TE Connectivity AMP Connectors 644613-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644613-4 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features a 4-position configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable/wire connections in general purpose and industrial applications. The part is currently active in production with 616 pieces in stock. Alternative part numbers are available to accommodate different packaging requirements and contact finish specifications while maintaining electrical and mechanical compatibility.

Substiute Parts

644613-4

TE Connectivity AMP ConnectorsIn Stock: 679644613-4 Datasheet

Current PartRFQ

3-644613-4

TE Connectivity AMP ConnectorsIn Stock: 36553-644613-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the main part 644613-4 and the alternative part 3-644613-4 is based on strict electrical and mechanical parameter equivalence. Both parts share identical specifications across all critical dimensions and functional characteristics:

Key Parameters Determining Substitutability:

• Connector type, contact type, and position count (Header, Male Pin, 4 positions)
• Pitch spacing (0.156" / 3.96mm)
• Mounting configuration (Through Hole, Right Angle)
• Contact dimensions (Mating length 0.450", Post length 0.125")
• Insulation height (0.300")
• Voltage and temperature ratings (600VAC, -55°C ~ 105°C)
• Material composition (Copper Alloy contacts, Thermoplastic Glass Filled insulation)
• Compliance certifications (UL94 V-0, RoHS, REACH)

The primary differences between these parts are packaging format and contact finish composition, which do not affect electrical or mechanical compatibility in the application.

Parameter Comparison

Engineering Selection Recommendations

Both 644613-4 and 3-644613-4 are active production parts from TE Connectivity AMP Connectors and are fully interchangeable for electrical and mechanical applications. Selection between these parts should be based on the following factors:

Packaging and Availability: Part 3-644613-4 is supplied in bulk packaging with significantly higher inventory availability (3545 pieces versus 616 pieces). This part is suitable for high-volume production runs and applications requiring bulk component sourcing.

Contact Finish Specification: Part 644613-4 features Tin-Lead contact finish, while 3-644613-4 features Tin-only contact finish. Both finishes meet the same thickness specification (150.0µin / 3.81µm) and are suitable for solder termination applications. The Tin-only finish of 3-644613-4 aligns with ROHS3 compliance requirements.

Compliance Status: Both parts are RoHS compliant. Part 644613-4 carries RoHS Compliant status, while 3-644613-4 carries ROHS3 Compliant status. Part 3-644613-4 also specifies REACH compliance status, whereas 644613-4 lists REACH as unaffected. For applications requiring explicit REACH compliance documentation, 3-644613-4 is the appropriate selection.

Application Continuity: Both parts maintain identical electrical ratings (600VAC), temperature operating range (-55°C ~ 105°C), and flammability certification (UL94 V-0), ensuring direct substitution without circuit redesign or thermal management modifications.

Frequently Asked Questions (FAQ)

Q: Can 3-644613-4 be used as a direct replacement for 644613-4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same connector type, position count, pitch spacing, mounting configuration, voltage rating, temperature range, and contact dimensions. The parts differ only in packaging format and contact finish composition, neither of which affects functional compatibility.

Q: What is the difference between Tin-Lead and Tin contact finishes in these connectors?

A: Both finishes are applied at the same thickness (150.0µin / 3.81µm) and are suitable for solder termination. Tin-Lead finish is used in 644613-4, while Tin-only finish is used in 3-644613-4. The Tin-only finish aligns with ROHS3 compliance requirements. Both finishes provide equivalent electrical conductivity and corrosion resistance for the specified operating temperature range.

Q: Are there any compatibility issues when substituting between these part numbers?

A: No compatibility issues exist. Both parts are from the same MTA-156 series, feature identical shrouding (Shrouded - 1 Wall), and use the same friction lock fastening mechanism. Mating connectors and cable assemblies designed for 644613-4 will function identically with 3-644613-4.

Q: Which part should be selected for new designs?

A: For new designs, 3-644613-4 is the recommended selection due to higher inventory availability, ROHS3 compliance status, and explicit REACH compliance documentation. This part supports both high-volume production requirements and regulatory compliance documentation needs.

Q: What is the significance of the bulk packaging for 3-644613-4?

A: Bulk packaging indicates that 3-644613-4 is supplied without individual component packaging, suitable for automated assembly processes and high-volume manufacturing environments. This packaging format typically reduces per-unit cost and is standard for production quantities exceeding prototype or low-volume requirements.

Q: Are both parts suitable for industrial applications?

A: Yes. Both 644613-4 and 3-644613-4 are rated for general purpose and industrial applications. They maintain the same UL94 V-0 flammability rating, operating temperature range (-55°C ~ 105°C), and voltage rating (600VAC), making them suitable for industrial control systems, instrumentation, and general-purpose board-to-cable interconnections.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: Moisture Sensitivity Level 1 (Unlimited) indicates that these connectors have no moisture sensitivity restrictions. They do not require special handling, storage, or baking procedures prior to soldering. This classification applies to both 644613-4 and 3-644613-4.