TE Connectivity 643814-7 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643814-7 is a 7-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 designation, identification of equivalent substitute parts is necessary to support ongoing maintenance, repair, and legacy system requirements. The substitute part maintains functional compatibility while offering improved compliance status and active product availability.

Substiute Parts

643814-7

TE Connectivity AMP ConnectorsIn Stock: 764643814-7 Datasheet

Current PartRFQ

3-643814-7

TE Connectivity AMP ConnectorsIn Stock: 8093-643814-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 643814-7 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part 3-643814-7 qualifies as a direct equivalent based on the following matching criteria:

Matching Parameters:

• Connector type: Receptacle
• Number of positions: 7
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Contact type: Female Socket
• Cable termination method: IDC
• Wire gauge: 24 AWG
• Wire type: Discrete or Ribbon Cable
• Mounting type: Free Hanging (In-Line), Right Angle
• Fastening type: Locking Ramp
• Features: Closed End
• Contact finish thickness: 80.0µin (2.03µm)
• Color: White
• Series: MTA-100
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part differs only in contact finish material (tin versus tin-lead) and product status (active versus obsolete), with no impact on mechanical or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 3-643814-7

The substitute part 3-643814-7 is the appropriate selection for new designs, procurement, and system replacements. This part maintains complete mechanical and electrical compatibility with the original 643814-7 while offering the following advantages:

• Active Product Status: Available through standard distribution channels with current inventory support
• RoHS3 Compliance: Meets current regulatory requirements for lead-free manufacturing and environmental standards
• Contact Finish: Tin finish eliminates lead content while maintaining equivalent contact resistance and durability specifications at the specified 80.0µin (2.03µm) thickness

Legacy System Considerations:

The original 643814-7 remains functionally equivalent for existing installations where RoHS compliance is not a regulatory requirement. Both parts share identical mechanical dimensions, pitch, mounting configuration, and IDC termination characteristics. The contact finish difference (tin-lead versus tin) does not affect electrical performance or mechanical interchangeability within the MTA-100 series connector family.

Frequently Asked Questions (FAQ)

Q: Can 3-643814-7 be used as a direct replacement for 643814-7 in existing assemblies?

A: Yes. The substitute part 3-643814-7 is mechanically and electrically equivalent to 643814-7. Both connectors share identical pitch (0.100"), position count (7), contact type (female socket), mounting configuration (free hanging/right angle), and IDC termination method for 24 AWG cable. The connector will mate with existing mating plugs and accept the same cable termination without modification.

Q: What is the difference between the tin-lead finish on 643814-7 and the tin finish on 3-643814-7?

A: The contact finish material differs between the two parts. The 643814-7 uses tin-lead plating, while 3-643814-7 uses tin plating. Both finishes maintain the same thickness specification of 80.0µin (2.03µm). The tin finish on 3-643814-7 eliminates lead content to comply with RoHS3 regulations. Electrical performance and contact resistance characteristics remain equivalent.

Q: Why is 643814-7 listed as obsolete?

A: The 643814-7 has been discontinued by TE Connectivity and is no longer in active production. The substitute part 3-643814-7 represents the current active equivalent in the MTA-100 series product line. For new designs and ongoing procurement, 3-643814-7 is the recommended selection.

Q: Are there any packaging differences between these parts?

A: The main part 643814-7 packaging information is not specified in the available data. The substitute part 3-643814-7 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Does the RoHS compliance difference affect compatibility?

A: No. RoHS compliance is a manufacturing and regulatory designation that does not affect the mechanical or electrical compatibility of the connector. The substitute part 3-643814-7 meets ROHS3 compliance standards, making it suitable for applications subject to environmental and lead-free requirements. Both parts are functionally interchangeable.

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

A: Yes. Both 643814-7 and 3-643814-7 support IDC termination for discrete or ribbon cable at 24 AWG wire gauge. The connector design accommodates both cable types without modification.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited moisture sensitivity. These connectors do not require special moisture control during storage or handling.