TE Connectivity 643815-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643815-3 is a 3-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 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 becomes increasingly difficult. Direct substitutes with active product status and improved compliance certifications are available to ensure continued design support and supply chain reliability.

Substiute Parts

643815-3

TE Connectivity AMP ConnectorsIn Stock: 764643815-3 Datasheet

Current PartRFQ

3-643815-3

TE Connectivity AMP ConnectorsIn Stock: 263073-643815-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 643815-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Series designation (MTA-100)
• Connector type (Receptacle)
• Number of positions (3)
• Pitch specification (0.100" / 2.54mm)
• Wire gauge (26 AWG)
• Cable termination method (IDC)
• Contact type (Female Socket)
• Mounting configuration (Free Hanging In-Line, Right Angle)
• Fastening type (Locking Ramp)
• Features (Closed End)

The substitute part 3-643815-3 maintains complete electrical and mechanical compatibility with the original 643815-3 across all specified parameters. The primary differences are product status (Active versus Obsolete) and contact finish composition (Tin versus Tin-Lead), with corresponding improvements in regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 3-643815-3

The part 3-643815-3 is the direct functional equivalent of 643815-3 and is the appropriate selection for new designs and component replacement applications.

Justification:

1. Product Status: The substitute carries Active product status, ensuring continued manufacturer support, availability, and design documentation. The original 643815-3 is classified as Obsolete, limiting future supply and technical resources.

2. Regulatory Compliance: The substitute achieves ROHS3 compliance, meeting current environmental and hazardous substance restrictions. The original part is RoHS non-compliant and does not satisfy modern procurement and regulatory requirements.

3. Electrical and Mechanical Compatibility: All functional parameters remain identical between the original and substitute, including connector type, position count, pitch, wire gauge, termination method, and mounting configuration.

4. Contact Finish Specification: The substitute uses pure tin contact finish instead of tin-lead. Both finishes maintain the specified 80.0µin (2.03µm) thickness and are functionally equivalent for IDC termination applications at 26 AWG.

5. Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can 3-643815-3 be used as a direct replacement for 643815-3 in existing assemblies?

A: Yes. The 3-643815-3 maintains complete electrical and mechanical compatibility with 643815-3 across all specified parameters. Connector type, position count, pitch, wire gauge, IDC termination method, and mounting configuration are identical.

Q: What is the difference between the tin-lead finish on 643815-3 and the tin finish on 3-643815-3?

A: Both finishes are applied at 80.0µin (2.03µm) thickness and are functionally equivalent for IDC termination with 26 AWG cable. The tin finish on the substitute eliminates lead content, enabling ROHS3 compliance.

Q: Why is 643815-3 classified as obsolete?

A: Obsolete classification indicates the manufacturer has discontinued active production and support for this part number. The substitute 3-643815-3 provides equivalent functionality with active product status and current compliance certifications.

Q: Are there packaging differences between 643815-3 and 3-643815-3?

A: The original 643815-3 packaging is not specified in available documentation. The substitute 3-643815-3 is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Does the MSL 1 (Unlimited) rating apply to both parts?

A: Yes. Both 643815-3 and 3-643815-3 carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints and no special storage or handling requirements.

Q: Are both parts subject to export control?

A: Both parts carry ECCN classification EAR99, indicating standard commercial export control treatment. Verify current export compliance requirements with your organization's trade compliance department.

Q: What is the base product number for these connectors?

A: Both parts share base product number 643815. The suffix "-3" designates the 3-position configuration within the MTA-100 series.