Stewart Connector 937-SP-3066-OST Modular Connector Equivalent & Substitute Parts

Part Overview

The Stewart Connector 937-SP-3066-OST is a modular plug connector with 6 positions and 6 contacts (6p6c), designed for RJ11, RJ12, RJ14, and RJ25 applications. This unshielded IDC connector features an offset latch and accommodates flat oval cable with stranded wires. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure design compatibility in new procurement cycles.

Substiute Parts

937-SP-3066-OST

Stewart ConnectorIn Stock: 1131937-SP-3066-OST Datasheet

Current PartRFQ

940-SP-3066-OST

Stewart ConnectorIn Stock: 5052940-SP-3066-OST Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 940-SP-3066-OST is classified as a direct equivalent based on the following critical parameters that determine functional interchangeability:

• Connector type, position count, and contact configuration (6p6c plug)
• RJ standard compatibility (RJ11, RJ12, RJ14, RJ25)
• Shielding classification (unshielded)
• Termination method (IDC)
• Physical dimensions (0.525" length)
• Electrical ratings (1.5 A current, 150V voltage)
• Contact material and finish specifications (Phosphor Bronze with 50.0µin gold plating)
• Housing material (Polycarbonate)
• Mechanical features (offset latch)

The primary distinction is that 940-SP-3066-OST is an active product with expanded cable type compatibility (solid or stranded wires versus stranded wires only) and improved availability, while maintaining identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The 940-SP-3066-OST is the recommended substitute for the obsolete 937-SP-3066-OST. Both parts maintain identical electrical and mechanical specifications, ensuring direct functional compatibility. The substitute part offers the following advantages:

• Active product status with established supply chain availability
• RoHS3 compliance certification, meeting current environmental and regulatory requirements
• Expanded cable type compatibility (solid or stranded wires) providing greater design flexibility
• Significantly higher inventory levels supporting production continuity

Selection of 940-SP-3066-OST eliminates obsolescence risk while maintaining full electrical and mechanical interchangeability with existing designs utilizing 937-SP-3066-OST.

Frequently Asked Questions (FAQ)

Q: Are 937-SP-3066-OST and 940-SP-3066-OST electrically and mechanically interchangeable?

A: Yes. Both parts are 6p6c modular plug connectors with identical electrical ratings (1.5 A, 150V), contact materials (Phosphor Bronze with 50.0µin gold plating), physical dimensions (0.525" length), and mechanical features (offset latch, unshielded, IDC termination). They are direct functional equivalents.

Q: What is the primary difference between these two parts?

A: The 940-SP-3066-OST is an active product with expanded cable type compatibility (solid or stranded wires) compared to the 937-SP-3066-OST (stranded wires only). Additionally, 940-SP-3066-OST carries RoHS3 compliance certification and maintains higher inventory availability.

Q: Can I use 940-SP-3066-OST as a direct replacement in existing designs?

A: Yes. The substitute part maintains identical specifications for connector type, contact configuration, electrical ratings, physical dimensions, and mechanical features. No design modifications are required.

Q: Does the cable type difference affect compatibility?

A: No. The 940-SP-3066-OST accepts both solid and stranded wires, making it compatible with applications using either wire type. This represents an enhancement over the original part specification.

Q: Are there any compliance or regulatory differences?

A: The 940-SP-3066-OST includes RoHS3 compliance certification. Both parts maintain REACH Unaffected status and EAR99 export classification. The substitute part meets current environmental regulatory requirements.

Q: What is the packaging difference?

A: The 937-SP-3066-OST packaging is not specified. The 940-SP-3066-OST is supplied in bulk packaging, which is standard for active production parts.