TE Connectivity 640434-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640434-8 is an 8-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 tin-lead contact finish and is classified as a free-hanging, in-line mounted component with closed-end design. The part is currently active in production with 809 units in stock.

Substitute parts are identified to address specific application requirements including RoHS compliance status, packaging format, and contact finish specifications while maintaining electrical and mechanical compatibility.

Substiute Parts

640434-8

TE Connectivity AMP ConnectorsIn Stock: 900640434-8 Datasheet

Current PartRFQ

3-640434-8

TE Connectivity AMP ConnectorsIn Stock: 87413-640434-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part (640434-8) and the identified equivalent (3-640434-8) is valid based on the following matching parameters:

Critical Electrical and Mechanical Parameters (Must Match):

• Connector type: Receptacle
• Number of positions: 8
• Pitch: 0.156" (3.96mm)
• Contact type: Female socket
• Cable termination: IDC
• Wire gauge: 24 AWG
• Series designation: MTA-156
• Mounting configuration: Free hanging (in-line)
• Contact finish thickness: 80.0µin (2.03µm)
• Color: White
• Features: Closed end

Allowable Variations:

• Contact finish: Tin-lead (640434-8) versus tin (3-640434-8) — both finishes are compatible for IDC receptacle applications
• RoHS compliance status: Non-compliant (640434-8) versus ROHS3 compliant (3-640434-8) — substitution direction depends on regulatory requirements
• Packaging format: Standard versus bulk — does not affect functional compatibility
• Inventory availability: Varies between part numbers

Parameter Comparison

Engineering Selection Recommendations

Selection Criteria Based on Regulatory and Compliance Requirements:

Choose 640434-8 (Tin-Lead, RoHS Non-Compliant) when:

• Applications operate in regions or markets without RoHS mandates
• Legacy system compatibility requires tin-lead contact finish
• Existing inventory management prioritizes the original specification
• Product status: Active with 809 units available

Choose 3-640434-8 (Tin, ROHS3 Compliant) when:

• Design must comply with ROHS3 (Restriction of Hazardous Substances Directive 3) regulations
• Applications target European Union markets or equivalent regulatory jurisdictions
• New designs require lead-free contact finish specifications
• Higher inventory availability (8713 units) supports procurement timelines
• Product status: Active with extended stock availability

Functional Compatibility: Both parts maintain identical electrical and mechanical specifications across all critical parameters including connector geometry, contact configuration, termination method, and wire gauge compatibility. The substitution is valid for direct replacement in IDC ribbon cable and discrete wire applications.

Frequently Asked Questions (FAQ)

Q: Can 3-640434-8 directly replace 640434-8 in existing assemblies?

A: Yes. Both connectors are mechanically and electrically identical in all critical parameters including pitch, contact type, termination method, and wire gauge. The primary difference is contact finish (tin versus tin-lead) and RoHS compliance status. Direct substitution is valid from a functional standpoint.

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

A: The 640434-8 features tin-lead contact finish, while the 3-640434-8 features tin contact finish. Both finishes are specified at 80.0µin (2.03µm) thickness. The selection between these finishes depends on regulatory requirements and application environment rather than electrical performance.

Q: Why does the RoHS status differ between these parts?

A: The 640434-8 is RoHS non-compliant due to its tin-lead contact finish, which contains lead. The 3-640434-8 is ROHS3 compliant because it uses lead-free tin finish. Both parts are from the same manufacturer and series, with the compliant version designed to meet European Union and equivalent regulatory standards.

Q: Are there packaging differences between these connectors?

A: Yes. The 640434-8 is supplied in standard packaging, while the 3-640434-8 is supplied in bulk packaging. Packaging format does not affect connector functionality or compatibility; it relates to procurement quantity and handling procedures.

Q: Which part should be specified for new designs?

A: For new designs targeting markets with RoHS requirements, specify 3-640434-8. For applications without RoHS mandates or requiring legacy compatibility, 640434-8 remains valid. Both parts are active products with confirmed inventory availability.

Q: Is the contact finish thickness identical between both parts?

A: Yes. Both 640434-8 and 3-640434-8 specify contact finish thickness at 80.0µin (2.03µm), ensuring equivalent electrical contact resistance and durability characteristics.

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

A: Yes. Both parts support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method at 24 AWG wire gauge.

Q: What is the pitch specification for these connectors?

A: Both connectors feature 0.156" (3.96mm) pitch, which is the standard spacing for the MTA-156 series. This pitch is critical for mating with corresponding plug connectors and PCB layouts.