TE Connectivity AMP Connectors 5-557961-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 5-557961-3 is an unshielded modular plug connector with 8 positions and 8 contacts (8p8c/RJ45 Ethernet configuration). This connector is designed for round cable applications with stranded wires and utilizes IDC (Insulation Displacement Contact) termination technology. The product is currently active and maintains an inventory of 656 pieces in new original condition. Substitute parts are identified when original stock becomes unavailable, when bulk packaging requirements differ, or when equivalent electrical and mechanical specifications are required for system integration.

Substiute Parts

5-557961-3

TE Connectivity AMP ConnectorsIn Stock: 6975-557961-3 Datasheet

Current PartRFQ

940-SP-3088R-A133

Stewart ConnectorIn Stock: 91743940-SP-3088R-A133 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity AMP Connectors 5-557961-3 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Plug configuration
• Number of Positions/Contacts: 8p8c (RJ45, Ethernet) standard
• Shielding Classification: Unshielded
• Termination Technology: IDC (Insulation Displacement Contact)
• Housing Material: Polycarbonate (PC)
• Contact Material: Phosphor Bronze
• Contact Finish: Gold plating
• Contact Finish Thickness: 50.0µin (1.27µm)

Compatible Variation Parameters:

• Cable Type: Round cable with solid or stranded wires (stranded wires specified for main part; substitute accepts both solid and stranded)
• Length Tolerance: Mechanical length within 0.010" (0.25mm) variation acceptable for connector body fit
• Color: Translucent - Clear (consistent across all qualified substitutes)
• Moisture Sensitivity Level: MSL 1 (Unlimited) maintained

The substitute part 940-SP-3088R-A133 from Stewart Connector meets all mandatory matching parameters and maintains compatibility with the electrical and mechanical specifications of the primary part.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The TE Connectivity AMP Connectors 5-557961-3 is recommended for applications requiring Cat5 Ethernet connectivity with unshielded 8p8c modular plug configuration. This part maintains active product status and full RoHS compliance. The part is suitable for standard Ethernet cabling applications with stranded wire configurations in the 26-28 AWG range.

Substitute Part Selection: The Stewart Connector 940-SP-3088R-A133 is a qualified equivalent for the TE Connectivity 5-557961-3. This substitute maintains all critical electrical and mechanical parameters including connector type, contact configuration, termination method, and material specifications. The Stewart Connector part provides additional electrical ratings (1.5 A current rating and 150V voltage rating) and ROHS3 compliance certification. The substitute is available in bulk packaging and maintains equivalent performance characteristics for modular connector applications.

Compliance Considerations: Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification and are suitable for standard environmental storage and handling conditions. The substitute part carries ROHS3 compliance, which supersedes the RoHS compliance of the primary part, ensuring compatibility with current regulatory requirements. Both parts are classified under ECCN EAR99 and HTSUS 8536.69.8000.

Frequently Asked Questions (FAQ)

Q: Can the Stewart Connector 940-SP-3088R-A133 be used as a direct replacement for the TE Connectivity 5-557961-3?

A: Yes. The Stewart Connector 940-SP-3088R-A133 meets all mandatory electrical and mechanical specifications for the TE Connectivity 5-557961-3. Both connectors feature identical 8p8c (RJ45, Ethernet) contact configurations, unshielded design, IDC termination, phosphor bronze contacts with 50.0µin gold plating, and polycarbonate housing. The substitute part is functionally equivalent for modular connector applications.

Q: What is the significance of the length difference between the two parts?

A: The TE Connectivity 5-557961-3 measures 0.895" (22.73mm) while the Stewart Connector 940-SP-3088R-A133 measures 0.885" (22.48mm). This 0.010" (0.25mm) difference is within acceptable mechanical tolerance for connector body fit and does not affect electrical performance or compatibility with standard RJ45 jack receptacles.

Q: Does the cable type compatibility difference affect substitution?

A: No. The TE Connectivity part specifies round cable with stranded wires, while the Stewart Connector substitute accepts both solid and stranded wires. This represents an expanded compatibility range. The substitute part is fully compatible with stranded wire applications specified for the primary part.

Q: What are the electrical ratings for these connectors?

A: The Stewart Connector 940-SP-3088R-A133 provides specified electrical ratings of 1.5 A current capacity and 150V voltage rating. The TE Connectivity 5-557961-3 does not include published voltage or current ratings in the provided specifications. Both parts are suitable for standard Ethernet applications operating within typical network voltage and current parameters.

Q: Are both parts RoHS compliant?

A: Yes. The TE Connectivity 5-557961-3 is RoHS Compliant. The Stewart Connector 940-SP-3088R-A133 is ROHS3 Compliant, which represents the current regulatory standard. Both parts meet environmental compliance requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these connectors?

A: Both the TE Connectivity 5-557961-3 and Stewart Connector 940-SP-3088R-A133 are classified as MSL 1 (Unlimited). This classification indicates that these connectors have unlimited shelf life under standard storage conditions and do not require special moisture control measures during handling or storage.

Q: Can these connectors be used with both Cat5 and standard Ethernet applications?

A: The TE Connectivity 5-557961-3 is rated for Cat5 Ethernet applications. The Stewart Connector 940-SP-3088R-A133 does not specify a category rating but maintains the same 8p8c (RJ45, Ethernet) connector configuration and IDC termination technology. Both parts are suitable for standard Ethernet modular connector applications.

Q: What packaging options are available?

A: The TE Connectivity 5-557961-3 is available with 656 pieces in new original stock. The Stewart Connector 940-SP-3088R-A133 is available in bulk packaging with 91,666 pieces in new original stock. Packaging selection depends on application volume requirements and inventory management considerations.