SS-666602-NF Modular Connector Equivalent & Substitute Parts

Part Overview

The SS-666602-NF is a jack modular connector from Stewart Connector's 66 series, designed for 6p6c (RJ11, RJ12, RJ14, RJ25) applications. This connector features a 90° right-angle orientation with through-hole solder termination and unshielded construction rated for Cat5 applications. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

SS-666602-NF

Stewart ConnectorIn Stock: 1469SS-666602-NF Datasheet

Current PartRFQ

SS66600-021G

Stewart ConnectorIn Stock: 807SS66600-021G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS-666602-NF is determined by the following critical parameters:

• Connector type (Jack modular connector)
• Contact configuration (6p6c / RJ11, RJ12, RJ14, RJ25 compatibility)
• Mounting method (Through hole solder termination)
• Physical orientation (90° right-angle)
• Port count (2 ports)
• Row configuration (1 row)
• Operating temperature range (-40°C ~ 85°C)
• Contact material and finish specifications (Copper alloy with gold plating)
• Regulatory compliance (ROHS3, REACH Unaffected, EAR99)

The primary distinction between the main part and available substitutes is the shielding configuration. The SS-666602-NF is unshielded, while substitute options may include shielded variants. Shielded versions provide electromagnetic interference protection and are mechanically compatible through identical mounting, orientation, and termination methods.

Parameter Comparison

Engineering Selection Recommendations

The SS66600-021G is the manufacturer-recommended substitute for the obsolete SS-666602-NF. Both components maintain identical mechanical and electrical specifications across all critical parameters: connector type, contact configuration, mounting method, orientation, termination style, contact materials, and operating temperature range.

The primary functional difference is the addition of shielding in the SS66600-021G. This enhancement provides electromagnetic interference mitigation while preserving full mechanical and electrical compatibility. The substitute part includes board lock and EPP918A features and maintains active product status with current manufacturing support.

Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future applications. The SS66600-021G's active product status and established supply chain make it the appropriate selection for new designs and replacement applications where the obsolete SS-666602-NF is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the SS66600-021G directly replace the SS-666602-NF in existing designs?

A: Yes. The SS66600-021G maintains identical mounting, orientation, termination, and contact specifications. The shielded construction is mechanically and electrically compatible with unshielded connector footprints. No PCB redesign is required.

Q: What is the functional difference between shielded and unshielded variants?

A: Shielded connectors (SS66600-021G) provide electromagnetic interference protection through grounded shield construction. Unshielded connectors (SS-666602-NF) lack this protection. Both variants support identical signal transmission for 6p6c modular applications.

Q: Are there compatibility concerns with mating plugs?

A: No. Both jack variants accept standard 6p6c modular plugs (RJ11, RJ12, RJ14, RJ25). Shielded jacks are compatible with both shielded and unshielded plugs.

Q: What is the MSL rating difference between these parts?

A: The SS-666602-NF lists MSL as Not Applicable. The SS66600-021G specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for the active substitute.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the SS-666602-NF and SS66600-021G meet ROHS3 compliance requirements and are REACH unaffected.

Q: What features distinguish the SS66600-021G?

A: The SS66600-021G includes board lock and EPP918A features in addition to shielded construction. These features enhance mechanical retention and environmental protection compared to the original unshielded design.