TE Connectivity 643819-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643819-8 is an 8-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 with polarizing key, and free-hanging in-line mounting configuration. The part is currently active in production with 930 units in stock.

Substitute parts are identified to address specific application requirements, including RoHS compliance status and contact finish variations, while maintaining electrical and mechanical compatibility within the MTA-156 series specification.

Substiute Parts

643819-8

TE Connectivity AMP ConnectorsIn Stock: 942643819-8 Datasheet

Current PartRFQ

3-643819-8

TE Connectivity AMP ConnectorsIn Stock: 10713-643819-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the MTA-156 series is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Receptacle)
• Number of positions (8)
• Contact type (Female Socket)
• Pitch (0.156" / 3.96mm)
• Wire gauge (22 AWG)
• Cable termination method (IDC)

Mechanical Compatibility Parameters:

• Number of rows (1)
• Mounting type (Free Hanging In-Line)
• Fastening type (Locking Ramp)
• Features (Closed End, Polarizing Key)
• Contact finish thickness (80.0µin / 2.03µm)

Environmental & Compliance Parameters:

• Moisture Sensitivity Level (MSL 1)
• ECCN classification (EAR99)
• HTSUS code (8536.69.8000)

The identified substitute part 3-643819-8 maintains full equivalence across all electrical and mechanical parameters. The primary difference is the contact finish specification (tin versus tin-lead) and corresponding RoHS compliance status, which does not affect connector functionality or interchangeability in applications where the contact finish material is not a design constraint.

Parameter Comparison

Engineering Selection Recommendations

643819-8 Selection Criteria: The 643819-8 is appropriate for applications where tin-lead contact finish is specified or required by design documentation. This part is RoHS non-compliant and suitable for legacy systems or applications where RoHS compliance is not mandated. Current inventory of 930 units supports immediate availability.

3-643819-8 Selection Criteria: The 3-643819-8 substitute is appropriate for applications requiring ROHS3 compliance. This part maintains identical electrical and mechanical specifications to the 643819-8 while providing RoHS compliance through tin contact finish instead of tin-lead. The higher inventory level (1029 units) provides extended availability. Selection of this substitute is valid when RoHS compliance is a design requirement and contact finish material specification does not impose constraints.

Compliance Considerations: Applications subject to RoHS directives or customer specifications requiring RoHS compliance must use the 3-643819-8 substitute. Applications with no RoHS requirement may use either part based on design specification and inventory availability.

Frequently Asked Questions (FAQ)

Q: Are the 643819-8 and 3-643819-8 electrically interchangeable?

A: Yes. Both parts are electrically equivalent. They share identical contact type, pitch, number of positions, wire gauge, and IDC termination method. The contact finish difference (tin-lead versus tin) does not affect electrical performance or signal integrity.

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

A: The primary difference is the contact finish material and corresponding RoHS compliance status. The 643819-8 uses tin-lead finish and is RoHS non-compliant. The 3-643819-8 uses tin finish and is ROHS3 compliant. Both maintain the same contact finish thickness of 80.0µin (2.03µm).

Q: Can I use the 3-643819-8 as a direct replacement for the 643819-8 in existing designs?

A: Yes, the 3-643819-8 is mechanically and electrically compatible with the 643819-8. Substitution is valid provided the design does not explicitly require tin-lead contact finish. Verify design documentation for any specific contact finish requirements before substitution.

Q: What does IDC termination mean?

A: IDC (Insulation Displacement Contact) termination is a cable connection method where the connector contacts pierce the insulation of the wire without requiring prior stripping. Both the 643819-8 and 3-643819-8 support IDC termination with 22 AWG discrete or ribbon cable.

Q: Are both parts suitable for ribbon cable applications?

A: Yes. Both the 643819-8 and 3-643819-8 support discrete or ribbon cable with 22 AWG wire gauge. The IDC termination method accommodates both cable types.

Q: What is the significance of the polarizing key feature?

A: The polarizing key is a mechanical feature that prevents incorrect connector mating orientation. Both parts include this feature to ensure proper alignment during assembly.

Q: Does the packaging difference affect compatibility?

A: No. The 643819-8 is supplied in standard packaging while the 3-643819-8 is supplied in bulk packaging. Packaging does not affect connector functionality or interchangeability.

Q: What is Moisture Sensitivity Level 1?

A: MSL 1 indicates unlimited moisture sensitivity, meaning the connector has no moisture sensitivity restrictions and requires no special handling or storage conditions.