TE Connectivity 3-644381-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-644381-3 is a 3 Position Rectangular Receptacle Connector designed for IDC (Insulation Displacement Contact) termination with 18 AWG wire. This connector belongs to the MTA-156 series and features a tin contact finish with closed end and polarizing key design. The part is currently classified as obsolete, necessitating identification of equivalent substitute components for ongoing applications and new designs requiring this connector type.

Substiute Parts

3-644381-3

TE Connectivity AMP ConnectorsIn Stock: 7343-644381-3 Datasheet

Current PartRFQ

3-643817-3

TE Connectivity AMP ConnectorsIn Stock: 58643-643817-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 3-644381-3 are identified based on strict electrical and mechanical parameter matching within the MTA-156 rectangular connector series. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Connector Type: Receptacle
• Contact Type: Female Socket
• Number of Positions: 3
• Pitch: 0.156" (3.96mm)
• Number of Rows: 1
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Locking Ramp
• Cable Termination: IDC
• Wire Gauge: 18 AWG
• Contact Finish: Tin
• Features: Closed End, Polarizing Key

The substitute part 3-643817-3 meets all critical electrical and mechanical parameters, ensuring functional compatibility with applications designed for the original 3-644381-3 connector.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 3-643817-3 is the appropriate selection for applications currently using or requiring the TE Connectivity 3-644381-3 connector. The substitute part maintains identical electrical and mechanical specifications across all critical parameters including connector type, contact configuration, pitch, termination method, and wire gauge compatibility.

Status Consideration: The original part 3-644381-3 is classified as obsolete, while the substitute part 3-643817-3 is active in production. Selection of the active substitute part ensures continued availability and supply chain reliability for new designs and replacement applications.

Compliance Status: Both parts maintain equivalent RoHS compliance and REACH status, with identical moisture sensitivity levels and export classifications. The substitute part is RoHS Compliant and REACH Unaffected, supporting regulatory requirements for current manufacturing standards.

Availability: The substitute part 3-643817-3 is available in significantly higher inventory quantities (5800 Pcs) compared to the original part, supporting production requirements and lead time considerations.

Frequently Asked Questions (FAQ)

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

A: Yes. The 3-643817-3 meets all critical electrical and mechanical parameters of the 3-644381-3, including connector type, contact configuration, pitch, mounting type, fastening type, cable termination method, and wire gauge. Both connectors are MTA-156 series receptacles with identical IDC termination specifications for 18 AWG wire.

Q: What is the difference between these two parts?

A: The primary differences are product status and color. The 3-644381-3 is obsolete with black housing, while the 3-643817-3 is active in production with orange housing. Both parts share identical electrical specifications, contact finish, and compliance certifications.

Q: Are there any compatibility concerns when substituting the 3-643817-3 for the 3-644381-3?

A: No compatibility concerns exist from an electrical or mechanical standpoint. Both connectors feature the same pitch, number of positions, contact type, and termination method. The housing color difference does not affect functional compatibility.

Q: Does the substitute part meet the same regulatory requirements?

A: Yes. Both parts maintain RoHS compliance and equivalent moisture sensitivity levels (MSL 1). The substitute part is RoHS Compliant and REACH Unaffected, meeting current regulatory standards for electronic components.

Q: What packaging is available for the substitute part?

A: The substitute part 3-643817-3 is available in bulk packaging, with 5800 pieces in current inventory stock.