940-SP-3046-OB Equivalent & Substitute Parts

Part Overview

The 940-SP-3046-OB is a shielded modular plug connector with 6 positions and 4 contacts (6p4c), conforming to RJ11/RJ14 standards. This connector features IDC (Insulation Displacement Contact) termination for flat oval cable applications and is manufactured by Stewart Connector. The product is currently obsolete, necessitating identification of active equivalent components to maintain system compatibility and ensure continued availability for replacement and new installations.

Substiute Parts

940-SP-3046-OB

Stewart ConnectorIn Stock: 746940-SP-3046-OB Datasheet

Current PartRFQ

940-SP-3046

Stewart ConnectorIn Stock: 31147940-SP-3046 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 940-SP-3046-OB is determined by the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Plug
• Number of Positions/Contacts: 6p4c (RJ11, RJ14)
• Termination Method: IDC
• Cable Type: Flat Oval Cable, Solid or Stranded Wires
• Length: 0.525" (13.34mm)
• Contact Finish: Gold
• Contact Finish Thickness: 50.0µin (1.27µm)

Allowable Variations:

• Shielding: The original part is shielded; unshielded variants are acceptable substitutes where electromagnetic interference protection is not required
• Contact Material: Copper Alloy or Phosphor Bronze are functionally equivalent
• Housing Material: Thermoplastic or Polycarbonate (PC) are acceptable alternatives
• Product Status: Active products are preferred over obsolete components

The substitute part 940-SP-3046 maintains all mandatory parameters while offering improved availability through active product status.

Parameter Comparison

Engineering Selection Recommendations

The 940-SP-3046 is the direct active equivalent for the obsolete 940-SP-3046-OB. Both components are manufactured by Stewart Connector and maintain identical mechanical and electrical interface specifications for 6p4c modular plug connectors with IDC termination.

Primary Advantage: The substitute part 940-SP-3046 carries active product status with 31,108 units in stock, compared to the obsolete original with limited remaining inventory of 679 units. This ensures long-term availability and supply chain continuity.

Compliance Consideration: The substitute part meets ROHS3 compliance requirements, providing regulatory alignment for new designs and replacements in regulated applications.

Shielding Difference: The substitute is unshielded, whereas the original is shielded. In applications where electromagnetic interference mitigation is critical, the shielding difference must be evaluated against system requirements. For standard telecommunications and data applications without EMI sensitivity, the unshielded variant is functionally equivalent.

Material Variation: The contact material change from Copper Alloy to Phosphor Bronze does not affect electrical performance or compatibility, as both materials provide equivalent conductivity and durability for IDC termination applications.

Frequently Asked Questions (FAQ)

Q: Can the 940-SP-3046 directly replace the 940-SP-3046-OB in existing installations?

A: Yes. Both connectors maintain identical mechanical dimensions, contact pitch, and IDC termination compatibility. The primary difference is shielding; applications not requiring electromagnetic shielding will experience no functional difference.

Q: What is the significance of the shielding difference between these parts?

A: The original 940-SP-3046-OB includes a copper alloy shield for electromagnetic interference protection. The substitute 940-SP-3046 is unshielded. In standard telecommunications applications (voice, low-speed data), shielding is not required. In environments with high electromagnetic noise or where signal integrity is critical, the shielding difference must be evaluated.

Q: Are the contact materials interchangeable?

A: Yes. Phosphor Bronze (substitute) and Copper Alloy (original) both provide suitable electrical conductivity and mechanical durability for IDC contact applications. No performance degradation occurs with this material substitution.

Q: What does the housing material change from Thermoplastic to Polycarbonate mean for durability?

A: Polycarbonate (PC) offers superior impact resistance and temperature stability compared to standard thermoplastic. This represents an improvement in mechanical robustness and environmental tolerance.

Q: Is the 940-SP-3046 RoHS compliant?

A: Yes. The substitute part 940-SP-3046 is ROHS3 compliant, meeting current regulatory requirements for restricted substances in electrical and electronic equipment.

Q: What is the current and voltage rating for the 940-SP-3046?

A: The substitute part is rated for 1.5 A at 150V, suitable for standard telecommunications and low-voltage data applications.

Q: Why is the original part obsolete?

A: Product obsolescence typically results from manufacturer discontinuation decisions based on market demand, technology evolution, or product line consolidation. The active substitute 940-SP-3046 provides equivalent functionality with improved availability.