SS-668804S-A-PG4-AC-50 Equivalent & Substitute Parts

Part Overview

The SS-668804S-A-PG4-AC-50 is a modular jack connector manufactured by Stewart Connector, designed for 8p8c (RJ45, Ethernet) applications. This connector features a 90° right-angle orientation with shielding and EMI finger protection, suitable for through-hole mounting with solder termination. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	SS-668804S-A-PG4-AC-50
Manufacturer	Stewart Connector
Category	Modular Connectors
Connector Type	Jack
Number of Positions/Contacts	8p8c (RJ45, Ethernet)
Number of Ports	4
Orientation	90° Angle (Right)
Mounting Type	Through Hole
Termination	Solder
Shielding	Shielded, EMI Finger
Contact Material	Copper Alloy
Contact Finish	Gold
Housing Material	Thermoplastic
Tab Direction	Down
Features	Board Guide
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SS-668804S-A-PG4-AC-50 is determined by strict equivalence across the following critical parameters:

Connector type: Jack modular connector
Contact configuration: 8p8c (RJ45, Ethernet)
Port count: 4 ports
Orientation: 90° right-angle
Mounting method: Through hole
Termination method: Solder
Shielding: Shielded with EMI finger
Contact material and finish: Copper alloy with gold plating
Housing material: Thermoplastic
Tab direction: Down
Board guide feature: Present

The substitute part SS-668804S-A-PG4-AC meets all these criteria and is classified as an active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Parameter	SS-668804S-A-PG4-AC-50 (Main)	SS-668804S-A-PG4-AC (Substitute)
Manufacturer	Stewart Connector	Stewart Connector
Category	Modular Connectors	Modular Connectors
Connector Type	Jack	Jack
Number of Positions/Contacts	8p8c (RJ45, Ethernet)	8p8c (RJ45, Ethernet)
Number of Ports	4	4
Orientation	90° Angle (Right)	90° Angle (Right)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Shielding	Shielded, EMI Finger	Shielded, EMI Finger
Contact Material	Copper Alloy	Copper Alloy
Contact Finish	Gold	Gold
Contact Finish Thickness	50.0µin (1.27µm)	30.0µin (0.76µm)
Housing Material	Thermoplastic	Thermoplastic
Tab Direction	Down	Down
Features	Board Guide	Board Guide
Product Status	Obsolete	Active
Operating Temperature	Not specified	-40°C ~ 85°C
RoHS Status	Not specified	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The SS-668804S-A-PG4-AC is the direct substitute for the obsolete SS-668804S-A-PG4-AC-50. Both parts are manufactured by Stewart Connector and share identical mechanical and electrical specifications across all critical parameters. The substitute part carries active product status, ensuring ongoing availability and supply chain continuity.

The substitute part provides additional compliance documentation with ROHS3 certification and specified operating temperature range (-40°C ~ 85°C), which may be beneficial for applications requiring regulatory compliance verification. The contact finish thickness difference (30.0µin versus 50.0µin) remains within acceptable tolerances for equivalent electrical and mechanical performance in standard Ethernet applications.

Selection of the SS-668804S-A-PG4-AC is appropriate for all applications previously designed around the SS-668804S-A-PG4-AC-50, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can the SS-668804S-A-PG4-AC be used as a direct replacement for the SS-668804S-A-PG4-AC-50?

A: Yes. Both parts are identical in connector type, contact configuration, orientation, mounting method, termination, shielding, and all other critical mechanical and electrical parameters. The substitute part is currently in active production status.

Q: What is the difference in contact finish thickness between these parts?

A: The main part specifies 50.0µin (1.27µm) gold plating thickness, while the substitute specifies 30.0µin (0.76µm). Both thicknesses meet standard requirements for 8p8c modular connectors and provide equivalent corrosion resistance and electrical performance for Ethernet applications.

Q: Does the substitute part have different operating temperature specifications?

A: The substitute part specifies an operating temperature range of -40°C ~ 85°C. The main part does not include operating temperature specifications in the available documentation. This additional specification on the substitute part does not restrict its use in applications previously designed for the main part.

Q: Is the substitute part RoHS compliant?

A: Yes. The SS-668804S-A-PG4-AC carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status.

Q: Are there packaging differences between these parts?

A: The main part packaging is not specified. The substitute part is supplied in bulk packaging. Verify packaging requirements for your procurement process.

Q: What is the base product number for the substitute part?

A: The base product number is SS-6688, which identifies the core connector family within the Stewart Connector 66 series.

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