940-SP-3088-2PC Equivalent & Substitute Parts

Part Overview

The 940-SP-3088-2PC is a modular connector plug manufactured by Stewart Connector, designed for 8-position 8-contact (8p8c/RJ45) Ethernet applications. This unshielded IDC connector operates at 1.5A and 150V, featuring a translucent polycarbonate housing with gold-plated phosphor bronze contacts. The product is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and support ongoing system requirements.

Substiute Parts

940-SP-3088-2PC

Stewart ConnectorIn Stock: 1113940-SP-3088-2PC Datasheet

Current PartRFQ

MPS588-C

Panduit CorpIn Stock: 2315MPS588-C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 940-SP-3088-2PC is determined by the following critical parameters:

• Connector Configuration: 8-position 8-contact (8p8c/RJ45) modular plug format
• Termination Technology: IDC (Insulation Displacement Contact) termination
• Cable Compatibility: Support for flat oval or round cable with solid or stranded wires
• Electrical Performance: Minimum 1.5A current rating and 150V voltage rating
• Contact System: Gold-plated phosphor bronze contacts
• Physical Dimensions: Connector length within acceptable tolerance range (22.48mm nominal)
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The MPS588-C from Panduit Corp meets these substitution criteria as an active product. While the MPS588-C introduces shielding (Cat5e rated) and operates at a lower contact finish thickness, these represent functional enhancements rather than incompatibilities. The connector maintains identical 8p8c configuration, IDC termination, cable type support, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MPS588-C is the designated manufacturer-recommended substitute for the 940-SP-3088-2PC. Both connectors maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The MPS588-C is an active product with established supply availability (2244 units in stock), addressing the obsolescence status of the original part.

The primary functional difference is the introduction of shielding and Cat5e rating in the MPS588-C. This represents a performance enhancement for Ethernet applications rather than a limitation. The connector maintains identical 8p8c configuration, IDC termination methodology, and cable type support. Physical dimensions are equivalent within standard manufacturing tolerances (22.48mm versus 22.55mm).

Selection of the MPS588-C is appropriate for applications requiring continued supply of 8p8c modular plug connectors with IDC termination and standard Ethernet cable compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MPS588-C directly replace the 940-SP-3088-2PC in existing assemblies?

A: Yes. Both connectors use identical 8p8c configuration and IDC termination. Physical dimensions are equivalent (22.48mm versus 22.55mm), and both support flat oval or round cable with solid or stranded wires. The MPS588-C's shielding and Cat5e rating provide enhanced performance without introducing incompatibility.

Q: What is the significance of shielding in the MPS588-C?

A: The MPS588-C incorporates shielding with brass shield material and Cat5e rating. This provides improved electromagnetic interference (EMI) rejection compared to the unshielded 940-SP-3088-2PC. For standard Ethernet applications, this represents a functional improvement.

Q: Are there differences in contact performance between these connectors?

A: Both connectors use phosphor bronze contacts with gold plating. The 940-SP-3088-2PC specifies 50.0µin (1.27µm) contact finish thickness, while the MPS588-C specifies 19.7µin (0.50µm). Both thicknesses provide adequate gold plating for reliable contact performance in standard applications.

Q: What is the wire gauge compatibility for the MPS588-C?

A: The MPS588-C is rated for 24-26 AWG wire gauge. This range is standard for 8p8c modular connectors and accommodates typical Ethernet cable specifications.

Q: Are both connectors RoHS compliant?

A: Yes. Both the 940-SP-3088-2PC and MPS588-C are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.