Equivalent & Substitute Parts for TE Connectivity 5-555042-3 Modular Connector

Part Overview

The TE Connectivity AMP Connectors 5-555042-3 is a modular plug connector with 6 positions and 6 contacts (6p6c), compatible with RJ11, RJ12, RJ14, and RJ25 standards. This unshielded connector is designed for flat oval cable and solid wire applications with IDC (Insulation Displacement Contact) termination. The product is currently obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

5-555042-3

TE Connectivity AMP ConnectorsIn Stock: 6285-555042-3 Datasheet

Current PartRFQ

940-SP-3066

Stewart ConnectorIn Stock: 84691940-SP-3066 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 5-555042-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Plug
• Number of Positions/Contacts: 6p6c (RJ11, RJ12, RJ14, RJ25)
• Shielding: Unshielded
• Termination Method: IDC
• Housing Material: Polycarbonate (PC)
• Contact Material: Phosphor Bronze
• Contact Finish: Gold

Compatible Variation Parameters:

• Cable Type: Flat Oval Cable with Solid or Stranded Wires (stranded wires acceptable)
• Length: Within 0.005" (0.127mm) tolerance
• Wire Gauge: 26-28 AWG range

The Stewart Connector 940-SP-3066 meets all mandatory matching parameters and operates within acceptable tolerances for cable type and physical dimensions, establishing it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Stewart Connector 940-SP-3066 is the direct functional equivalent for the obsolete TE Connectivity 5-555042-3. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The TE Connectivity 5-555042-3 is obsolete, while the Stewart Connector 940-SP-3066 maintains active product status with 84,667 units in stock, ensuring long-term availability and supply chain continuity.

Compliance Enhancement: The Stewart Connector 940-SP-3066 carries ROHS3 compliance certification and REACH Unaffected status, providing superior regulatory alignment compared to the original part's undefined compliance status.

Electrical and Mechanical Equivalence: All critical electrical parameters (contact material, finish, and thickness) and mechanical parameters (connector type, position count, housing material, and termination method) are identical between the two parts.

Physical Compatibility: The 0.005" (0.127mm) difference in connector length falls within standard manufacturing tolerances and does not affect functional compatibility with standard RJ11, RJ12, RJ14, and RJ25 jack receptacles.

Cable Compatibility: The Stewart Connector 940-SP-3066 accepts both solid and stranded wires within the 26-28 AWG range, providing greater flexibility than the original part specification while maintaining full backward compatibility with solid wire applications.

Frequently Asked Questions (FAQ)

Q: Can the Stewart Connector 940-SP-3066 directly replace the TE Connectivity 5-555042-3 in existing installations?

A: Yes. Both connectors are 6p6c modular plugs with identical contact materials, finishes, and IDC termination methods. The 0.005" length difference is within standard tolerance and does not affect mating with RJ11, RJ12, RJ14, or RJ25 jack receptacles.

Q: What is the significance of the Stewart Connector 940-SP-3066 accepting both solid and stranded wires?

A: The original TE Connectivity part specifies solid wires only. The Stewart Connector's compatibility with both solid and stranded wires provides greater application flexibility without compromising performance in solid wire applications. Wire gauge remains within the 26-28 AWG specification range.

Q: Does the ROHS3 compliance of the Stewart Connector 940-SP-3066 affect compatibility?

A: No. ROHS3 compliance indicates enhanced environmental and regulatory adherence. The Stewart Connector meets or exceeds all electrical and mechanical specifications of the original part while providing superior compliance documentation.

Q: Are there any electrical performance differences between these two connectors?

A: No electrical performance differences exist. Both connectors use phosphor bronze contacts with identical 50.0µin (1.27µm) gold plating. The Stewart Connector provides additional electrical ratings (1.5 A at 150V), which exceed typical modular connector applications.

Q: What is the packaging difference between these parts?

A: The TE Connectivity 5-555042-3 packaging is not specified in available documentation. The Stewart Connector 940-SP-3066 is supplied in bulk packaging, suitable for high-volume assembly operations and component procurement workflows.

Q: Can the Stewart Connector 940-SP-3066 be used in applications originally designed for the TE Connectivity 5-555042-3?

A: Yes. Functional equivalence across all critical parameters (connector type, position count, contact material, finish, termination method, and housing material) establishes direct substitutability for all applications within the original part's design envelope.