TE Connectivity 555979-1 Modular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 555979-1 is a modular jack connector designed for telecommunications and data applications. This component is a 6-position 4-conductor (6p4c) right-angle unshielded connector compatible with RJ11 and RJ14 standards, featuring Category 3 performance ratings. The part is currently classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

555979-1

TE Connectivity AMP ConnectorsIn Stock: 1194555979-1 Datasheet

Current PartRFQ

5555979-1

TE Connectivity AMP ConnectorsIn Stock: 34655555979-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 555979-1 is determined by strict equivalence across all electrical and mechanical parameters. The primary substitute identified is the TE Connectivity 5555979-1, which maintains identical specifications across the following critical parameters:

Electrical Compatibility Parameters:

• Connector type (Jack)
• Position/conductor configuration (6p4c RJ11/RJ14)
• Performance rating (Cat3)
• Contact material and finish specifications
• Termination method (Solder)
• Shielding classification (Unshielded)

Mechanical Compatibility Parameters:

• Orientation (90° right angle)
• Mounting type (Through Hole)
• Housing material (PBT/Polyester)
• Tab direction (Down)
• Board lock feature presence
• Operating temperature range (-40°C to 85°C)

The substitute part differs only in packaging format (Tray versus unspecified original packaging) and product status (Active versus Obsolete), with the substitute offering improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 5555979-1 is the direct equivalent substitute for the obsolete 555979-1 modular connector. Selection of the substitute part is supported by the following engineering factors:

Functional Equivalence: All electrical and mechanical parameters are identical, ensuring direct pin-for-pin and form-factor compatibility with existing PCB designs and mating components.

Product Status: The substitute part maintains active production status, eliminating supply chain discontinuity associated with the obsolete original part.

Regulatory Compliance: The substitute part achieves ROHS3 compliance and REACH unaffected status, compared to the non-compliant and REACH-affected status of the original part. This provides improved alignment with current environmental and regulatory requirements for new designs and manufacturing.

Inventory Availability: The substitute part demonstrates higher inventory levels (3393 pieces) compared to the original part (1165 pieces), supporting both immediate procurement and long-term supply security.

Packaging Consideration: The substitute part is supplied in Tray packaging, which is standard for high-volume production environments and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 5555979-1 be used as a direct replacement for the 555979-1 in existing designs?

A: Yes. The 5555979-1 maintains identical electrical and mechanical specifications across all critical parameters including connector type, position configuration, orientation, mounting method, termination type, shielding, performance rating, contact materials and finishes, housing material, and operating temperature range. Direct substitution is supported without design modification.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Active versus Obsolete), regulatory compliance certifications (ROHS3 Compliant and REACH Unaffected versus Non-compliant and REACH Affected), and packaging format (Tray versus unspecified). All functional and mechanical specifications are identical.

Q: Are there any compatibility concerns with PCB layouts or mating connectors?

A: No. Both parts share identical through-hole mounting specifications, orientation (90° right angle), tab direction (down), and board lock features. Existing PCB layouts and mating plug connectors require no modification.

Q: Why is the original part classified as obsolete?

A: The 555979-1 is listed as obsolete in the manufacturer's product portfolio. The 5555979-1 represents the current active equivalent, ensuring continued availability and support for this connector type.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The 5555979-1 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The original 555979-1 is non-compliant and REACH affected.

Q: Is the tray packaging suitable for automated assembly?

A: Yes. Tray packaging is standard for automated pick-and-place assembly processes and high-volume production environments.

Q: Are the contact specifications identical between both parts?

A: Yes. Both parts feature phosphor bronze contacts with gold finish at 50.0µin (1.27µm) thickness, ensuring identical electrical performance and reliability characteristics.