TE Connectivity 640431-2 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640431-2 is a 2-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 18 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as obsolete product status.

Due to its obsolete classification, identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production, repair, and maintenance applications. The substitute part identified maintains functional compatibility while offering improved product status and regulatory compliance.

Substiute Parts

640431-2

TE Connectivity AMP ConnectorsIn Stock: 1113640431-2 Datasheet

Current PartRFQ

3-640431-2

TE Connectivity AMP ConnectorsIn Stock: 22973-640431-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 640431-2 and the equivalent part 3-640431-2 is based on strict electrical and mechanical parameter alignment within the MTA-156 series. Both parts maintain identical specifications across all critical substitution criteria:

Key Parameters Determining Substitution Eligibility:

• Connector type and contact configuration (2-position receptacle, female socket)
• Pitch and row spacing (0.156" single-row configuration)
• IDC cable termination compatibility with 18 AWG wire
• Contact finish thickness (80.0µin)
• Closed-end housing design
• Moisture sensitivity classification (MSL 1)
• Mounting method (free hanging in-line)

The primary distinction between these parts is the contact finish composition (tin-lead versus tin) and product status classification. The substitute part 3-640431-2 represents an active product with improved regulatory compliance, making it the preferred selection for new designs and ongoing applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 3-640431-2

The substitute part 3-640431-2 is the appropriate selection for all applications currently using or specifying the obsolete 640431-2. This recommendation is based on the following engineering and compliance factors:

Product Status: The 3-640431-2 maintains active product status, ensuring long-term availability and continued manufacturer support. The original 640431-2 is classified as obsolete, presenting supply chain risk for ongoing production requirements.

Regulatory Compliance: The 3-640431-2 is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original part is RoHS non-compliant, which may restrict use in regulated markets and applications subject to environmental directives.

Functional Equivalence: Both parts maintain identical electrical and mechanical specifications across all critical parameters, including connector configuration, pitch, termination method, wire gauge compatibility, and contact finish thickness. The parts are mechanically and electrically interchangeable.

Contact Finish Consideration: The substitute part uses tin contact finish in place of the original tin-lead composition. Both finishes maintain the specified 80.0µin thickness and are compatible with IDC termination and 18 AWG wire applications. The tin finish in the substitute part aligns with RoHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Are the 640431-2 and 3-640431-2 mechanically interchangeable?

A: Yes. Both parts are 2-position receptacle connectors with identical pitch (0.156"), row configuration (single row), mounting type (free hanging in-line), and closed-end housing design. They occupy the same physical footprint and mate with identical plug connectors.

Q: Are these parts electrically compatible?

A: Yes. Both parts support identical IDC termination with 18 AWG discrete or ribbon cable. Contact finish thickness is identical at 80.0µin (2.03µm), and both maintain MSL 1 moisture sensitivity classification. Electrical performance is equivalent.

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

A: The original 640431-2 uses tin-lead contact finish, while the substitute 3-640431-2 uses tin finish. Both finishes are applied to the same thickness (80.0µin) and provide equivalent contact performance for IDC applications. The tin finish in the substitute part complies with RoHS3 environmental restrictions that prohibit lead in electronic components.

Q: Why is the original part classified as obsolete?

A: The 640431-2 is obsolete due to its RoHS non-compliant status and the availability of the functionally equivalent, RoHS3-compliant substitute 3-640431-2. Manufacturers typically transition obsolete parts to active replacements to meet current regulatory requirements.

Q: Can I use the 3-640431-2 as a direct replacement in existing designs?

A: Yes. The 3-640431-2 is a direct substitute for the 640431-2 with no design modifications required. All mechanical, electrical, and termination specifications are identical, ensuring drop-in compatibility.

Q: What is the packaging difference between these parts?

A: The original 640431-2 packaging is not specified in available documentation. The substitute 3-640431-2 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are both parts available from TE Connectivity?

A: The 640431-2 is obsolete and availability is limited to existing inventory. The 3-640431-2 is an active product with current manufacturing and distribution through TE Connectivity and authorized distributors.

Q: Do these connectors support both discrete and ribbon cable?

A: Yes. Both the 640431-2 and 3-640431-2 support IDC termination with discrete or ribbon cable at 18 AWG wire gauge.