TE Connectivity AMP Connectors 644743-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644743-2 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 7 positions at 0.100" (2.54mm) pitch, utilizing male pin contacts with kinked pin solder termination. The product is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and procurement needs.

Substiute Parts

644743-2

TE Connectivity AMP ConnectorsIn Stock: 726644743-2 Datasheet

Current PartRFQ

0022474073

MolexIn Stock: 10390022474073 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644743-2 is determined by alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 7
• Number of Rows: 1
• Mounting Type: Through Hole
• Shrouding: Unshrouded
• Contact Shape: Square
• Material Flammability Rating: UL94 V-0

Compatible Substitute: The Molex 0022474073 satisfies all mandatory matching parameters. Both connectors are rectangular header connectors with identical pitch, position count, row configuration, and mounting methodology. Both feature unshrouded square contact geometry and equivalent flammability certification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Molex 0022474073

The Molex 0022474073 is the appropriate substitute for the obsolete TE Connectivity 644743-2. Both connectors share identical mating pitch, position count, row configuration, contact geometry, and mounting methodology. The Molex component is currently in active production status, ensuring long-term availability and supply chain continuity.

Compliance Considerations:

The TE Connectivity 644743-2 is RoHS non-compliant, while the Molex 0022474073 is ROHS3 compliant. This distinction is significant for applications subject to RoHS regulations. Both components carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

Physical Dimension Variations:

The substitute component exhibits minor dimensional differences in contact post length (0.135" versus 0.110") and overall contact length (0.560" versus 0.505"), resulting in increased insulation height (0.130" versus 0.100"). These variations require verification against printed circuit board layout specifications and mating connector cavity depths to ensure mechanical compatibility.

Contact Finish Specification:

The original component features tin-lead plating at 150.0µin thickness, while the substitute utilizes tin plating at 60.0µin thickness. The transition from tin-lead to tin-only finish reflects modern RoHS compliance requirements and does not compromise electrical performance for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0022474073 directly replace the TE Connectivity 644743-2 in existing designs?

A: The Molex 0022474073 is mechanically and electrically compatible based on matching pitch, position count, contact type, and mounting methodology. However, the increased post length and insulation height require verification against existing printed circuit board cavity specifications and mating connector designs to confirm direct substitution feasibility.

Q: What are the key differences between these two connectors?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), contact finish composition (tin-lead versus tin), and physical dimensions (post length and insulation height). The mating characteristics and electrical ratings remain functionally equivalent for general-purpose applications.

Q: Are there any compatibility concerns with the dimensional differences?

A: The Molex substitute exhibits a 0.025" (0.635mm) increase in post length and a 0.030" (0.762mm) increase in insulation height. These variations may affect compatibility with existing mating connectors or printed circuit board designs. Physical verification against specific application requirements is necessary.

Q: Does the change from tin-lead to tin plating affect performance?

A: The transition from tin-lead to tin-only plating reflects current RoHS compliance standards. For general-purpose applications, tin plating provides equivalent electrical performance and contact reliability. The reduced plating thickness (60.0µin versus 150.0µin) does not compromise functionality for standard connector applications.

Q: What is the inventory status for these components?

A: The TE Connectivity 644743-2 has 650 pieces in stock as new original inventory. The Molex 0022474073 has 947 pieces in stock as new original inventory in bulk packaging, providing alternative procurement options.

Q: Are both connectors suitable for automotive and medical applications?

A: The TE Connectivity 644743-2 is designated for general-purpose applications. The Molex 0022474073 is specified for automotive, general-purpose, medical, and telecommunications applications, indicating broader application qualification for the substitute component.