TE Connectivity AMP Connectors 644387-9 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644387-9 is a 9 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-lead contact finish with a 0.156" (3.96mm) pitch. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for new production and field service applications.

Substiute Parts

644387-9

TE Connectivity AMP ConnectorsIn Stock: 1072644387-9 Datasheet

Current PartRFQ

3-644387-9

TE Connectivity AMP ConnectorsIn Stock: 11623-644387-9 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 644387-9 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for connector type, position count, pitch, row configuration, contact type, cable termination method, wire gauge, mounting type, fastening mechanism, series designation, contact finish thickness, features, color, and moisture sensitivity level.

The primary distinction between the main part and its substitute relates to product status and contact finish material composition. The obsolete 644387-9 utilizes a tin-lead contact finish, while the active substitute employs a tin contact finish. Both finishes maintain the same thickness specification of 80.0µin (2.03µm), ensuring electrical and mechanical compatibility. The substitute part achieves RoHS compliance through the elimination of lead content, whereas the original part is RoHS non-compliant.

All other parameters remain identical, confirming direct functional and physical interchangeability within the MTA-156 series framework.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 3-644387-9 serves as the direct active equivalent for the obsolete 644387-9. This substitution is supported by complete parameter alignment across all electrical and mechanical specifications within the MTA-156 series.

The substitute part 3-644387-9 is classified as active product status, ensuring ongoing availability and manufacturing support. This part achieves RoHS compliance through tin contact finish composition, eliminating lead content while maintaining identical contact finish thickness and all other functional parameters.

For applications subject to RoHS regulatory requirements or environmental compliance mandates, the 3-644387-9 is the appropriate selection. For legacy systems or applications without RoHS constraints, the 3-644387-9 remains functionally equivalent and interchangeable due to identical electrical and mechanical characteristics.

The contact finish material change from tin-lead to tin does not affect connector performance, mating cycles, or electrical conductivity within the specified 18 AWG wire gauge application range.

Frequently Asked Questions (FAQ)

Q: Can the 3-644387-9 directly replace the 644387-9 in existing designs?

A: Yes. The 3-644387-9 maintains identical specifications for connector type, position count, pitch, contact type, cable termination method, wire gauge, mounting configuration, and fastening mechanism. Physical and electrical interchangeability is confirmed across all critical parameters.

Q: What is the primary difference between these two parts?

A: The main difference is product status and contact finish material. The 644387-9 is obsolete with tin-lead contact finish and RoHS non-compliant status. The 3-644387-9 is active with tin contact finish and RoHS compliant status. Both maintain identical contact finish thickness of 80.0µin (2.03µm).

Q: Are there compatibility concerns with the contact finish change from tin-lead to tin?

A: No. Both contact finishes maintain the same thickness specification and provide equivalent electrical conductivity and mating performance for 18 AWG discrete or ribbon cable applications within the MTA-156 series.

Q: Does the RoHS compliance status affect electrical performance?

A: No. RoHS compliance is achieved through material composition changes that do not alter electrical characteristics, contact resistance, or connector functionality.

Q: What is the significance of the 0.156" (3.96mm) pitch specification?

A: The pitch specification defines the center-to-center distance between adjacent contact positions. This parameter must remain constant for mechanical and electrical compatibility. Both parts maintain identical 0.156" (3.96mm) pitch within the single-row, 9-position configuration.

Q: Can these connectors accommodate both discrete and ribbon cable?

A: Yes. Both the 644387-9 and 3-644387-9 support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method at 18 AWG wire gauge.

Q: What does the Locking Ramp fastening type provide?

A: The Locking Ramp fastening mechanism secures the connector to the mating plug through a ramp-based locking feature, ensuring stable mechanical retention during operation and field service.

Q: Is the polarizing key feature present on both parts?

A: Yes. Both the 644387-9 and 3-644387-9 include polarizing key features to prevent incorrect mating orientation and ensure proper connector alignment.