SS-7188S-A-PG4-BA Modular Connector Jack 8P8C RJ45 Equivalent & Substitute Parts

Part Overview

The SS-7188S-A-PG4-BA is a Jack Modular Connector 8p8c (RJ45, Ethernet) with 90° right-angle orientation, shielded design with EMI finger, and Cat5e rating. Manufactured by Stewart Connector, this component is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts from active product lines is essential for design continuity, procurement reliability, and long-term system support.

Substiute Parts

SS-7188S-A-PG4-BA

Stewart ConnectorIn Stock: 855SS-7188S-A-PG4-BA Datasheet

Current PartRFQ

SS-7188S-A-PG4-BA-50

Stewart ConnectorIn Stock: 5418SS-7188S-A-PG4-BA-50 Datasheet

DirectRFQ

1-5406299-1

TE Connectivity AMP ConnectorsIn Stock: 55831-5406299-1 Datasheet

MFR RecommendedRFQ

5406299-1

TE Connectivity AMP ConnectorsIn Stock: 12195406299-1 Datasheet

MFR RecommendedRFQ

A-2004-2-4-R

Assmann WSW ComponentsIn Stock: 1191A-2004-2-4-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SS-7188S-A-PG4-BA is determined by the following critical parameters:

• Connector Type & Contact Count: Jack configuration with 8p8c (RJ45, Ethernet) contacts
• Orientation: 90° right-angle mounting
• Mounting Method: Through-hole solder termination
• Shielding Configuration: Shielded design with EMI finger protection
• Operating Temperature Range: -40°C to 85°C compatibility
• Contact Finish: Gold plating for signal integrity

Substitute parts are grouped into two categories:

Category 1 - Direct Functional Equivalents (Shielded): Parts maintaining identical shielding, contact material specifications, and electrical ratings. These include SS-7188S-A-PG4-BA-50 (Stewart Connector) and 1-5406299-1 and 5406299-1 (TE Connectivity AMP Connectors).

Category 2 - Functional Alternative (Unshielded): Part A-2004-2-4-R (Assmann WSW Components) provides mechanical and electrical compatibility but with unshielded design, suitable only for applications where EMI shielding is not required.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - SS-7188S-A-PG4-BA-50: This Stewart Connector part is the direct successor to the obsolete SS-7188S-A-PG4-BA. It maintains identical mechanical and electrical specifications with active product status, ROHS3 compliance, and unlimited moisture sensitivity level (MSL 1). The only difference is increased contact finish thickness (50.0µin versus 30.0µin), which enhances durability without affecting electrical performance. This part is recommended for direct replacement in existing designs.

Secondary Substitutes - 1-5406299-1 and 5406299-1: Both TE Connectivity AMP Connectors parts provide shielded 8p8c RJ45 jack configurations with 90° right-angle orientation and solder termination. These parts are active, ROHS3 compliant, and feature phosphor bronze contacts with gold finish. They are suitable alternatives where Stewart Connector supply is unavailable. Note that 5406299-1 has vendor-undefined REACH status.

Alternative for Non-EMI Applications - A-2004-2-4-R: The Assmann WSW Components part A-2004-2-4-R provides mechanical compatibility but with unshielded design. This part is suitable only for applications where EMI shielding is not a functional requirement. It features ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can SS-7188S-A-PG4-BA-50 be used as a direct replacement for SS-7188S-A-PG4-BA?

A: Yes. SS-7188S-A-PG4-BA-50 is the active equivalent with identical connector type, contact configuration, orientation, mounting method, shielding, and operating temperature range. The increased contact finish thickness (50.0µin) provides enhanced durability and is fully compatible with the original design.

Q: What is the difference between the Stewart Connector and TE Connectivity substitutes?

A: Both maintain shielded 8p8c RJ45 jack configuration with 90° right-angle orientation. The primary difference is contact material: Stewart Connector uses copper alloy, while TE Connectivity uses phosphor bronze. Both materials are suitable for Ethernet applications. TE Connectivity parts have higher inventory availability.

Q: Can A-2004-2-4-R replace the shielded SS-7188S-A-PG4-BA?

A: A-2004-2-4-R provides mechanical and pin compatibility but lacks EMI shielding. It is suitable only for applications where electromagnetic interference protection is not required. For designs requiring shielded connectors, use SS-7188S-A-PG4-BA-50, 1-5406299-1, or 5406299-1.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SS-7188S-A-PG4-BA-50, 1-5406299-1, 5406299-1, and A-2004-2-4-R are all ROHS3 compliant. The original SS-7188S-A-PG4-BA RoHS status is not specified.

Q: What is the packaging difference between substitute parts?

A: All substitute parts are supplied in tray packaging. The original SS-7188S-A-PG4-BA packaging is not specified. Tray packaging is standard for modular connector distribution and does not affect electrical or mechanical performance.

Q: Do all parts support the same operating temperature range?

A: Yes. All parts, including the main part and all substitutes, operate within -40°C to 85°C, ensuring thermal compatibility across designs.