TE Connectivity 640434-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640434-3 is a 3-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 obsolete product status.

Due to its obsolete classification, locating original inventory may present supply chain challenges. An active equivalent part is available that maintains functional compatibility while offering improved compliance status and continued manufacturing support.

Substiute Parts

640434-3

TE Connectivity AMP ConnectorsIn Stock: 1055640434-3 Datasheet

Current PartRFQ

3-640434-3

TE Connectivity AMP ConnectorsIn Stock: 7183-640434-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 640434-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Rectangular receptacle
• Number of positions: 3
• Pitch: 0.156" (3.96mm)
• Contact type: Female socket
• Cable termination: IDC
• Wire gauge: 24 AWG
• Wire type: Discrete or ribbon cable
• Mounting type: Free hanging (in-line)
• Number of rows: 1
• Features: Closed end
• Contact finish thickness: 80.0µin (2.03µm)
• Color: White
• Series: MTA-156

The substitute part 3-640434-3 maintains full equivalence across all mandatory parameters. The primary difference is the contact finish material (tin versus tin-lead) and product status classification (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Ongoing Production:

The substitute part 3-640434-3 is the appropriate selection for new applications and production continuity. This part maintains full functional and mechanical compatibility with the original 640434-3 while offering the following advantages:

• Active product status ensures continued manufacturing availability and supply chain stability
• ROHS3 compliance aligns with current regulatory requirements for electronic components
• Tin contact finish eliminates lead content while maintaining the specified contact finish thickness of 80.0µin (2.03µm)

For Legacy System Maintenance:

The original 640434-3 remains functionally equivalent for applications where existing inventory is available and RoHS non-compliance is not a constraint. Both parts share identical mechanical dimensions, pitch, position count, and IDC termination characteristics.

Compliance Considerations:

Applications subject to RoHS3 regulations must use part 3-640434-3. The original 640434-3 is RoHS non-compliant due to tin-lead contact finish composition.

Frequently Asked Questions (FAQ)

Q: Are the 640434-3 and 3-640434-3 mechanically interchangeable?

A: Yes. Both parts are mechanically identical with respect to connector type, position count, pitch (0.156"), mounting configuration, and cable termination method. They are direct mechanical substitutes.

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

A: Both contact finishes are applied at the same thickness (80.0µin / 2.03µm) and provide equivalent electrical performance for IDC termination applications. The primary difference is material composition and regulatory compliance status.

Q: Can I use 3-640434-3 as a replacement for 640434-3 in existing assemblies?

A: Yes. The substitute part 3-640434-3 maintains full compatibility across all critical parameters including pitch, position count, contact type, and termination method. No design modifications are required.

Q: Why is the original 640434-3 classified as obsolete?

A: Obsolete classification indicates that TE Connectivity has discontinued active manufacturing and support for this part number. The active equivalent 3-640434-3 provides continued product availability.

Q: Does the packaging difference affect compatibility?

A: No. The original 640434-3 is supplied in unspecified packaging, while 3-640434-3 is supplied in bulk packaging. Packaging format does not affect connector functionality or mechanical compatibility.

Q: Are both parts suitable for discrete and ribbon cable applications?

A: Yes. Both the 640434-3 and 3-640434-3 support discrete or ribbon cable termination at 24 AWG wire gauge through IDC termination method.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.