TE Connectivity AMP Connectors 644743-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644743-1 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, supporting board-to-cable and board-to-board interconnections. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing procurement and design requirements. Substitute parts must maintain electrical and mechanical compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

644743-1

TE Connectivity AMP ConnectorsIn Stock: 1120644743-1 Datasheet

Current PartRFQ

0022474073

MolexIn Stock: 10390022474073 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644743-1 is based on the following critical parameters that must align between the main part and substitute components:

Primary Matching Criteria:

• Connector type classification (Header)
• Contact type (Male Pin)
• Mating pitch specification (0.100" / 2.54mm)
• Position count (7 positions)
• Row configuration (1 row)
• Mounting methodology (Through Hole)
• Shrouding configuration (Unshrouded)
• Contact geometry (Square shape)
• Flammability compliance (UL94 V-0)
• Moisture sensitivity rating (MSL 1)

The Molex 0022474073 satisfies all primary matching criteria, establishing it as a functional equivalent for the obsolete TE Connectivity part. Both components support identical mating pitch, position count, and mounting architecture, enabling direct substitution in applications requiring 7-position 2.54mm pitch header connectors.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Molex 0022474073

The Molex 0022474073 is the recommended substitute for the obsolete TE Connectivity 644743-1. This component maintains full electrical and mechanical compatibility across all critical parameters including mating pitch, position count, contact geometry, and mounting configuration.

Compliance Advantages:

The Molex substitute offers improved regulatory compliance status. While the original TE Connectivity part is RoHS non-compliant, the Molex 0022474073 achieves ROHS3 compliance, aligning with current environmental and procurement standards. Both components carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications, ensuring consistent export and tariff treatment.

Operational Compatibility:

Both components operate within the same temperature range and moisture sensitivity specifications. The UL94 V-0 flammability rating is maintained across both parts, supporting applications requiring equivalent fire safety performance. The mating contact length specification (0.295" / 7.49mm) is identical, ensuring proper mating depth and electrical contact reliability.

Design Considerations:

Minor variations exist in contact post length (0.110" for TE Connectivity versus 0.135" for Molex) and insulation height (0.100" versus 0.130"), reflecting different manufacturing approaches within the same connector family. These dimensional differences do not affect functional compatibility in standard through-hole PCB applications. The Molex component utilizes polyamide nylon insulation versus thermoplastic in the original part, both meeting UL94 V-0 requirements.

Procurement Status:

The Molex 0022474073 maintains active product status with current inventory availability, eliminating supply chain constraints associated with the obsolete TE Connectivity part.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0022474073 directly replace the TE Connectivity 644743-1 in existing designs?

A: Yes. Both components share identical mating pitch (0.100" / 2.54mm), position count (7), contact type (male pin), and mounting methodology (through-hole). The connector footprint and mating interface are compatible, enabling direct substitution without PCB redesign.

Q: What are the differences in contact finish between these parts?

A: The TE Connectivity 644743-1 uses tin-lead contact finish, while the Molex 0022474073 uses tin finish. Both finishes provide equivalent electrical conductivity and corrosion resistance for general-purpose applications. The tin finish in the Molex part aligns with RoHS3 compliance requirements.

Q: Are there dimensional differences that affect PCB layout?

A: The mating contact length is identical (0.295" / 7.49mm) for both parts. Minor differences exist in post length and insulation height, but these do not impact standard through-hole PCB mounting patterns. Existing PCB designs require no modification.

Q: Does the Molex substitute support the same voltage and current ratings?

A: The TE Connectivity 644743-1 specifies 250VAC voltage rating. The Molex 0022474073 does not provide explicit voltage or current ratings in available documentation. For applications requiring specific voltage or current verification, consult Molex technical specifications or contact the manufacturer directly.

Q: What is the significance of the RoHS compliance difference?

A: The TE Connectivity part is RoHS non-compliant, while the Molex substitute is ROHS3 compliant. For new designs and procurement in regulated markets, the Molex component meets current environmental standards. Existing legacy systems using the TE Connectivity part remain functional; substitution is recommended for new production.

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

A: The Molex 0022474073 is specified for automotive, general purpose, medical, and telecommunications applications. The TE Connectivity 644743-1 is specified for general purpose applications. The Molex component supports a broader application range, making it suitable for specialized environments.

Q: What is the packaging difference between these parts?

A: The TE Connectivity 644743-1 packaging is not specified in available data. The Molex 0022474073 is supplied in bulk packaging. Confirm packaging requirements with your procurement department for inventory and handling specifications.

Q: Can these connectors be used interchangeably with mating connectors from different manufacturers?

A: Both components are unshrouded headers with standard 0.100" (2.54mm) pitch, compatible with industry-standard 2.54mm pitch receptacles and mating connectors. Compatibility depends on the mating connector specification, not the header manufacturer.