TE Connectivity AMP Connectors 644370-5 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644370-5 is a 5 Position Rectangular Receptacle Connector designed for IDC (Insulation Displacement Contact) termination with 20 AWG wire. This connector belongs to the MTA-156 series and features a tin-lead contact finish with a closed-end design. 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

644370-5

TE Connectivity AMP ConnectorsIn Stock: 906644370-5 Datasheet

Current PartRFQ

3-644370-5

TE Connectivity AMP ConnectorsIn Stock: 9173-644370-5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644370-5 is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility Parameters:

• Connector type (Receptacle)
• Number of positions (5)
• Pitch spacing (0.156" / 3.96mm)
• Number of rows (1)
• Mounting type (Free Hanging In-Line)
• Fastening type (Locking Ramp)
• Closed-end feature

Electrical Compatibility Parameters:

• Cable termination method (IDC)
• Wire type (Discrete or Ribbon Cable)
• Wire gauge (20 AWG)
• Contact type (Female Socket)
• Contact finish thickness (80.0µin / 2.03µm)

Environmental & Compliance Parameters:

• Moisture Sensitivity Level (MSL 1 - Unlimited)
• Color (Black)
• Base product number (644370)

The primary distinction between the main part and its substitute relates to contact finish composition (tin-lead versus tin) and product status (obsolete versus active). All other parameters remain identical, establishing direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 3-644370-5 serves as the direct active equivalent to the obsolete 644370-5. Selection of the substitute part is based on the following engineering criteria:

Product Status Consideration: The 644370-5 is classified as obsolete, while the 3-644370-5 maintains active product status with current manufacturing support and documented inventory availability.

Compliance Status: The 3-644370-5 achieves RoHS compliance, whereas the 644370-5 is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements or customer specifications mandating RoHS-compliant components.

Contact Finish Specification: The primary technical difference between the parts is the contact finish composition. The 644370-5 features a tin-lead finish, while the 3-644370-5 uses a tin finish. Both finishes maintain identical thickness specifications (80.0µin / 2.03µm) and are suitable for IDC termination with 20 AWG wire. The tin finish in the substitute part aligns with modern manufacturing standards and RoHS compliance requirements.

Functional Equivalence: All mechanical, electrical, and environmental parameters remain identical between the two parts. The 5-position MTA-156 series receptacle configuration, IDC termination method, 0.156" pitch spacing, and 20 AWG wire gauge specifications are preserved in the substitute part, ensuring direct compatibility with existing connector housings, mating plugs, and cable assemblies.

Frequently Asked Questions (FAQ)

Q: Can the 3-644370-5 be used as a direct replacement for the 644370-5 in existing designs?

A: Yes. The 3-644370-5 is mechanically and electrically equivalent to the 644370-5 across all critical parameters including connector type, position count, pitch spacing, IDC termination method, and wire gauge. The parts are interchangeable in applications where the contact finish material change from tin-lead to tin is acceptable.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: Both tin-lead and tin finishes provide equivalent electrical conductivity and contact reliability at the specified thickness of 80.0µin (2.03µm). The tin finish in the 3-644370-5 is the modern standard, offering improved environmental compliance and alignment with RoHS regulations. The finish change does not affect connector performance in IDC applications with 20 AWG wire.

Q: Why is the 644370-5 classified as obsolete?

A: The 644370-5 is obsolete due to its tin-lead contact finish, which does not meet current RoHS compliance requirements. The 3-644370-5 represents the active replacement that maintains all functional specifications while incorporating RoHS-compliant materials.

Q: Are there any compatibility concerns when substituting the 3-644370-5 for the 644370-5?

A: No compatibility concerns exist. Both parts are MTA-156 series receptacles with identical mechanical dimensions, pitch spacing (0.156"), mounting configuration, and IDC termination specifications. The parts will mate with the same plug connectors and accept the same 20 AWG cable types.

Q: What is the MSL rating for both parts, and what does it mean?

A: Both parts carry an MSL rating of 1 (Unlimited), indicating unlimited shelf life with no moisture sensitivity restrictions. These connectors do not require special moisture-controlled storage or handling procedures.

Q: Can the 3-644370-5 be used in applications requiring RoHS compliance?

A: Yes. The 3-644370-5 is RoHS compliant, making it suitable for applications and customers with RoHS regulatory requirements. The 644370-5, being RoHS non-compliant, cannot be used in such applications.

Q: Are both parts available in the same packaging configuration?

A: Packaging information is not specified in the provided technical data for either part. Contact the manufacturer or authorized distributor for current packaging options and availability.

Q: What wire types are compatible with both connectors?

A: Both the 644370-5 and 3-644370-5 accept discrete or ribbon cable with 20 AWG wire gauge. The IDC termination method accommodates both cable types without modification.