TE Connectivity 643820-6 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 643820-6 is a 6-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 24 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 996 units in stock. Substitute parts are identified to address specific compliance requirements, packaging preferences, or inventory availability while maintaining functional and mechanical compatibility.

Substiute Parts

643820-6

TE Connectivity AMP ConnectorsIn Stock: 1018643820-6 Datasheet

Current PartRFQ

3-643820-6

TE Connectivity AMP ConnectorsIn Stock: 8763-643820-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part (643820-6) and the direct equivalent (3-643820-6) is based on strict electrical and mechanical parameter alignment. Both parts share identical specifications across all critical functional parameters: 6-position receptacle configuration, 0.156" pitch, MTA-156 series designation, IDC termination method, 24 AWG wire gauge compatibility, female socket contact type, free-hanging in-line mounting, and locking ramp fastening mechanism.

The primary distinction between these parts lies in contact finish composition and regulatory compliance status. The main part (643820-6) features a tin-lead contact finish and carries RoHS non-compliant status, while the substitute part (3-643820-6) utilizes a tin contact finish and achieves ROHS3 compliance. Both maintain identical contact finish thickness (80.0µin / 2.03µm), ensuring equivalent electrical performance and contact resistance characteristics.

Substitution is permissible when:

• Connector position count, pitch, and series designation remain unchanged
• IDC termination capability and 24 AWG wire gauge compatibility are maintained
• Mounting configuration and fastening mechanism are identical
• Regulatory compliance requirements align with application specifications
• Packaging format (bulk versus standard) accommodates supply chain requirements

Parameter Comparison

Engineering Selection Recommendations

Selection between the main part (643820-6) and substitute part (3-643820-6) is determined by regulatory compliance requirements and application constraints.

Select 643820-6 when:

• RoHS compliance is not a requirement for the application
• Tin-lead contact finish is specified in design documentation
• Standard packaging format is required for inventory management
• Legacy system compatibility with existing tin-lead connector stock is necessary

Select 3-643820-6 when:

• ROHS3 compliance is mandated by customer specifications or regional regulations
• Tin contact finish meets application electrical performance requirements
• Bulk packaging format aligns with supply chain and manufacturing processes
• New designs require compliance with current environmental and safety standards

Both parts maintain identical electrical performance characteristics, mechanical compatibility, and functional specifications across all critical parameters. The choice between these parts is driven by regulatory compliance status and contact finish material requirements rather than functional capability differences.

Frequently Asked Questions (FAQ)

Q: Can 643820-6 and 3-643820-6 be used interchangeably in the same application?

A: These parts are mechanically and electrically interchangeable when contact finish material and RoHS compliance status do not impose constraints. Both connectors feature identical pitch, position count, termination method, and mounting configuration. Selection depends on whether the application requires ROHS3 compliance and whether tin-lead or tin contact finish is specified.

Q: What is the functional difference between tin-lead and tin contact finishes on these connectors?

A: Both contact finishes are applied at identical thickness (80.0µin / 2.03µm) and provide equivalent electrical performance and contact resistance characteristics. The primary distinction is material composition and regulatory compliance. Tin-lead finish is associated with RoHS non-compliant status, while tin finish supports ROHS3 compliance.

Q: Are there any mechanical compatibility issues when substituting between these parts?

A: No mechanical compatibility issues exist. Both parts share identical specifications for pitch (0.156"), position count (6), mounting type (free-hanging in-line), fastening mechanism (locking ramp), and connector body design. Physical dimensions and mating characteristics are identical.

Q: What does the packaging difference (standard versus bulk) mean for component selection?

A: Packaging format affects supply chain logistics and inventory management but does not impact connector functionality or performance. Standard packaging typically includes individual unit packaging, while bulk packaging consolidates multiple units. Selection depends on manufacturing process requirements and inventory handling procedures.

Q: Is the MSL (Moisture Sensitivity Level) rating identical for both parts?

A: Yes. Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are identical for both the main part and substitute part.

Q: Can these connectors accommodate both discrete and ribbon cable?

A: Yes. Both parts support IDC termination for discrete or ribbon cable configurations at 24 AWG wire gauge. The IDC termination method and connector design accommodate both cable types without modification.

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

A: The polarizing key ensures correct connector orientation during mating, preventing reversed insertion. This feature is present on both the main part and substitute part, providing identical protection against incorrect assembly.

Q: Are there any REACH or export control differences between these parts?

A: Both parts carry identical ECCN classification (EAR99) and HTSUS code (8536.69.8000). The main part lists REACH status as "REACH Affected," while the substitute part lists "Vendor Undefined." Export control and regulatory classification are functionally equivalent for both parts.