TE Connectivity 644044-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644044-2 is a 2-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 AWG wire. This connector features gold-plated female socket contacts, a closed-end design, and supports both discrete and ribbon cable configurations. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure design compatibility in new procurement activities.

Substiute Parts

644044-2

TE Connectivity AMP ConnectorsIn Stock: 1018644044-2 Datasheet

Current PartRFQ

3-644044-2

TE Connectivity AMP ConnectorsIn Stock: 71623-644044-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 644044-2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle)
• Contact type (Female Socket)
• Number of positions (2)
• Pitch specification (0.100" / 2.54mm)
• Number of rows (1)
• Mounting type (Free Hanging In-Line, Right Angle)
• Fastening type (Locking Ramp)
• Cable termination method (IDC)
• Wire gauge compatibility (28 AWG)
• Features (Closed End)
• Contact finish (Gold)
• Contact finish thickness (30.0µin / 0.76µm)
• Series designation (MTA-100)

The substitute part 3-644044-2 maintains complete electrical and mechanical equivalence across all specified parameters. The primary distinction is product status: the original 644044-2 is obsolete, while 3-644044-2 is active and available in production quantities. Both parts share identical base product number 644044, confirming functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 3-644044-2 is the direct equivalent for the obsolete 644044-2. Selection criteria are based on the following factors:

Product Status: The original 644044-2 is classified as obsolete, creating supply risk for ongoing production and future procurement. The 3-644044-2 maintains active status with significantly higher inventory availability (7125 units versus 989 units), ensuring supply chain reliability.

Regulatory Compliance: The substitute part 3-644044-2 is RoHS compliant, whereas the original 644044-2 is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the substitute part satisfies these regulatory obligations.

Electrical and Mechanical Equivalence: Both parts are identical across all functional parameters including connector type, contact configuration, pitch, termination method, wire gauge, contact finish, and series designation. No design modifications are required for direct substitution.

Packaging Consideration: The substitute part is supplied in bulk packaging, whereas original packaging information for 644044-2 is not specified. Bulk packaging does not affect connector functionality or performance.

For new designs, procurement activities, and replacement applications, 3-644044-2 is the appropriate selection. For legacy systems requiring the exact original part number, 644044-2 remains available in limited inventory.

Frequently Asked Questions (FAQ)

Q: Can 3-644044-2 be used as a direct replacement for 644044-2 in existing designs?

A: Yes. The 3-644044-2 is electrically and mechanically equivalent to 644044-2 across all specified parameters. Both connectors are 2-position receptacles from the MTA-100 series with identical pitch, contact configuration, termination method, and wire gauge specifications. No design modifications are required.

Q: What is the difference between 644044-2 and 3-644044-2?

A: The primary differences are product status and regulatory compliance. The 644044-2 is obsolete and RoHS non-compliant, while 3-644044-2 is active and RoHS compliant. Both share the same base product number (644044) and are functionally identical. The 3-644044-2 is supplied in bulk packaging with higher inventory availability.

Q: Are there any compatibility issues when substituting 3-644044-2 for 644044-2?

A: No compatibility issues exist. Both parts are MTA-100 series receptacles with identical mechanical dimensions, contact spacing, mounting configuration, and IDC termination specifications. They are fully interchangeable in applications designed for either part number.

Q: Does the RoHS compliance difference affect connector performance?

A: RoHS compliance relates to material composition and regulatory adherence, not connector performance. Both parts deliver equivalent electrical and mechanical performance. The RoHS compliance of 3-644044-2 is relevant only for applications subject to RoHS directives or customer specifications requiring RoHS-compliant components.

Q: What wire gauges are compatible with these connectors?

A: Both 644044-2 and 3-644044-2 are specified for 28 AWG wire. The IDC termination method accommodates both discrete and ribbon cable configurations at this wire gauge.

Q: Can these connectors be used with different wire gauges?

A: No. These connectors are specifically designed for 28 AWG wire. The IDC contact geometry and termination specifications are calibrated for this wire gauge only.

Q: What is the pitch specification for these connectors?

A: Both connectors feature a 0.100" (2.54mm) pitch, which is the center-to-center distance between adjacent contact positions in the 2-position configuration.

Q: Are these connectors suitable for ribbon cable applications?

A: Yes. Both 644044-2 and 3-644044-2 support ribbon cable termination via IDC (Insulation Displacement Contact) technology, in addition to discrete wire configurations.

Q: What does the closed-end feature mean?

A: The closed-end design indicates that the connector body has a sealed end, preventing accidental contact exposure and providing mechanical protection for the internal contact structure.

Q: What is the contact finish specification?

A: Both connectors feature gold-plated contacts with a finish thickness of 30.0µin (0.76µm), providing corrosion resistance and reliable electrical contact performance.