SS-7188S-A-NF-1 Modular Connector Jack Equivalent & Substitute Parts

Part Overview

The SS-7188S-A-NF-1 is an 8p8c (RJ45, Ethernet) modular connector jack manufactured by Stewart Connector. This shielded, right-angle through-hole jack is designed for Cat5e applications and features a board lock mechanism. The connector is actively produced and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part is unavailable or when inventory optimization is required.

Substiute Parts

SS-7188S-A-NF-1

Stewart ConnectorIn Stock: 709SS-7188S-A-NF-1 Datasheet

Current PartRFQ

5558344-1

TE Connectivity AMP ConnectorsIn Stock: 13365558344-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 5558344-1 (TE Connectivity AMP Connectors) qualifies as an equivalent based on the following critical parameters:

Matching Parameters:

• Connector Type: Jack
• Number of Positions/Contacts: 8p8c (RJ45, Ethernet)
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Shielding: Shielded
• Number of Ports: 1
• Number of Rows: 1
• Operating Temperature Range: -40°C ~ 85°C
• Contact Finish: Gold
• LED Color: Does Not Contain LED
• Tab Direction: Down
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Contact Material: Phosphor Bronze (substitute) vs. Copper Alloy (main part) — both materials provide equivalent electrical conductivity and reliability for this application
• Contact Finish Thickness: 50.0µin (1.27µm) (substitute) vs. 30.0µin (0.76µm) (main part) — both exceed minimum durability requirements
• Shielding Configuration: EMI Finger added in substitute — provides enhanced electromagnetic interference protection
• Housing Material: Polyamide (PA), Nylon (substitute) vs. Thermoplastic (main part) — both materials meet mechanical and thermal requirements
• Ratings: Cat5 (substitute) vs. Cat5e (main part) — Cat5 is backward compatible with Cat5e applications

Parameter Comparison

Engineering Selection Recommendations

Both the SS-7188S-A-NF-1 and 5558344-1 are active products with ROHS3 compliance and MSL 1 rating, making them suitable for production use. The 5558344-1 offers enhanced EMI shielding through its EMI Finger configuration and increased contact finish thickness, which may provide extended service life in high-vibration or high-frequency environments. Selection between these parts should be based on inventory availability, lead time requirements, and specific application demands for EMI performance. Both connectors meet the electrical and mechanical requirements for 8p8c modular jack applications in Cat5/Cat5e networks.

Frequently Asked Questions (FAQ)

Q: Can the 5558344-1 be used as a direct replacement for the SS-7188S-A-NF-1?

A: Yes. Both connectors share identical connector type, contact count, mounting method, orientation, termination type, and operating temperature range. The allowable variations in contact material, finish thickness, and housing material do not prevent functional interchangeability in standard applications.

Q: What is the difference in shielding between these two parts?

A: The SS-7188S-A-NF-1 provides standard shielding. The 5558344-1 includes an EMI Finger configuration in addition to shielding, offering enhanced electromagnetic interference rejection. This difference does not prevent substitution; it represents an enhancement in the substitute part.

Q: Are there packaging differences between these connectors?

A: The SS-7188S-A-NF-1 packaging is not specified in the available data. The 5558344-1 is supplied in Tray packaging. Verify packaging requirements for your assembly process before procurement.

Q: Do both parts support Cat5e applications?

A: The SS-7188S-A-NF-1 is rated for Cat5e. The 5558344-1 is rated for Cat5. Cat5 specifications are backward compatible with Cat5e applications, so the 5558344-1 is suitable for Cat5e network installations.

Q: What is the difference in contact finish thickness?

A: The SS-7188S-A-NF-1 has 30.0µin (0.76µm) gold finish thickness. The 5558344-1 has 50.0µin (1.27µm) gold finish thickness. Both thicknesses exceed minimum durability standards for modular connector applications.