SI-50109-F Equivalent & Substitute Parts

Part Overview

The SI-50109-F is a 1 Port RJ45 Through Hole modular connector manufactured by Stewart Connector, designed for 10/100/1000 Base-T Ethernet applications with AutoMDIX support. This connector features a 90° right-angle orientation, solder termination, and integrated EMI shielding with board guide. The part is currently Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility and supply chain continuity.

Substiute Parts

SI-50109-F

Stewart ConnectorIn Stock: 1024SI-50109-F Datasheet

Current PartRFQ

0816-1X1T-23-F

Bel Fuse Inc.In Stock: 859970816-1X1T-23-F Datasheet

DirectRFQ

7499111000A

Würth ElektronikIn Stock: 13137499111000A Datasheet

MFR RecommendedRFQ

JK0-0187NL

Pulse ElectronicsIn Stock: 1196JK0-0187NL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI-50109-F is determined by strict alignment of the following parameters:

• Connector Type & Port Configuration: RJ45, single port, 12-core jack
• Mounting & Orientation: Through hole, 90° right-angle orientation
• Electrical Application: 10/100/1000 Base-T with AutoMDIX support
• Shielding & EMI Protection: Shielded construction with EMI finger
• Termination Method: Solder termination
• Compliance: ROHS3 compliance and REACH unaffected status

The three identified substitutes—0816-1X1T-23-F (Bel Fuse Inc.), 7499111000A (Würth Elektronik), and JK0-0187NL (Pulse Electronics)—meet these core electrical and mechanical criteria. Variations in operating temperature range, contact material composition, height above board, and housing material do not preclude substitution when application thermal and mechanical constraints are satisfied.

Parameter Comparison

Engineering Selection Recommendations

All four parts—SI-50109-F, 0816-1X1T-23-F, 7499111000A, and JK0-0187NL—maintain Active product status and satisfy ROHS3 and REACH compliance requirements. Selection between these parts should be based on application-specific thermal and mechanical constraints:

SI-50109-F (Stewart Connector): Supports extended operating temperature range (-40°C to 85°C), suitable for industrial and automotive applications requiring wider thermal tolerance. Copper alloy contacts with 50.0µin gold finish and unlimited MSL rating provide robust performance in demanding environments.

0816-1X1T-23-F (Bel Fuse Inc.): Operates within 0°C to 70°C range with Tray packaging. Copper alloy contacts match SI-50109-F specifications. Not applicable MSL designation indicates different moisture handling classification. Suitable for standard commercial applications.

7499111000A (Würth Elektronik): Operates within 0°C to 70°C range with Tube packaging. Height above board is 0.570" (14.50mm), approximately 0.034" taller than SI-50109-F. Tin contact material with 30.0µin gold finish thickness differs from primary part. Evaluate PCB clearance and thermal cycling requirements before selection.

JK0-0187NL (Pulse Electronics): Operates within 0°C to 70°C range with integrated green LED indicators. Phosphor bronze contacts with 50.0µin gold finish. Height above board is 0.546" (13.87mm). LED functionality adds visual status capability for network link indication.

Frequently Asked Questions (FAQ)

Q: Can SI-50109-F be directly replaced with 0816-1X1T-23-F?

A: Yes, when application operating temperature does not exceed 70°C. Both parts share identical connector type, port configuration, mounting orientation, solder termination, and contact finish specifications. Verify PCB layout compatibility and thermal requirements before substitution.

Q: What is the primary difference between SI-50109-F and 7499111000A?

A: The 7499111000A has a taller profile (0.570" vs. 0.536") and uses tin contact material with thinner gold plating (30.0µin vs. 50.0µin). Operating temperature range is also reduced to 0°C–70°C. Confirm PCB clearance and contact durability requirements for your application.

Q: Does JK0-0187NL include LED functionality?

A: Yes, JK0-0187NL integrates green LED indicators for network link status. If LED functionality is not required, this feature does not affect electrical substitution compatibility but may impact PCB design considerations.

Q: Are all substitute parts ROHS3 compliant?

A: SI-50109-F, 0816-1X1T-23-F, and 7499111000A are explicitly ROHS3 compliant. JK0-0187NL is RoHS compliant. All parts maintain REACH unaffected status.

Q: What packaging options are available?

A: SI-50109-F is supplied without specified packaging designation. 0816-1X1T-23-F is supplied in Tray. 7499111000A is supplied in Tube. JK0-0187NL is supplied in Tray. Verify packaging requirements for your procurement and assembly processes.

Q: Can these connectors be used in applications below 0°C?

A: SI-50109-F supports operation down to -40°C. The three substitute parts are rated only to 0°C minimum. For applications requiring sub-zero operation, SI-50109-F is the appropriate selection.