TE Connectivity 3-644381-5 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-644381-5 is a 5-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 18 AWG discrete or ribbon cable. This connector features a tin contact finish, closed-end design, and polarizing key for secure mating.

The 3-644381-5 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and field service requirements for systems utilizing this connector type.

Substiute Parts

3-644381-5

TE Connectivity AMP ConnectorsIn Stock: 7073-644381-5 Datasheet

Current PartRFQ

3-643817-5

TE Connectivity AMP ConnectorsIn Stock: 26083-643817-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3-644381-5 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Receptacle)
• Contact type (Female Socket)
• Number of positions (5)
• Pitch (0.156" / 3.96mm)
• Wire gauge (18 AWG)
• Contact finish (Tin)

Mechanical Compatibility Parameters:

• Number of rows (1)
• Mounting type (Free Hanging In-Line)
• Cable termination method (IDC)
• Series designation (MTA-156)

Compliance Parameters:

• RoHS3 compliance status

Parts meeting all these criteria are classified as direct substitutes. The 3-643817-5 satisfies all electrical, mechanical, and compliance requirements for substitution.

Parameter Comparison

Engineering Selection Recommendations

The 3-643817-5 is a direct functional substitute for the obsolete 3-644381-5. Both parts are manufactured by TE Connectivity within the MTA-156 series and share identical electrical, mechanical, and compliance specifications.

Product Status Consideration: The 3-644381-5 is obsolete, while the 3-643817-5 maintains active product status. Selection of the active part ensures continued availability and manufacturer support.

Compliance Certification: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, confirming suitability for equivalent applications.

Physical Differentiation: The parts differ in connector body color (black versus orange) and packaging configuration (unspecified versus bulk). These differences do not affect electrical or mechanical performance in applications where the MTA-156 5-position receptacle connector is specified.

Frequently Asked Questions (FAQ)

Q: Can the 3-643817-5 be used as a direct replacement for the 3-644381-5 in existing designs?

A: Yes. The 3-643817-5 meets all electrical and mechanical specifications of the 3-644381-5. Both connectors are 5-position MTA-156 series receptacles with identical pitch, contact configuration, termination method, and wire gauge compatibility.

Q: What is the significance of the color difference between these parts?

A: The color difference (black versus orange) is a cosmetic distinction and does not affect connector function, electrical performance, or mechanical compatibility. Color coding may be used for internal manufacturing or inventory tracking purposes.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS3 compliance status, moisture sensitivity ratings, ECCN classification, and HTSUS codes. They are equivalent from a regulatory and certification standpoint.

Q: Why is the 3-644381-5 listed as obsolete?

A: Product obsolescence is determined by the manufacturer based on production lifecycle decisions. The 3-643817-5 represents the active equivalent within the same product series and specifications.

Q: Does packaging type affect the electrical or mechanical performance of the connector?

A: No. Packaging differences (bulk versus other configurations) relate to order quantity and handling only. The connector itself maintains identical performance characteristics regardless of packaging method.

Q: Are these connectors compatible with MTA-156 series plugs and other receptacles?

A: Compatibility is determined by adherence to MTA-156 series specifications. Both the 3-644381-5 and 3-643817-5 conform to these specifications and are compatible with standard MTA-156 series mating components.