Stewart Connector - High-Performance Connectivity Solutions

Stewart Connector, a division of Bel Fuse Inc., offers a comprehensive portfolio of passive connectors, premise wiring, and ICM MagJack Active connectors designed to meet the demanding requirements of high-performance communication environments. With a focus on Ethernet connectivity, Stewart Connector provides interconnect products including passive jacks, plugs, and cable assemblies for networking equipment and structured cabling systems. All products are engineered to meet current performance standards, including Category 6a regulations for Gigabit Ethernet and 10 Gigabit Ethernet applications. Bel is committed to RoHS compliance, eliminating lead and other banned substances from their products.

Company Profile

Bel, a NASDAQ company founded in 1949 and headquartered in Jersey City, New Jersey, is a global manufacturer of electronic components for the computer, networking, and telecommunication industries. Bel enables high-speed communication through new product development for emerging technologies and offers a broad portfolio including circuit protection, power conversion modules, transformers, connector modules, and integrated line interface products. With over sixty years of experience and global manufacturing facilities, Bel employs over 10,000 people worldwide.

Product Categories

• Modular Jacks (Single Port Right Angle, Vertical / 45 Degree)
• ARJ45 Category 7a
• MRJ21 Cables Assemblies & Patch Panels
• Modular Plugs
• Protective Sealant (EPP-918A)
• RJ point five Connectors
• Harmonica Jacks
• Stacked Jacks

Product Attributes

• Brand: Stewart Connector
• Parent Company: Bel Fuse Inc.
• Certifications: RoHS Compliant, UL 94V-0 rated (Housing Material), DUXR2 and DUXR8 certified (Harmonica/Stacked Jacks)
• Manufacturing Locations: Glen Rock, PA and Hangzhou, China
• RoHS Status: Bel is committed to RoHS compliance; select products may use lead in solder for electrical terminations under exemption. Consult data sheets for specific compliance.

Technical Specifications - Modular Jacks

Specifications / Design Features (General for Single Port Jacks):

• Housing Material: UL 94V-0 rated glass-filled thermoplastic
• Contact Material: Copper Alloy
• Contact Plating: Selective gold plating in the contact interface
• Current Rating: 1.5 A (maximum) @ 25 C
• Voltage Rating: 150 VAC (maximum)
• EPP-918A contact dressing available for increased durability and protection in harsh environments.

Single Port Right Angle Modular Jacks - How to Order Example

Single Port Vertical / 45 Degree Modular Jacks - How to Order Example

ARJ45 Category 7a

Description: The ARJ45 connector system is designed for Category 7 and Category 7a premise wiring systems, supporting 10 Gigabit Ethernet and higher speed data transmission environments. It offers interface compatibility with the Nexans GG45 Connector System and features a patented plug design for high port density and integrated strain relief with latch protection. Uses data pair isolation technology for high frequency performance.

Specifications / Design Features:

• Frequency: Up to & beyond 1,000 MHz
• Interface compatible with Nexans GG45 Connector System
• Patented plug design allows port density equivalent to standard RJ45 connectors
• Integral slim line strain relief with built-in latch protection
• Uses data pair isolation technology
• Performance capabilities beyond 10GBase-T

ARJ45 CAT7a Cables - How to Order Example

ARJ45 CAT7a Connectors - How to Order Example

MRJ21 Cables Assemblies

Description: Stewarts MRJ21 cable assembly products are designed for increased patch panel density in telecom and premise wiring applications. This platform supports applications like Gigabit Ethernet, VoIP, and PoE. Features include dense, double-bladed design for higher port density than standard RJ45 stacked jacks, jackscrews for secure retention, full shielding, and robust receptacle board locks.

Specifications / Design Features:

• 1.5 to 3 times the port density of 26 modular RJ45 stacked jacks
• Three times the port density of RJ21 connectors
• Jackscrews for positive latching and secure cable retention
• Fully shielded to reduce EMI emissions
• Robust receptacle board lock design for superior PCB strain relief
• Cable exit options: 180 straight, 45 left or right
• Durability tested to 500 cycles

MRJ21 Cable Assemblies - How to Order Example

* xxxx denotes desired cable length from 0.5 to 100.0 meters, in 0.5 meter increments.

MRJ21 48 Position Patch Panels

Description: The MRJ21 Patch Panel is a high-density device that transitions MRJ21 connectivity to traditional RJ45 ports, facilitating interface with existing infrastructure. It supports Gigabit Ethernet and 10/100 Base-T applications and fits into a standard 19 rack.

Specifications / Design Features:

• Provides a transition point from MRJ21 to RJ45 connectivity
• Versions available to support Gigabit Ethernet and 10/100 Base-T
• Accommodates shielded and unshielded cabling solutions
• 19 rack mounted
• 1 RU (Rack Unit) High
• 48 port
• UL listed

MRJ21 48 Position Patch Panels - How to Order Example

Modular Plugs

Description: Stewart Connector offers a wide array of RJ45 modular plugs, including next-generation shielded and unshielded CAT6a plugs with wire management systems for 10GBase-T applications. Options for high port density with slim line boots and latch protection are available, as well as plugs with keying for proprietary systems.

Specifications / Design Features:

• Electro-polished contact designs for solid and stranded conductors
• Performance levels from CAT3 through CAT6a
• Wire management systems for improved assembly and performance
• Available in 4 through 10 position selectively loaded contact configurations
• Numerous keying options available on select models
• Strain relief boots with latch protection available on certain configurations
• Designed to exceed TIA-568 and IEC 60603-7 specifications

Modular Plugs - How to Order Example

EPP-918A Protective Sealant

Description: Stewarts EPP-918A protectant enhances product reliability by providing defense against harsh environmental conditions, including moisture, humidity, corrosion, and wear from repetitive mating/un-mating forces. It adheres instantly to contacts and does not migrate, offering a cost-effective solution for prolonged contact life in static or mobile applications.

Specifications / Design Features:

• Improves durability and reliability for RJ11 and RJ45 modular jacks
• Prevents corrosion from harsh environmental conditions
• Withstands high temperature soldering (in excess of 260 C for 10 seconds)
• Low Level Contact Resistance testing to 10K cycles with no measurable change
• Contains a UV tracer for visible inspection
• RoHS compliant

Connectors with Protective Sealant - How to Order Example

RJ point five Connectors

Description: The RJ point five connector system offers nearly double the port density compared to standard RJ45 connectors, ideal for OEMs seeking increased density and reduced cost-per-port. It supports Gigabit Ethernet speeds for CAT5e cabling and provides a migration path to 10GBase-T over CAT6a applications. Features include an integrated cable strain relief and plug shield, and LED light transmission via fiber optic light pipes.

Specifications / Design Features:

• Designed for up to CAT5e applications
• Nearly double the port density of standard RJ45 Ethernet links
• Plug release pull tab for ease of removal
• LED light travels through the plug via fiber optic light pipes
• Integrated cable strain relief and plug shield
• Modular receptacle design for quick deployment
• Supports Gigabit Ethernet speeds for CAT5e
• Supports PoE Plus and migration path to 10GBase-T over CAT6a

RJ point five Cable Assemblies - How to Order Example

RJ point five Connectors - How to Order Example

Harmonica Jacks

Description: Stewart Connector offers CAT3 and CAT5e Harmonica Jacks designed for space-saving and high reliability in integrated data systems. Enhanced shielding provides optimum protection against EMI, and unique panel tabs ensure high normal force for superior shielding effectiveness. Longer springs allow for repeated insertions/withdrawals.

Specifications / Design Features:

• CAT3 to CAT5e connectors available in shielded and unshielded configurations
• Provides 100 g of Contact Normal Force (minimum)
• Jack dimensions meet FCC requirements
• Jacks are UL approved and DUXR2 and DUXR8 certified
• RoHS compliant
• Available in high-temperature plastics
• EPP-918A contact dressing available for increased durability

Harmonica Jacks - How to Order Example

Stacked Jacks

Description: Stewart Connector offers CAT3 and CAT5e StackJacks, providing high reliability and performance in integrated data systems. Enhanced shielding protects against EMI, and unique panel tabs ensure high normal force. Longer springs facilitate repeated insertions/withdrawals.

Specifications / Design Features:

• CAT3 to CAT5e connectors available in shielded and unshielded configurations
• Provides 100 g of Contact Normal Force (minimum)
• Jack dimensions meet FCC requirements
• Jacks are UL approved and DUXR2 and DUXR8 certified
• Meets RoHS and REACH requirements
• Plastics are high temperature
• EPP-918A contact dressing available for increased durability

Stacked Jacks - How to Order Example

Contact Information

• Phone: +1 717.235.7512
• Email: techhelp@belf.com
• Website: stewartconnector.com

Company Locations

• Stewart Connector: 11118 Susquehanna Trail South Glen Rock, PA. 17327
• Bel Stewart GmbH: Industriestrasse 20 61381 Friedrichsdorf, Germany
• Bel Fuse Ltd.: 8/F Luk Hop Industrial Building 8 Luk Hop Street San Po Kong Kowloon, Hong Kong

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