TE Connectivity 640426-6 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640426-6 is a 6-position rectangular receptacle connector from the MTA-156 series, designed for discrete wire termination using insulation displacement contact (IDC) technology. This connector features tin-plated female socket contacts rated for 18 AWG wire gauge and operates with a 0.156" (3.96mm) pitch configuration.

The 640426-6 is classified as obsolete. Locating equivalent and substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector series.

Substiute Parts

640426-6

TE Connectivity AMP ConnectorsIn Stock: 877640426-6 Datasheet

Current PartRFQ

3-640426-6

TE Connectivity AMP ConnectorsIn Stock: 30103-640426-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 640426-6 is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Pitch: 6 positions at 0.156" (3.96mm) pitch
• Termination Technology: IDC cable termination for discrete wire
• Wire Gauge Compatibility: 18 AWG rated
• Contact Material & Finish: Tin plating at 80.0µin (2.03µm) thickness
• Mechanical Interface: Free hanging in-line mounting with locking ramp fastening
• Series Designation: MTA-156 series

Parts meeting all these parameters are classified as direct substitutes. Variations in packaging, product status, or compliance certifications do not affect functional interchangeability when all electrical and mechanical parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

The 3-640426-6 is a direct functional equivalent to the 640426-6 across all electrical and mechanical parameters. The primary distinction between these parts is product status and regulatory compliance.

640426-6 (Obsolete): This part is no longer in active production. While 837 units are currently in stock, future availability cannot be assured. The part carries RoHS non-compliant status.

3-640426-6 (Active): This part is in active production with significantly higher inventory availability (2920 units in stock). It carries RoHS Compliant certification, meeting current environmental and regulatory requirements. The REACH status is listed as Vendor Undefined for this part.

For new designs, ongoing production, or systems requiring RoHS compliance, the 3-640426-6 is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part provides identical functional performance. Both parts share the same base product number (640426) and are mechanically and electrically interchangeable.

Frequently Asked Questions (FAQ)

Q: Are the 640426-6 and 3-640426-6 mechanically interchangeable?

A: Yes. Both parts are 6-position receptacle connectors with identical pitch (0.156"), mounting configuration (free hanging in-line), and fastening mechanism (locking ramp). They mate with the same plug connectors and occupy identical physical space.

Q: Are the 640426-6 and 3-640426-6 electrically interchangeable?

A: Yes. Both parts feature identical contact type (female socket), wire gauge rating (18 AWG), termination method (IDC), and contact finish (tin at 80.0µin thickness). Electrical performance and signal integrity are equivalent.

Q: What is the difference between these two parts?

A: The primary differences are product status and compliance certification. The 640426-6 is obsolete and RoHS non-compliant. The 3-640426-6 is in active production and RoHS compliant. Packaging differs (the 640426-6 packaging is unspecified; the 3-640426-6 is supplied in bulk). Inventory levels also differ significantly.

Q: Can I use the 3-640426-6 as a replacement for the 640426-6 in existing systems?

A: Yes. The 3-640426-6 provides identical form, fit, and function. It is a direct substitute for the obsolete 640426-6 in all applications.

Q: Why does the 640426-6 show as obsolete?

A: The 640426-6 has been superseded by the 3-640426-6 in the TE Connectivity product line. The newer part number incorporates RoHS compliance and remains in active production.

Q: Are there any compatibility concerns with IDC termination between these parts?

A: No. Both parts use identical IDC termination technology for 18 AWG discrete wire. Termination tooling, wire preparation, and contact engagement are equivalent.

Q: What does the "3-" prefix in 3-640426-6 indicate?

A: The "3-" prefix is part of the TE Connectivity part numbering scheme and does not indicate a revision or functional change. It represents the current production designation for this connector configuration.