TE Connectivity 640428-6 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640428-6 is a 6-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and free-hanging in-line mounting with locking ramp fastening.

The 640428-6 is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, repair, and continued field deployment where this connector type remains in use.

Substiute Parts

640428-6

TE Connectivity AMP ConnectorsIn Stock: 910640428-6 Datasheet

Current PartRFQ

3-640428-6

TE Connectivity AMP ConnectorsIn Stock: 12703-640428-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 640428-6 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Series: MTA-156
• Connector Type: Receptacle
• Number of Positions: 6
• Pitch: 0.156" (3.96mm)
• Cable Termination: IDC
• Wire Gauge: 22 AWG
• Contact Type: Female Socket
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Locking Ramp
• Features: Closed End

Allowable Variations:

• Contact Finish: Tin-Lead to Tin (both provide equivalent electrical and mechanical performance within the MTA-156 specification)
• Product Status: Obsolete to Active (active status indicates continued availability)
• RoHS Compliance: Non-compliant to Compliant (compliance represents regulatory advancement)
• Packaging: Bulk availability increases sourcing flexibility

The substitute part 3-640428-6 maintains full mechanical and electrical compatibility with the original 640428-6 while offering improved regulatory compliance and active product status.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Ongoing Production: The 3-640428-6 is the appropriate selection. This part maintains full mechanical and electrical compatibility with the original 640428-6 while offering active product status and RoHS compliance. Active status ensures continued manufacturer support, availability, and supply chain stability. RoHS compliance aligns with current regulatory requirements for electronic components in most markets.

For Legacy System Maintenance: The 640428-6 remains functionally equivalent to the 3-640428-6 for direct replacement in existing assemblies. The contact finish variation (tin-lead versus tin) does not affect mechanical fit, electrical performance, or IDC termination compatibility. Both parts share identical pitch, position count, wire gauge rating, and mounting characteristics.

Regulatory Considerations: The 3-640428-6 RoHS compliance status provides regulatory advantage for systems subject to RoHS directives. Both parts carry identical ECCN and HTSUS classifications, indicating equivalent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the 3-640428-6 directly replace the 640428-6 in existing assemblies?

A: Yes. The 3-640428-6 is mechanically and electrically equivalent to the 640428-6. Both connectors share identical pitch (0.156"), position count (6), wire gauge (22 AWG), mounting type (free hanging in-line), and fastening mechanism (locking ramp). The contact finish difference (tin versus tin-lead) does not affect compatibility or performance.

Q: What is the significance of the contact finish change from tin-lead to tin?

A: Both tin-lead and tin contact finishes provide equivalent electrical conductivity and mechanical engagement within the MTA-156 specification. The change to tin reflects industry-wide transition to lead-free materials and supports RoHS compliance requirements.

Q: Why is the 640428-6 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this part number. The 3-640428-6 represents the current active equivalent, ensuring access to ongoing supply and manufacturer technical support.

Q: Are there packaging differences between these parts?

A: The 640428-6 packaging is not specified in available documentation. The 3-640428-6 is supplied in bulk packaging. Bulk packaging is standard for active production components and supports efficient inventory management.

Q: Do both parts support the same cable types?

A: Yes. Both the 640428-6 and 3-640428-6 support IDC termination with discrete or ribbon cable at 22 AWG wire gauge. The closed-end design and locking ramp fastening are identical across both parts.

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

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These connectors do not require special moisture control during storage, handling, or assembly.