TE Connectivity 4-644381-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-644381-2 is a 12-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 18 AWG discrete or ribbon cable. This connector features a tin contact finish, closed-end design, and polarizing key for secure mating. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and field replacements.

Substiute Parts

4-644381-2

TE Connectivity AMP ConnectorsIn Stock: 7094-644381-2 Datasheet

Current PartRFQ

4-643817-2

TE Connectivity AMP ConnectorsIn Stock: 9074-643817-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-644381-2 is based on electrical and mechanical compatibility within the MTA-156 connector series. The substitute part 4-643817-2 maintains identical specifications across all critical parameters: 12-position receptacle configuration, 0.156" pitch, IDC termination method, 18 AWG wire gauge compatibility, tin contact finish, and free-hanging in-line mounting. Both connectors feature closed-end design with polarizing keys, ensuring mechanical and electrical interchangeability.

The primary distinction between these parts is product status: the original part is obsolete, while the substitute is active. The substitute part is therefore suitable for new designs and ongoing production requirements. Both parts comply with RoHS regulations and carry MSL-1 moisture sensitivity classification, indicating unlimited shelf life under standard storage conditions.

Parameter Comparison

Engineering Selection Recommendations

The 4-643817-2 is the direct functional equivalent of the 4-644381-2 and is suitable for all applications requiring a 12-position MTA-156 rectangular receptacle connector with IDC termination and 18 AWG wire compatibility. Selection of the substitute part is recommended for new designs and production applications due to its active product status and assured long-term availability.

Both parts maintain identical electrical and mechanical specifications, including contact finish, pitch, mounting configuration, and termination method. The substitute part carries current RoHS compliance certification, meeting modern regulatory requirements. MSL-1 classification for both parts ensures compatibility with standard storage and handling procedures without special environmental controls.

The substitute part is available in bulk packaging, supporting production requirements at scale. The original part, while currently in stock inventory, carries obsolete status and should not be selected for new designs or long-term production commitments.

Frequently Asked Questions (FAQ)

Q: Can the 4-643817-2 be used as a direct replacement for the 4-644381-2 in existing assemblies?

A: Yes. Both connectors are electrically and mechanically identical across all critical parameters: 12-position configuration, 0.156" pitch, IDC termination, 18 AWG wire gauge, tin contact finish, and free-hanging in-line mounting. The connectors are fully interchangeable in applications designed for the MTA-156 series.

Q: What is the primary reason for substitution?

A: The 4-644381-2 is classified as obsolete, while the 4-643817-2 is active. Substitution ensures continued component availability and compliance with modern supply chain practices for new designs and ongoing production.

Q: Are there differences in packaging between these parts?

A: The main part 4-644381-2 is supplied in standard packaging, while the substitute 4-643817-2 is supplied in bulk packaging. Both packaging formats are suitable for production environments; bulk packaging supports higher-volume manufacturing requirements.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both parts are RoHS compliant. The main part carries ROHS3 certification, while the substitute carries current RoHS certification. Both meet regulatory requirements for electronic component manufacturing and distribution.

Q: What is the MSL rating for these connectors?

A: Both connectors carry MSL-1 (Unlimited) moisture sensitivity classification. This rating indicates no special storage or handling requirements and unlimited shelf life under standard environmental conditions.

Q: Are the contact finishes identical?

A: Yes. Both connectors feature tin contact finish with 80.0µin (2.03µm) thickness, ensuring identical electrical performance and corrosion resistance characteristics.

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

A: Yes. Both connectors support IDC termination with discrete or ribbon cable at 18 AWG wire gauge, providing flexibility in cable assembly configurations.