TE Connectivity 1-640427-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-640427-1 is an 11-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 20 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design, and free-hanging in-line mounting configuration with locking ramp fastening.

The 1-640427-1 is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, repair, and continued field deployment where this connector type remains in active use.

Substiute Parts

1-640427-1

TE Connectivity AMP ConnectorsIn Stock: 8911-640427-1 Datasheet

Current PartRFQ

4-640427-1

TE Connectivity AMP ConnectorsIn Stock: 9094-640427-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1-640427-1 is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Pitch: 11 positions at 0.156" (3.96mm) pitch
• Termination Technology: IDC cable termination for 20 AWG wire
• Mechanical Interface: Free-hanging in-line mounting with locking ramp fastening
• Series Designation: MTA-156 series compatibility
• Contact Finish Thickness: 80.0µin (2.03µm)

The substitute part 4-640427-1 maintains full equivalence across all mechanical and electrical parameters. The primary distinction is the contact finish material (tin versus tin-lead) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The 4-640427-1 serves as the direct active-production equivalent to the obsolete 1-640427-1. Both connectors are mechanically and electrically interchangeable across all functional parameters including position count, pitch, termination method, wire gauge, and mounting configuration.

Product Status Consideration: The 1-640427-1 is obsolete, while the 4-640427-1 is active. For new designs, repair operations, and ongoing system support, the 4-640427-1 is the appropriate selection.

Compliance Consideration: The 4-640427-1 is RoHS compliant, whereas the 1-640427-1 is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the 4-640427-1. The contact finish difference (tin versus tin-lead) is the material basis for this compliance distinction.

Electrical & Mechanical Equivalence: No functional differences exist between these parts. Contact finish thickness, contact type, termination technology, and mechanical interfaces are identical. Both connectors support discrete or ribbon cable configurations at 20 AWG.

Frequently Asked Questions (FAQ)

Q: Are the 1-640427-1 and 4-640427-1 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications: 11 positions at 0.156" pitch, free-hanging in-line mounting, locking ramp fastening, and closed-end design. They interface identically with mating plugs and cable assemblies.

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

A: The 1-640427-1 uses tin-lead contact finish, while the 4-640427-1 uses tin finish. Both maintain 80.0µin (2.03µm) thickness. The tin finish in the 4-640427-1 enables RoHS compliance. Functionally, both finishes provide equivalent electrical performance and contact reliability for this connector class.

Q: Can I use the 4-640427-1 as a direct replacement for the 1-640427-1?

A: Yes. The 4-640427-1 is the active-production equivalent. All electrical and mechanical parameters are identical. The 4-640427-1 is the recommended selection for all new applications and ongoing support of systems using the 1-640427-1.

Q: What is the significance of the product status difference?

A: The 1-640427-1 is obsolete and no longer manufactured. The 4-640427-1 is active production. For system maintenance and repair, the 4-640427-1 ensures continued availability and supply chain support.

Q: Are there packaging differences between these parts?

A: The 1-640427-1 packaging is unspecified in available documentation. The 4-640427-1 is supplied in bulk packaging. Both are available in new original condition.

Q: Does the IDC termination method work with both discrete and ribbon cable?

A: Yes. Both connectors support IDC termination for discrete or ribbon cable at 20 AWG wire gauge. The IDC technology allows simultaneous piercing and termination of multiple conductors.

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

A: Both connectors are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These connectors can be stored and handled without moisture control measures.