute parts must maintain identical electrical and mechanical specifications across all listed parameters to ensure direct interchangeability without design modification or re-qualification.

Parameter Comparison

Parameter	1-644040-2 (Main Part)	4-644040-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Category	Rectangular Connectors	Rectangular Connectors
Series	MTA-100	MTA-100
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	12	12
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
Base Product Number	644040	644040
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.8000	8536.69.8000
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant

Engineering Selection Recommendations

The 4-644040-2 is a direct functional equivalent to the 1-644040-2 across all electrical and mechanical parameters. Both connectors share identical specifications for position count, pitch, termination method, wire gauge, contact finish, and mounting configuration.

The primary distinction between these parts is product lifecycle status and regulatory compliance:

1-644040-2: Obsolete product status with RoHS non-compliant certification
4-644040-2: Active product status with RoHS Compliant certification

For new designs and ongoing applications, the 4-644040-2 is the appropriate selection due to its active product status and RoHS compliance. The 4-644040-2 maintains full electrical and mechanical interchangeability with the 1-644040-2, enabling direct substitution in existing assemblies and designs without modification to connector interfaces, cable termination procedures, or mounting configurations.

Frequently Asked Questions (FAQ)

Q: Can the 4-644040-2 be used as a direct replacement for the 1-644040-2 in existing assemblies?

A: Yes. The 4-644040-2 is electrically and mechanically identical to the 1-644040-2 across all critical parameters including position count, pitch, IDC termination, wire gauge, contact finish, and mounting type. Direct substitution is possible without design modification.

Q: What is the significance of the product status difference between these parts?

A: The 1-644040-2 is classified as Obsolete, indicating it is no longer in active production. The 4-644040-2 is classified as Active, meaning it is currently manufactured and available for procurement. For new designs and long-term supply assurance, the active part number is the appropriate selection.

Q: How does RoHS compliance affect the selection between these two parts?

A: The 1-644040-2 is RoHS non-compliant, while the 4-644040-2 is RoHS Compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must use the 4-644040-2. Both parts are otherwise functionally equivalent.

Q: Are there any differences in the IDC termination process between these connectors?

A: No. Both the 1-644040-2 and 4-644040-2 utilize identical IDC termination methods for 26 AWG discrete or ribbon cable. Termination procedures, tooling, and cable preparation requirements are identical.

Q: What wire gauges are compatible with these connectors?

A: Both connectors are specified for 26 AWG wire gauge. This specification applies to discrete wire or ribbon cable termination via the IDC contact system.

Q: Is the contact finish thickness identical between these parts?

A: Yes. Both the 1-644040-2 and 4-644040-2 feature gold contact finish at 15.0µin (0.38µm) thickness, ensuring equivalent electrical performance and contact reliability.

Q: Can these connectors accommodate both in-line and right angle mounting?

A: Yes. Both connectors support free hanging mounting in both in-line and right angle orientations, providing flexibility in circuit board layout and cable routing configurations.

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