TE Connectivity AMP Connectors 3-644540-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-644540-4 is a 4-position rectangular receptacle connector designed for IDC (Insulation Displacement Contact) termination with 22 AWG wire. This connector is part of the MTA-100 series and features tin contact finish with feed-through capability. The connector is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector interface, allowing for direct functional replacement in applications where specific compliance or material requirements differ from the primary specification.

Substiute Parts

3-644540-4

TE Connectivity AMP ConnectorsIn Stock: 10063-644540-4 Datasheet

Current PartRFQ

640620-4

TE Connectivity AMP ConnectorsIn Stock: 1232640620-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3-644540-4 are identified based on strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain constant for valid substitution:

Critical Parameters (Must Match Exactly):

• Connector type: Receptacle
• Number of positions: 4
• Pitch: 0.100" (2.54mm)
• Contact type: Female Socket
• Wire gauge: 22 AWG
• Cable termination method: IDC
• Series designation: MTA-100
• Mounting configuration: Free Hanging (In-Line), Right Angle

Important Parameters (Must Match Exactly):

• Contact finish thickness: 80.0µin (2.03µm)
• Fastening type: Locking Ramp
• Number of rows: 1
• Wire type: Discrete or Ribbon Cable
• Features: Feed Through

Variable Parameters (May Differ):

• Contact finish material (Tin vs. Tin-Lead)
• RoHS compliance status
• Product color
• Packaging configuration

Parameter Comparison

Engineering Selection Recommendations

3-644540-4 (Primary Selection): The 3-644540-4 is the primary specification for new designs and applications requiring ROHS3 compliance. This part is currently active in production with full inventory availability (992 pcs). The tin contact finish meets modern environmental and regulatory requirements. Selection of this part is appropriate for all applications where RoHS compliance is mandatory or preferred.

640620-4 (Substitute Selection): The 640620-4 is functionally equivalent to the 3-644540-4 across all critical electrical and mechanical parameters. The primary difference is the contact finish material (Tin-Lead vs. Tin) and RoHS compliance status. This part is suitable for applications where RoHS compliance is not required and tin-lead contact finish is acceptable. The 640620-4 maintains full electrical and mechanical compatibility with the 3-644540-4 in terms of mating, termination, and performance characteristics. Higher inventory availability (1122 pcs) may support supply chain requirements in specific scenarios.

Compliance Considerations: Applications subject to RoHS3 regulations must use the 3-644540-4. Applications in legacy systems or non-regulated environments may utilize the 640620-4. Both parts share identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the 640620-4 be used as a direct replacement for the 3-644540-4 in new designs?

A: The 640620-4 is mechanically and electrically compatible with the 3-644540-4. However, the 640620-4 is RoHS non-compliant while the 3-644540-4 is ROHS3 compliant. New designs subject to RoHS regulations must use the 3-644540-4. For applications without RoHS requirements, the 640620-4 is functionally equivalent.

Q: What are the key differences between these two parts?

A: The primary differences are contact finish material and RoHS compliance status. The 3-644540-4 features tin contact finish and is ROHS3 compliant. The 640620-4 features tin-lead contact finish and is RoHS non-compliant. All other electrical and mechanical parameters are identical.

Q: Are the mating characteristics identical between these connectors?

A: Yes. Both connectors share identical pitch (0.100"), number of positions (4), contact type (female socket), and mounting configuration. They mate with the same plug connectors and accept the same IDC termination tooling for 22 AWG wire.

Q: Does the contact finish difference affect electrical performance?

A: Both tin and tin-lead finishes provide equivalent electrical performance at the contact interface. The choice between them is driven by regulatory compliance requirements and application environment rather than electrical characteristics.

Q: Can these connectors be intermixed in the same assembly?

A: Yes. Both connectors are mechanically and electrically compatible and can be used in the same assembly. However, compliance documentation should reflect the specific part numbers used to maintain regulatory traceability.

Q: What is the significance of the 80.0µin contact finish thickness specification?

A: The 80.0µin (2.03µm) thickness ensures consistent contact resistance and durability across the connector's operational life. Both substitute parts maintain this specification, confirming equivalent performance characteristics.

Q: Are there packaging differences between these parts?

A: The 3-644540-4 is specified as Bulk packaging. The 640620-4 packaging is not specified in the available data. Packaging configuration should be confirmed with the supplier for specific procurement requirements.

Q: What is the MSL rating and why is it important?

A: Both connectors carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations. These connectors can be stored and handled without special moisture control measures, simplifying inventory and assembly processes.