SS-668808S-A-NF Equivalent & Substitute Parts

Part Overview

The SS-668808S-A-NF is a modular jack connector manufactured by Stewart Connector, designed for 8p8c (RJ45, Ethernet) applications with 90° right-angle orientation and shielded construction. This connector features through-hole solder termination and is rated for operating temperatures from -40°C to 85°C. The product is currently classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and component procurement.

Substiute Parts

SS-668808S-A-NF

Stewart ConnectorIn Stock: 773SS-668808S-A-NF Datasheet

Current PartRFQ

SS-718808S-A-NF

Stewart ConnectorIn Stock: 1026SS-718808S-A-NF Datasheet

MFR RecommendedRFQ

5558505-1

TE Connectivity AMP ConnectorsIn Stock: 9595558505-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS-668808S-A-NF is determined by strict alignment with the following core parameters:

• Connector type: Jack
• Contact configuration: 8p8c (RJ45, Ethernet)
• Orientation: 90° right-angle
• Mounting type: Through hole
• Termination: Solder
• Shielding: Shielded
• Port and row configuration: 8 ports, 1 row
• Operating temperature range: -40°C to 85°C
• Moisture sensitivity level: 1 (Unlimited)

Two substitute parts meet these criteria: SS-718808S-A-NF (Stewart Connector, Series 71) and 5558505-1 (TE Connectivity AMP Connectors). Both maintain functional and mechanical compatibility with the original part while offering active product status and current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts provide active product status and current manufacturing availability, addressing the obsolescence of the SS-668808S-A-NF.

SS-718808S-A-NF maintains manufacturer continuity with Stewart Connector and offers ROHS3 compliance. This part is rated for Cat5e applications and retains identical contact finish thickness and housing material specifications. The inclusion of both board guide and board lock features matches the original design.

5558505-1 from TE Connectivity AMP Connectors provides an alternative from an established connector manufacturer. This part is rated for Cat5 applications and features a higher contact finish thickness (50.0µin versus 30.0µin), which may provide enhanced durability in high-cycle applications. The housing material differs (polyamide/nylon versus thermoplastic) and includes board guide but not board lock functionality. REACH status is listed as vendor undefined.

Selection between these substitutes should be based on design requirements for network rating (Cat5e versus Cat5), mechanical feature requirements (board lock presence), and compliance documentation needs specific to your application.

Frequently Asked Questions (FAQ)

Q: Can SS-718808S-A-NF and 5558505-1 be used interchangeably with SS-668808S-A-NF?

A: Both parts meet the core electrical and mechanical substitution criteria: 8p8c jack configuration, 90° right-angle orientation, through-hole solder termination, shielded construction, and identical operating temperature range. Physical board-level compatibility depends on PCB footprint design and mechanical feature requirements (board lock availability differs between substitutes).

Q: What is the difference between Cat5 and Cat5e ratings?

A: Cat5e represents an enhanced specification of Cat5 cabling standards. The 5558505-1 is rated for Cat5, while SS-718808S-A-NF is rated for Cat5e. Both are suitable for standard Ethernet applications within their respective performance specifications.

Q: Why does 5558505-1 have thicker gold plating?

A: The 5558505-1 features 50.0µin (1.27µm) contact finish thickness compared to 30.0µin (0.76µm) on the original and SS-718808S-A-NF. Thicker plating can provide extended contact life in high-cycle mating applications, though both thicknesses meet standard Ethernet connector requirements.

Q: Does the difference in housing material affect performance?

A: The original uses thermoplastic housing while 5558505-1 uses polyamide (PA) nylon. Both materials are suitable for the specified operating temperature range (-40°C to 85°C) and moisture sensitivity level. Material selection may affect mechanical properties such as rigidity and long-term dimensional stability under thermal cycling.

Q: Are there compliance differences between the substitutes?

A: SS-718808S-A-NF carries ROHS3 compliance certification. The 5558505-1 is also ROHS3 compliant. REACH status differs: SS-718808S-A-NF is REACH Unaffected, while 5558505-1 shows vendor undefined status. Verify REACH compliance documentation with TE Connectivity if this certification is required for your application.

Q: What is the significance of the board lock feature?

A: The board lock feature on SS-668808S-A-NF and SS-718808S-A-NF provides mechanical retention of the connector to the PCB during assembly and operation. The 5558505-1 includes board guide but not board lock. If your design relies on board lock functionality for mechanical stability, verify that the PCB footprint and assembly process accommodate this difference.