TE Connectivity AMP Connectors 647406-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 647406-1 is a rectangular connector socket contact designed for power applications. This component is classified as a socket contact with crimp termination, rated for 18-24 AWG wire gauges, and features a tin-lead contact finish. The part is currently listed as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and repair applications.

Substiute Parts

647406-1

TE Connectivity AMP ConnectorsIn Stock: 716647406-1 Datasheet

Current PartRFQ

3-647406-1

TE Connectivity AMP ConnectorsIn Stock: 630303-647406-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 647406-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: TE Connectivity AMP Connectors
• Series: SL-156
• Category: Rectangular Connectors
• Type: Power
• Pin or Socket: Socket
• Contact Termination: Crimp
• Wire Gauge: 18-24 AWG
• Contact Finish Thickness: 80.0µin (2.03µm)
• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN: EAR99
• HTSUS Code: 8536.90.4000

Allowable Variation:

• Contact Finish: Tin-Lead (original) to Tin (substitute) — both finishes are compatible within the SL-156 series specifications and maintain the same contact finish thickness.

The substitute part 3-647406-1 meets all mandatory parameters and represents an active, in-production equivalent with improved regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 3-647406-1 is the direct equivalent for the obsolete TE Connectivity 647406-1 socket contact. Selection of the substitute is based on the following engineering criteria:

Product Status: The main part 647406-1 is obsolete and no longer manufactured. The substitute 3-647406-1 is an active product in current production, ensuring long-term supply chain availability and design continuity.

Regulatory Compliance: The substitute part achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. For applications subject to RoHS directives, the substitute provides regulatory alignment. The substitute also carries a defined REACH Unaffected status, compared to the main part's Vendor Undefined status, providing greater regulatory clarity.

Functional Equivalence: Both parts maintain identical electrical and mechanical specifications across all critical parameters: wire gauge (18-24 AWG), contact termination method (crimp), contact finish thickness (80.0µin), and moisture sensitivity rating (MSL 1). The contact finish variation from tin-lead to tin is a compatible material change within the SL-156 series design envelope.

Inventory and Availability: The substitute part 3-647406-1 has significantly higher inventory availability (62,951 pieces) compared to the main part (703 pieces), supporting both immediate procurement and long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3-647406-1 substitute directly replace the 647406-1 in existing designs?

A: Yes. The 3-647406-1 is functionally and mechanically equivalent to the 647406-1 across all critical parameters: series designation, socket type, crimp termination, wire gauge rating (18-24 AWG), contact finish thickness, and moisture sensitivity level. Direct substitution is supported without design modification.

Q: What is the difference between the tin-lead finish on the 647406-1 and the tin finish on the 3-647406-1?

A: Both finishes maintain the same thickness specification (80.0µin / 2.03µm) and are compatible within the SL-156 series. The tin finish on the substitute part reflects modern manufacturing practices and supports improved RoHS compliance. Electrical and mechanical performance remain equivalent.

Q: Why is the 647406-1 listed as obsolete?

A: The 647406-1 has been discontinued by TE Connectivity AMP Connectors. The 3-647406-1 represents the active production equivalent and is the recommended part for all new designs and procurement.

Q: Does the improved RoHS compliance of the 3-647406-1 affect compatibility?

A: No. RoHS compliance is a manufacturing and material standard that does not alter the electrical or mechanical function of the contact. The substitute part maintains full compatibility with existing connector assemblies and applications.

Q: Are there packaging differences between the two parts?

A: The main part 647406-1 has undefined packaging specifications. The substitute part 3-647406-1 is supplied in Cut Tape (CT) packaging, which is standard for high-volume production and automated assembly processes.

Q: What is the REACH status difference, and does it matter for component selection?

A: The main part carries a Vendor Undefined REACH status, while the substitute is REACH Unaffected. This means the substitute part has been formally evaluated and determined to contain no substances of very high concern (SVHC) listed under REACH regulations. For applications in regulated markets, the substitute provides greater regulatory certainty.

Q: Can the 3-647406-1 be used in applications originally designed for the 647406-1?

A: Yes. The substitute part meets all functional and mechanical requirements of the original design. Wire gauge compatibility (18-24 AWG), crimp termination method, contact finish thickness, and moisture sensitivity rating are identical. The part is suitable for power connector applications within the SL-156 series.