TE Connectivity 644463-7 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644463-7 is a 7-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design with polarizing key, and free-hanging in-line mounting configuration.

The 644463-7 is classified as obsolete. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this connector type is specified or functionally required.

Substiute Parts

644463-7

TE Connectivity AMP ConnectorsIn Stock: 1159644463-7 Datasheet

Current PartRFQ

3-644463-7

TE Connectivity AMP ConnectorsIn Stock: 17033-644463-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644463-7 is based on electrical and mechanical compatibility within the MTA-156 series. The substitute part must satisfy the following criteria:

Critical Substitution Parameters:

• Connector type: Rectangular receptacle
• Number of positions: 7
• Pitch: 0.156" (3.96mm)
• Number of rows: 1
• Contact type: Female socket
• Cable termination: IDC
• Wire gauge: 22 AWG
• Wire type: Discrete or ribbon cable
• Mounting type: Free hanging (in-line)
• Features: Closed end with polarizing key
• Series: MTA-156

The substitute part 3-644463-7 meets all critical substitution parameters. The primary difference is the contact finish specification: the substitute uses tin finish instead of tin-lead finish, and carries active product status with RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

The 3-644463-7 is the direct substitute for the obsolete 644463-7. Both connectors are manufactured by TE Connectivity within the MTA-156 series and share identical mechanical and electrical specifications for all critical parameters including pitch, position count, contact type, termination method, and wire gauge.

Product Status Consideration: The 644463-7 is obsolete, while the 3-644463-7 carries active product status. For new designs, repair operations, and long-term supply chain planning, the 3-644463-7 is the appropriate selection.

Compliance Consideration: The 3-644463-7 is RoHS compliant, whereas the 644463-7 is RoHS non-compliant. Applications subject to RoHS requirements must use the 3-644463-7. The contact finish difference (tin versus tin-lead) reflects this compliance transition.

Contact Finish: The substitute part uses tin finish at the same thickness specification (80.0µin / 2.03µm) as the original tin-lead finish. Both finishes provide equivalent electrical performance and contact reliability for IDC termination applications.

Moisture Sensitivity: Both parts carry MSL rating 1 (unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Frequently Asked Questions (FAQ)

Q: Can the 3-644463-7 be used as a direct replacement for the 644463-7 in existing applications?

A: Yes. The 3-644463-7 is mechanically and electrically compatible with the 644463-7. Both connectors share identical pitch (0.156"), position count (7), contact type (female socket), termination method (IDC), and wire gauge (22 AWG) specifications. The connector will mate with the same mating plugs and accept the same cable configurations.

Q: What is the difference between the tin-lead finish on the 644463-7 and the tin finish on the 3-644463-7?

A: The 644463-7 uses a tin-lead contact finish, while the 3-644463-7 uses a tin finish. Both finishes are applied at the same thickness (80.0µin / 2.03µm). The tin finish on the 3-644463-7 reflects RoHS compliance requirements that restrict lead content in electronic components. Both finishes provide equivalent electrical conductivity and contact reliability for IDC applications.

Q: Why is the 644463-7 listed as obsolete?

A: The 644463-7 has been superseded by the 3-644463-7 within the TE Connectivity product line. The transition reflects industry-wide compliance with RoHS regulations and the shift from tin-lead to tin contact finishes. The 3-644463-7 maintains full functional equivalence while meeting current regulatory requirements.

Q: Are there any packaging differences between these parts?

A: The 644463-7 packaging specification is not provided in the available data. The 3-644463-7 is supplied in bulk packaging. Confirm packaging requirements with your procurement or supply chain department for specific application needs.

Q: Can these connectors be used with both discrete and ribbon cable?

A: Yes. Both the 644463-7 and 3-644463-7 are specified for use with discrete or ribbon cable at 22 AWG wire gauge. The IDC termination method accommodates both cable types without modification.

Q: What is the MSL rating for these connectors?

A: Both connectors carry MSL rating 1 (unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.

Q: Are these connectors suitable for new product designs?

A: The 3-644463-7 is the appropriate choice for new designs. It carries active product status and RoHS compliance certification. The 644463-7 is obsolete and should not be specified for new applications.