TE Connectivity 643813-4 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643813-4 is a 4-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, closed-end design, and locking ramp fastening for secure in-line or right-angle mounting applications.

The 643813-4 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector configuration.

Substiute Parts

643813-4

TE Connectivity AMP ConnectorsIn Stock: 738643813-4 Datasheet

Current PartRFQ

3-643813-4

TE Connectivity AMP ConnectorsIn Stock: 15823-643813-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 643813-4 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle)
• Number of positions (4)
• Pitch (0.100" / 2.54mm)
• Number of rows (1)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge (22 AWG)
• Wire type compatibility (Discrete or Ribbon Cable)
• Mounting type (Free Hanging, In-Line, Right Angle)
• Fastening type (Locking Ramp)
• Features (Closed End)
• Series designation (MTA-100)
• Contact finish thickness (80.0µin / 2.03µm)

The substitute part 3-643813-4 meets all mandatory matching parameters and is therefore a direct functional equivalent for the obsolete 643813-4.

Parameter Comparison

Engineering Selection Recommendations

The 3-643813-4 is the direct substitute for the obsolete 643813-4. Both connectors are manufactured by TE Connectivity and belong to the MTA-100 series with identical mechanical and electrical specifications.

Product Status Consideration: The 643813-4 is obsolete, while the 3-643813-4 maintains active product status with higher inventory availability (1478 units versus 720 units). Active status ensures continued manufacturing support and supply chain reliability.

Compliance Consideration: The 3-643813-4 is RoHS Compliant, whereas the 643813-4 is RoHS non-compliant. For applications subject to RoHS regulations or requiring compliance with modern environmental standards, the 3-643813-4 is the appropriate selection.

Contact Finish Difference: The 643813-4 features tin-lead contact finish, while the 3-643813-4 uses tin finish. Both maintain identical contact finish thickness (80.0µin / 2.03µm) and are functionally equivalent for IDC termination applications.

REACH Status: The 643813-4 is REACH Affected; the 3-643813-4 shows Vendor Undefined REACH status. Clarification with the vendor is necessary for applications requiring explicit REACH compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the 3-643813-4 directly replace the 643813-4 in existing assemblies?

A: Yes. The 3-643813-4 is a direct functional equivalent. Both connectors share identical mechanical dimensions, pitch, contact configuration, IDC termination method, and wire gauge specifications. No design modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The main differences are product status and compliance certifications. The 643813-4 is obsolete and RoHS non-compliant with tin-lead contacts. The 3-643813-4 is an active product with RoHS compliance and tin contacts. All electrical and mechanical parameters are identical.

Q: Are there any compatibility concerns with ribbon cable or discrete wire?

A: No. Both connectors support IDC termination for discrete or ribbon cable at 22 AWG. The identical contact finish thickness and IDC design ensure equivalent performance with both cable types.

Q: Does the contact finish change (tin-lead to tin) affect electrical performance?

A: No. Both contact finishes maintain the same thickness specification (80.0µin / 2.03µm) and are suitable for IDC applications. The change represents a compliance update rather than a functional modification.

Q: Which part should be selected for new designs?

A: The 3-643813-4 should be selected for new designs. It is an active product with RoHS compliance, ensuring long-term availability and regulatory alignment.

Q: Is the 3-643813-4 available in the same packaging as the 643813-4?

A: The 3-643813-4 is supplied in bulk packaging. The original 643813-4 packaging specification was not provided in the available data. Contact the supplier for specific packaging requirements.