TE Connectivity 640442-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640442-3 is a 3-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 product status.

Due to its obsolete classification, locating direct inventory of the 640442-3 may present supply chain challenges. Identifying equivalent and substitute parts ensures design continuity and maintains system compatibility while accommodating current manufacturing and compliance requirements.

Substiute Parts

640442-3

TE Connectivity AMP ConnectorsIn Stock: 1136640442-3 Datasheet

Current PartRFQ

3-640442-3

TE Connectivity AMP ConnectorsIn Stock: 190743-640442-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 640442-3 is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility Parameters:

• Connector type (Receptacle)
• Number of positions (3)
• Pitch spacing (0.100" / 2.54mm)
• Number of rows (1)
• Mounting configuration (Free Hanging, In-Line, Right Angle)
• Fastening mechanism (Locking Ramp)

Electrical Compatibility Parameters:

• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge rating (26 AWG)
• Wire type support (Discrete or Ribbon Cable)

Physical Characteristics:

• Closed end feature
• Blue color designation
• MTA-100 series classification

The substitute part 3-640442-3 maintains identical mechanical and electrical specifications while differing in contact finish composition and product status classification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 3-640442-3

The 3-640442-3 is the direct functional equivalent of the 640442-3 and is the appropriate selection for new designs and component replacement applications.

Justification:

1. Product Status: The 3-640442-3 maintains active product status with current manufacturing support, whereas the 640442-3 is classified as obsolete. Active status ensures ongoing availability and supply chain reliability.

2. Compliance Posture: The 3-640442-3 is RoHS compliant, meeting current regulatory requirements for electronic components in most jurisdictions. The 640442-3 is RoHS non-compliant, which may restrict its use in new applications subject to RoHS directives.

3. Contact Finish Specification: The 3-640442-3 utilizes pure tin contact finish, while the 640442-3 uses tin-lead finish. Both finishes maintain the specified 80.0µin (2.03µm) thickness. The tin finish of the substitute part aligns with modern manufacturing standards and RoHS compliance frameworks.

4. Mechanical and Electrical Equivalence: All mechanical mounting parameters, electrical contact specifications, and cable termination characteristics are identical between the two parts, ensuring direct functional interchangeability.

5. Inventory Availability: The 3-640442-3 is available in significantly higher quantities (18,970 pieces) compared to the 640442-3 (1,118 pieces), supporting sustained production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3-640442-3 be used as a direct replacement for the 640442-3 in existing assemblies?

A: Yes. The 3-640442-3 is mechanically and electrically equivalent to the 640442-3. Both connectors share identical pitch spacing (0.100"), position count (3), contact configuration (female socket), IDC termination method, and 26 AWG wire gauge rating. The connectors are directly interchangeable in applications where the contact finish material change from tin-lead to tin is acceptable.

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

A: The 640442-3 features tin-lead contact finish, while the 3-640442-3 features pure tin finish. Both maintain the same thickness specification of 80.0µin (2.03µm). The tin finish of the substitute part is compatible with modern soldering processes and RoHS compliance requirements. The contact finish does not affect the mechanical mating or electrical performance of the IDC termination.

Q: Why is the 640442-3 classified as obsolete?

A: The 640442-3 is designated as obsolete by TE Connectivity, indicating that the manufacturer has discontinued active production and support for this part number. The 3-640442-3 represents the current active equivalent in the product line.

Q: Are there any packaging differences between the two parts?

A: The 640442-3 packaging specification is not provided in the technical data. The 3-640442-3 is supplied in bulk packaging. For specific packaging requirements, consult the respective component datasheets or contact the manufacturer directly.

Q: Does the RoHS compliance status affect connector performance?

A: RoHS compliance status reflects the material composition of the connector, specifically the absence of lead in the contact finish. The 3-640442-3 RoHS compliance does not degrade electrical or mechanical performance. RoHS compliance is a regulatory requirement in many markets and may be mandatory for new product designs.

Q: Can both connectors be used interchangeably in ribbon cable applications?

A: Yes. Both the 640442-3 and 3-640442-3 support discrete or ribbon cable termination via IDC method at 26 AWG wire gauge. The connectors are functionally equivalent for ribbon cable applications.

Q: What is the moisture sensitivity level, and does it differ between the parts?

A: Both connectors are rated at Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements. This specification is identical for both parts.