TE Connectivity AMP Connectors 644387-5 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644387-5 is a 5 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 0.156" (3.96mm) pitch with tin-lead contact finish. The part is classified as obsolete, necessitating identification of active equivalent alternatives to support ongoing procurement and system maintenance requirements.

Substiute Parts

644387-5

TE Connectivity AMP ConnectorsIn Stock: 800644387-5 Datasheet

Current PartRFQ

3-644387-5

TE Connectivity AMP ConnectorsIn Stock: 11623-644387-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644387-5 is determined by strict equivalence across the following critical parameters:

• Series Compatibility: Both parts must belong to the MTA-156 series to ensure mechanical and electrical interchangeability
• Connector Configuration: Receptacle type with 5 positions at 0.156" (3.96mm) pitch
• Termination Method: IDC cable termination for 18 AWG wire
• Contact Type: Female socket contacts with identical finish thickness (80.0µin / 2.03µm)
• Mechanical Features: Free hanging in-line mounting with locking ramp fastening, feed through and polarizing key features
• Environmental Rating: Moisture Sensitivity Level 1 (Unlimited)

The primary distinction between the main part and its substitute relates to contact finish material (tin-lead versus tin) and product status (obsolete versus active). These differences do not affect electrical or mechanical compatibility within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 3-644387-5 serves as the direct active equivalent to the obsolete 644387-5. Selection of the substitute part is based on the following engineering criteria:

Product Status: The 644387-5 is classified as obsolete, while the 3-644387-5 maintains active product status with confirmed inventory availability (1075 pieces in stock versus 768 pieces for the obsolete part).

Regulatory Compliance: The substitute part 3-644387-5 is RoHS Compliant, whereas the main part is RoHS non-compliant. This distinction is significant for applications subject to RoHS directives and environmental regulations.

Contact Finish Material: The main part features tin-lead contact finish, while the substitute uses tin finish. Both maintain identical contact finish thickness (80.0µin / 2.03µm), ensuring equivalent electrical performance and contact resistance characteristics.

Electrical and Mechanical Equivalence: All critical parameters determining connector functionality remain identical between the two parts, including pitch, number of positions, termination method, wire gauge compatibility, and mechanical mounting features.

For new designs and ongoing procurement, the 3-644387-5 is the appropriate selection. For legacy system maintenance requiring exact tin-lead finish specifications, compatibility assessment with the substitute tin finish must be conducted within the context of specific application requirements.

Frequently Asked Questions (FAQ)

Q: Are the 644387-5 and 3-644387-5 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including 5-position configuration, 0.156" (3.96mm) pitch, free hanging in-line mounting, locking ramp fastening, and polarizing key features. They are fully mechanically interchangeable within MTA-156 series applications.

Q: What is the difference between tin-lead and tin contact finishes in this connector series?

A: The main part (644387-5) uses tin-lead contact finish, while the substitute (3-644387-5) uses tin finish. Both maintain the same contact finish thickness of 80.0µin (2.03µm). The contact finish material does not affect the IDC termination mechanism or electrical performance for standard 18 AWG wire applications.

Q: Why is the 644387-5 classified as obsolete?

A: The 644387-5 is an obsolete product, meaning TE Connectivity has discontinued active production and support. The 3-644387-5 represents the active equivalent replacement within the MTA-156 series.

Q: Does the RoHS compliance difference affect connector performance?

A: RoHS compliance status reflects regulatory and environmental standards compliance rather than electrical or mechanical performance. The RoHS Compliant 3-644387-5 is suitable for applications subject to RoHS directives. The non-compliant 644387-5 may be restricted in certain regulated markets and applications.

Q: Can both connectors terminate 18 AWG wire using IDC termination?

A: Yes. Both the 644387-5 and 3-644387-5 are specified for IDC termination with 18 AWG discrete or ribbon cable. The termination method and wire gauge compatibility are identical.

Q: What is the inventory status for these parts?

A: The obsolete 644387-5 has 768 pieces in stock. The active substitute 3-644387-5 has 1075 pieces in stock, providing greater availability for ongoing procurement requirements.

Q: Are there any electrical performance differences between these connectors?

A: No. Both connectors maintain identical electrical specifications including contact finish thickness, pitch, number of positions, and wire gauge compatibility. Electrical performance is equivalent.

Q: Which part should be specified for new designs?

A: The 3-644387-5 should be specified for new designs due to its active product status, RoHS compliance, and confirmed availability. The 644387-5 is suitable only for legacy system maintenance where exact tin-lead finish specifications are required.