TE Connectivity 643819-6 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643819-6 is a 6-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design, and polarizing key for secure mating.

The 643819-6 is classified as obsolete. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this connector type is specified or functionally required.

Substiute Parts

643819-6

TE Connectivity AMP ConnectorsIn Stock: 1151643819-6 Datasheet

Current PartRFQ

3-643819-6

TE Connectivity AMP ConnectorsIn Stock: 20283-643819-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 643819-6 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle)
• Number of positions (6)
• Pitch specification (0.156" / 3.96mm)
• Series designation (MTA-156)
• Cable termination method (IDC)
• Wire gauge compatibility (22 AWG)
• Contact type (Female Socket)
• Mounting configuration (Free Hanging In-Line)
• Fastening mechanism (Locking Ramp)
• Physical features (Closed End, Polarizing Key)

The substitute part 3-643819-6 maintains full equivalence across all mandatory parameters. The primary distinction between the main part and its substitute is the contact finish specification and product status classification.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Active Production:

The 3-643819-6 is the appropriate selection for new applications. This part is classified as active product status and carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution. The substitute part maintains full mechanical and electrical compatibility with the 643819-6 while offering improved compliance posture.

For Legacy System Support and Repair:

The 643819-6 remains functionally equivalent to 3-643819-6 for applications where the connector is already installed or where legacy system specifications explicitly require the tin-lead contact finish. Both parts share identical mechanical interfaces, electrical performance characteristics, and physical dimensions within the MTA-156 series specification.

Contact Finish Consideration:

The primary technical distinction is the contact finish specification. The 643819-6 features tin-lead plating, while the 3-643819-6 features tin plating. Both finishes maintain the specified 80.0µin (2.03µm) thickness and are suitable for IDC termination with 22 AWG cable. Selection between these finishes depends on existing system specifications and regulatory compliance requirements applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can the 3-643819-6 be used as a direct replacement for the 643819-6 in existing assemblies?

A: Yes. The 3-643819-6 is mechanically and electrically equivalent to the 643819-6. Both connectors share identical pitch, position count, mounting configuration, and IDC termination specifications. The connector will mate with corresponding plug connectors designed for the MTA-156 series without modification.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: Both contact finishes are specified at 80.0µin (2.03µm) thickness and provide equivalent electrical performance for IDC applications. The tin-lead finish in the 643819-6 is characteristic of older component designs. The tin finish in the 3-643819-6 reflects current manufacturing standards and regulatory compliance with ROHS3 requirements.

Q: Why is the 643819-6 classified as obsolete?

A: The 643819-6 is obsolete due to its RoHS non-compliant status and the availability of the functionally equivalent 3-643819-6, which meets current ROHS3 compliance standards. TE Connectivity has transitioned production to the compliant variant.

Q: Are there any packaging differences between these parts?

A: The 643819-6 is supplied in unspecified packaging, while the 3-643819-6 is supplied in bulk packaging. Both parts are available in new original condition with substantial inventory levels.

Q: What cable types are compatible with both connectors?

A: Both the 643819-6 and 3-643819-6 accept discrete or ribbon cable at 22 AWG wire gauge. The IDC termination method accommodates both cable types without requiring additional adapters or modifications.

Q: Are there any environmental or moisture sensitivity concerns with either part?

A: Both connectors carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts are suitable for standard industrial and commercial environments without special handling or storage requirements.

Q: Can these connectors be used interchangeably with other MTA-156 series components?

A: Yes. Both the 643819-6 and 3-643819-6 are fully compatible with all MTA-156 series plug connectors and accessories. The 0.156" pitch and 6-position configuration ensure mechanical and electrical compatibility across the series.