TE Connectivity 644083-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644083-8 is an 8-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. The part is Active in product status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when inventory constraints, packaging requirements, or specific contact finish specifications necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

644083-8

TE Connectivity AMP ConnectorsIn Stock: 832644083-8 Datasheet

Current PartRFQ

3-644083-8

TE Connectivity AMP ConnectorsIn Stock: 50103-644083-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 644083-8 and the identified equivalent 3-644083-8 is valid based on matching critical electrical and mechanical parameters. Both parts maintain identical specifications for connector type (receptacle), position count (8), pitch (0.100"), row configuration (1 row), contact type (female socket), cable termination method (IDC), wire gauge (22 AWG), mounting type (free hanging in-line and right angle), and fastening mechanism (locking ramp). Both parts belong to the TE Connectivity MTA-100 series and share the same base product number (644083).

The primary difference between these parts is the contact finish specification: the main part 644083-8 features tin-lead finish, while the substitute 3-644083-8 features tin finish. Both finishes maintain the same contact finish thickness of 80.0µin (2.03µm), ensuring equivalent electrical performance and contact resistance characteristics. Secondary differences include packaging format (standard versus bulk) and RoHS certification level (RoHS Compliant versus ROHS3 Compliant), neither of which affects functional compatibility in the connector interface.

Parameter Comparison

Engineering Selection Recommendations

Both 644083-8 and 3-644083-8 are Active products from TE Connectivity with full compliance certifications. Selection between these parts should be based on the following criteria:

Contact Finish Consideration: The main part 644083-8 specifies tin-lead finish, while the substitute 3-644083-8 specifies tin finish. Both finishes are applied at identical thickness (80.0µin). Selection depends on application requirements and regulatory environment. The tin-lead finish in 644083-8 may be preferred in applications where lead-based finishes are explicitly specified or where legacy system compatibility is required. The tin finish in 3-644083-8 aligns with ROHS3 compliance and modern manufacturing standards.

Compliance Status: Both parts maintain RoHS compliance. The 3-644083-8 carries ROHS3 certification, representing the most current RoHS standard. The 644083-8 carries RoHS Compliant status. For new designs or systems requiring ROHS3 certification, 3-644083-8 is the appropriate selection.

Inventory and Packaging: The 3-644083-8 substitute offers significantly higher inventory availability (4956 pieces) compared to the main part (803 pieces) and is supplied in bulk packaging. For high-volume procurement or time-sensitive applications, the substitute part provides supply chain advantages.

Functional Equivalence: All critical electrical and mechanical parameters are identical. Both parts interface identically with MTA-100 series plugs and support the same IDC termination process with 22 AWG cable. Direct substitution is electrically and mechanically valid.

Frequently Asked Questions (FAQ)

Q: Can 3-644083-8 be used as a direct replacement for 644083-8 in existing designs?

A: Yes. Both parts are functionally equivalent across all critical parameters: 8-position receptacle configuration, 0.100" pitch, IDC termination, 22 AWG wire gauge, locking ramp fastening, and MTA-100 series compatibility. The contact finish difference (tin-lead versus tin) does not affect electrical performance or mechanical interface compatibility.

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

A: Both finishes are applied at 80.0µin thickness and provide equivalent electrical conductivity and contact resistance. Tin-lead finish (644083-8) contains lead as an alloying element, while tin finish (3-644083-8) is pure tin. The selection depends on application requirements, regulatory compliance needs, and system specifications. Tin finish aligns with ROHS3 standards and modern environmental regulations.

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

A: No compatibility issues exist. Both parts share identical mechanical dimensions, pitch spacing, mounting configuration, and fastening mechanisms. They interface identically with MTA-100 series plug connectors and support the same IDC termination tooling and cable types.

Q: What does the packaging difference mean for procurement?

A: The main part 644083-8 is supplied in standard packaging, while the substitute 3-644083-8 is supplied in bulk packaging. Bulk packaging typically offers cost advantages for high-volume orders and faster delivery for large quantities. Standard packaging may be preferred for smaller orders or applications requiring individual unit handling.

Q: Which part should be selected for new product designs?

A: For new designs, 3-644083-8 is recommended based on ROHS3 compliance certification, higher inventory availability, and alignment with current manufacturing standards. The tin contact finish meets modern regulatory requirements while maintaining full electrical and mechanical compatibility with the MTA-100 series ecosystem.

Q: Are both parts RoHS compliant?

A: Yes. Both 644083-8 and 3-644083-8 are RoHS compliant. The 3-644083-8 carries the more current ROHS3 certification, while 644083-8 carries RoHS Compliant status. Both meet RoHS requirements for restricted substance limitations.

Q: Can these connectors be used with both discrete and ribbon cable?

A: Yes. Both parts support discrete or ribbon cable termination via IDC method at 22 AWG wire gauge. The IDC termination process is identical for both connector variants.