TE Connectivity 1-640442-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-640442-8 is an 18-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as obsolete. Due to its obsolete product status, identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production and field service applications.

Substiute Parts

1-640442-8

TE Connectivity AMP ConnectorsIn Stock: 7841-640442-8 Datasheet

Current PartRFQ

4-640442-8

TE Connectivity AMP ConnectorsIn Stock: 7634-640442-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1-640442-8 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Connector type: Receptacle
• Contact type: Female socket
• Number of positions: 18
• Pitch: 0.100" (2.54mm)
• Number of rows: 1
• Cable termination method: IDC
• Wire gauge compatibility: 26 AWG
• Contact finish thickness: 80.0µin (2.03µm)

Mechanical Parameters:

• Mounting type: Free Hanging (In-Line), Right Angle
• Fastening type: Locking Ramp
• Features: Closed End
• Color: Blue
• Series: MTA-100

Environmental & Compliance Parameters:

• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8536.69.8000

The substitute part 4-640442-8 maintains full equivalence across all electrical and mechanical parameters. The primary distinction is the contact finish material (tin versus tin-lead) and the product status transition from obsolete to active.

Parameter Comparison

Engineering Selection Recommendations

The 4-640442-8 serves as the direct substitute for the obsolete 1-640442-8. Both connectors are manufactured by TE Connectivity within the MTA-100 series and maintain identical electrical and mechanical specifications across all critical parameters including position count, pitch, termination method, wire gauge, and mounting configuration.

Product Status Consideration: The 1-640442-8 is classified as obsolete, while the 4-640442-8 maintains active product status. For new designs and ongoing production, the 4-640442-8 is the appropriate selection to ensure long-term component availability and supply chain continuity.

Compliance Consideration: The 4-640442-8 is ROHS3 compliant, whereas the 1-640442-8 is RoHS non-compliant. Applications subject to RoHS regulations require the 4-640442-8. For legacy systems or applications without RoHS requirements, either part may be used based on availability and design constraints.

Contact Finish Consideration: The primary material difference is the contact finish. The 1-640442-8 features tin-lead finish, while the 4-640442-8 features tin finish. Both maintain identical contact finish thickness of 80.0µin (2.03µm). The tin finish of the 4-640442-8 aligns with modern manufacturing standards and RoHS compliance requirements.

Frequently Asked Questions (FAQ)

Q: Are the 1-640442-8 and 4-640442-8 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including 18-position configuration, 0.100" (2.54mm) pitch, single-row layout, free hanging in-line and right-angle mounting options, and locking ramp fastening. Physical dimensions and mating interfaces are equivalent.

Q: Are the 1-640442-8 and 4-640442-8 electrically interchangeable?

A: Yes. Both connectors support identical electrical specifications including IDC termination for 26 AWG discrete or ribbon cable, closed-end design, and contact finish thickness of 80.0µin (2.03µm). The contact finish material difference (tin-lead versus tin) does not affect electrical performance within the specified wire gauge and termination method.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: The contact finish thickness remains constant at 80.0µin (2.03µm) for both parts. The tin finish of the 4-640442-8 represents the modern manufacturing standard and is required for RoHS3 compliance. The tin-lead finish of the 1-640442-8 is associated with legacy manufacturing practices and is not RoHS compliant.

Q: Why is the 1-640442-8 listed as obsolete?

A: The 1-640442-8 has been superseded by the 4-640442-8 within the TE Connectivity product portfolio. The 4-640442-8 provides equivalent functionality with active product status, improved compliance certifications, and assured long-term availability.

Q: Can the 4-640442-8 be used as a direct replacement in existing designs using the 1-640442-8?

A: Yes. The 4-640442-8 is a direct substitute with identical electrical and mechanical specifications. No design modifications are required. The transition from tin-lead to tin contact finish and from RoHS non-compliant to ROHS3 compliant status represents an improvement in compliance and manufacturing standards.

Q: What is the packaging difference between these parts?

A: The 1-640442-8 packaging is not specified in the available documentation. The 4-640442-8 is supplied in bulk packaging. Confirm specific packaging requirements with the supplier based on application needs.

Q: Are both parts suitable for IDC termination with 26 AWG cable?

A: Yes. Both the 1-640442-8 and 4-640442-8 are designed for IDC termination with 26 AWG discrete or ribbon cable. The IDC contact design and termination specifications are identical between both parts.

Q: What is the Moisture Sensitivity Level for these connectors?

A: Both connectors have a Moisture Sensitivity Level of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or use.