TE Connectivity 643814-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643814-2 is a 2-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 24 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as obsolete product status.

Due to its obsolete classification, locating original inventory of the 643814-2 becomes increasingly difficult. Identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary to maintain design compatibility and ensure continued availability for repair, maintenance, and production applications.

Substiute Parts

643814-2

TE Connectivity AMP ConnectorsIn Stock: 1169643814-2 Datasheet

Current PartRFQ

3-643814-2

TE Connectivity AMP ConnectorsIn Stock: 293293-643814-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 643814-2 are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic requires matching the following parameters:

• Connector type (Receptacle)
• Number of positions (2)
• Pitch specification (0.100" / 2.54mm)
• Number of rows (1)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge compatibility (24 AWG)
• Wire type support (Discrete or Ribbon Cable)
• Mounting configuration (Free Hanging, In-Line, Right Angle)
• Fastening mechanism (Locking Ramp)
• Closed end feature
• Contact finish thickness (80.0µin / 2.03µm)
• Color (White)
• Series designation (MTA-100)
• Moisture sensitivity level (1)

Parts meeting all these criteria are classified as direct substitutes. Variations in contact finish material (tin-lead versus tin) do not affect mechanical or electrical compatibility when finish thickness remains constant.

Parameter Comparison

Engineering Selection Recommendations

The 3-643814-2 serves as the direct substitute for the obsolete 643814-2 connector. Both parts share identical mechanical and electrical specifications across all critical parameters, including pitch, position count, contact configuration, termination method, and wire gauge compatibility.

The primary distinction between these parts is product status and regulatory compliance. The 643814-2 is classified as obsolete and RoHS non-compliant, whereas the 3-643814-2 maintains active product status and achieves RoHS compliance. The contact finish differs (tin-lead versus tin), but both maintain the same finish thickness of 80.0µin (2.03µm), ensuring equivalent electrical performance and mechanical interface compatibility.

For new designs and ongoing production applications, the 3-643814-2 is the appropriate selection due to its active availability and regulatory compliance status. For legacy system maintenance where original tin-lead finish is specifically required, the 643814-2 remains functionally equivalent, though sourcing may present challenges given its obsolete classification.

Frequently Asked Questions (FAQ)

Q: Can the 3-643814-2 directly replace the 643814-2 in existing assemblies?

A: Yes. The 3-643814-2 is mechanically and electrically equivalent to the 643814-2. All critical parameters including connector type, position count, pitch, contact configuration, termination method, and wire gauge are identical. The parts are interchangeable in applications where the original 643814-2 was specified.

Q: What is the difference between the tin-lead finish on the 643814-2 and the tin finish on the 3-643814-2?

A: Both finishes maintain the same thickness of 80.0µin (2.03µm). The contact finish material does not affect mechanical fit or electrical performance in IDC termination applications. The tin finish on the 3-643814-2 reflects its RoHS compliance status.

Q: Why is the 643814-2 classified as obsolete?

A: The 643814-2 is no longer in active production. The 3-643814-2 has superseded it as the current production equivalent, offering the same functionality with improved regulatory compliance and continued availability.

Q: Are there packaging differences between the 643814-2 and 3-643814-2?

A: The 643814-2 is supplied in unspecified packaging, while the 3-643814-2 is supplied in bulk packaging. Both formats contain the same connector component with identical specifications.

Q: Does the RoHS compliance status of the 3-643814-2 affect its compatibility with the 643814-2?

A: No. RoHS compliance is a regulatory classification that does not alter the electrical or mechanical properties of the connector. The 3-643814-2 is fully compatible with applications originally designed for the 643814-2.

Q: Can both the 643814-2 and 3-643814-2 terminate 24 AWG discrete and ribbon cable?

A: Yes. Both connectors support IDC termination of 24 AWG discrete or ribbon cable. The termination method and wire gauge compatibility are identical between the two parts.

Q: What is the pitch specification for these connectors?

A: Both the 643814-2 and 3-643814-2 feature a 0.100" (2.54mm) pitch, which is the standard spacing between contact positions in the MTA-100 series.