TE Connectivity 3-641656-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-641656-3 is a 3-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 AWG wire. This connector features tin-plated female socket contacts, a 0.100" pitch, and supports both discrete and ribbon cable applications with a locking ramp fastening mechanism.

The 3-641656-3 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this connector.

Substiute Parts

3-641656-3

TE Connectivity AMP ConnectorsIn Stock: 8583-641656-3 Datasheet

Current PartRFQ

3-640443-3

TE Connectivity AMP ConnectorsIn Stock: 22003-640443-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3-641656-3 are identified based on electrical and mechanical parameter equivalence within the MTA-100 rectangular connector family. The critical parameters determining substitution compatibility are:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Pitch: 3 positions at 0.100" (2.54mm) spacing
• Termination Method: IDC cable termination for 28 AWG wire
• Contact Material & Finish: Tin plating at 80.0µin thickness
• Mounting Configuration: Free hanging in-line and right angle orientation
• Fastening Mechanism: Locking ramp
• Compliance Standards: RoHS compliance and MSL rating

The substitute part 3-640443-3 maintains identical electrical and mechanical specifications across all these parameters, ensuring direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 3-640443-3 serves as the direct substitute for the obsolete 3-641656-3. Both connectors are manufactured by TE Connectivity within the MTA-100 series and maintain identical electrical and mechanical specifications.

Product Status Consideration: The 3-641656-3 is classified as obsolete, while the 3-640443-3 maintains active product status. This distinction ensures continued availability and manufacturing support for the substitute part.

Compliance & Certification: Both parts carry RoHS compliance certification and identical MSL ratings (1 - Unlimited), confirming suitability for equivalent applications without additional environmental or regulatory constraints.

Feature Differentiation: The primary distinction between these parts is the connector end configuration. The 3-641656-3 features a feed-through design, while the 3-640443-3 incorporates a closed-end design. This difference does not affect electrical or mechanical compatibility but may influence application-specific requirements based on circuit board layout and signal routing needs.

Inventory Availability: The 3-640443-3 maintains higher inventory levels (2100 pieces) compared to the 3-641656-3 (760 pieces), supporting improved supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Are the 3-641656-3 and 3-640443-3 electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including contact type, pitch, wire gauge compatibility, and contact finish. They function equivalently in IDC termination applications with 28 AWG wire.

Q: What is the difference between feed-through and closed-end connector designs?

A: The feed-through design (3-641656-3) allows signal pass-through capability, while the closed-end design (3-640443-3) terminates the signal path at the connector. Selection depends on circuit board layout and whether signal continuation beyond the connector is required.

Q: Can I use the 3-640443-3 as a direct replacement in existing designs using the 3-641656-3?

A: The 3-640443-3 provides direct mechanical and electrical compatibility. However, the closed-end versus feed-through feature difference requires verification that the application does not depend on the feed-through capability of the original part.

Q: Are there packaging differences between these parts?

A: The 3-641656-3 is supplied without specified packaging, while the 3-640443-3 is supplied in bulk packaging. This distinction affects procurement and handling procedures but does not impact connector performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 3-641656-3 and 3-640443-3 are RoHS compliant, carry MSL rating 1 (Unlimited), and share identical ECCN and HTSUS classifications.

Q: Why is the 3-641656-3 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 3-640443-3 represents the current active equivalent within the MTA-100 series, ensuring continued design support and manufacturing availability.