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Black and gray modular jacks with a combination of port configurations.

High-Performance Modular Jacks for Reliable Connectivity

Molex Modular Jacks and Plugs deliver the high-speed connectivity required when supporting applications including voice, data, video, and networking. Their standardized design allows for easy installation, providing a cost-effective and scalable solution for both commercial and residential systems.

Current Voltage Operating Temperature
Up to 1.5A 150V rms AC -40 to +85°C

1x1 Port Configuration

 Singular-port, black modular jack with gold plating.

1x2 Port Configuration

Two-port, right-angle, black modular jack with light pipes.

1x4 Port Configuration

Four-port, right-angle, black modular jack.

1x6 Port Configuration

Six-port, right-angle, black modular jack.

1x8 Port Configuration

Eight-port, right-angle, black modular jack.

2x4 Port Configuration

Eight-port, right-angle, silver modular jack.

2x6 Port Configuration

Twelve-port, right-angle, silver modular jack.

Modular Plugs

Gray, long body modular plug.

Features and Benefits


With the rise of IoT, 5G networks and extreme data rate bandwidth requirements, engineers are now under increasing pressure to maximize signal integrity and connector density. To meet these needs, connectors are required to support high-speed data rates, mitigate the effects of EMI, and protect against voltage spikes and unexpected surges. A range of Molex Modular Jacks and Plugs overcome these challenges by delivering high quality connections capable of high data rates, scaling with changing needs and meeting future requirements.

For high-speed applications, a significant obstacle is maintaining signal integrity, as high-speed data lines are prone to even small amounts of EMI and crosstalk. Molex Modular Jacks and Plugs solve this with the integration of advanced EMI shielding, preventing outside interference from affecting signal quality. 

Furthermore, many applications demand increased durability and long-term reliability in harsh conditions, including resistance from moisture, dust and dirt, as well as the need for support through many mating cycles. To meet these demands, Molex Modular Jacks and Plugs are designed with strength and resilience, offering dependable performance and extended product life to support stable, long-lasting connectivity.

Provides advanced EMI/RFI protection

The shielding design of Molex Modular Jacks and Plugs minimizes external interference and radiated emissions, maintaining strong signal integrity and reliable high-speed performance across demanding network environments.

Gray, long body modular jack.

Helps Cater to Various Performance Standards and Capabilities

Molex Modular Jacks and Plugs support multiple category ratings from Cat3 to Cat6, ensuring compatibility with diverse network speeds and performance requirements across commercial and industrial applications.

Singular-port, black modular jack.

Achieves 2,500 Mating Cycles

Palladium nickel with gold-flash plating enhances wear resistance, corrosion protection and electrical conductivity, enabling Modular Jacks to maintain reliable mechanical and electrical performance through up to 2,500 mating cycles.

 Two-port, black modular jack.

Provides a versatile and cost-effective solution
Modular Jacks and Plugs deliver versatility and value by supporting a wide range of applications, reducing installation and component, and providing customizable, space-saving solutions that integrate seamlessly into diverse systems.

Simplifies installation
Modular Jacks and Plugs simplify integration with standardized designs, quick assembly features and low insertion force for efficient, reliable installation across a variety of applications.

Maximizes design flexibility
Modular Jacks and Plugs offer multiple mounting styles and support high-speed data transmission, enabling designers to customize solutions for the unique requirements of each application.

Enables tight board stacking
Molex low-profile Modular Jacks reduce connector height, maximizing PCB space and enabling compact, high-density system designs for space-constrained applications.

Supports flexibility in fitting different panel cut-out needs
Modular Jacks feature multiple panel grounding tab configurations, ensuring compatibility with various cut-out sizes and mounting setups while enhancing signal integrity, EMI shielding and mechanical stability.

Meets the IEC60603-7 industry standard and is approved for all IEC license applications 
Molex Modular Jacks use specialized plating options to deliver excellent electrical performance, corrosion resistance and EMI shielding, ensuring compliance with IEC60603-7 and suitability for all IEC-licensed applications.

Helps prevent the insertion of an RJ11 plug into an RJ45 housing
Modular Jacks feature a “keep out” design that acts as a physical barrier, protecting contacts from damage and ensuring only compatible plugs are inserted.

Datasheets and Guides


Applications by Industry


Fax machines
Gaming devices
Photo copiers
Printers
Vending machines

Control units
Security systems
Test equipment
Vision systems

Diagnostic equipment
Patient monitoring systems

Routers
Servers
Switches

Internet connections
Patch panels
Telephone systems

This is not a definitive list of applications for this product. It represents some of the more common uses.

Frequently Asked Questions


What is a modular jack?

A modular jack is a standardized connector commonly used in telecommunications and data networking to provide a reliable interface. The RJ45 version is the most common type used for Ethernet connections in local area networks, while the RJ11 type remains standard in telephone systems. Modular jacks are designed to ensure consistent electrical performance, secure mating and easy installation across a wide range of equipment.

What are the different types of modular jacks?

Modular jacks are categorized depending on the shape and number of contacts they have, each being uniquely ideal for different communication systems. Primarily used in Ethernet networking, the most common is the RJ45 jack that supports cable categories from Cat5e to Cat6a. The second most common is the RJ11 jack with six positions but only using 2 to 4 contacts and typically used for analog telephone lines. The RJ12 version uses six contacts to support more complex telecom systems. In applications where these connectors are unsuitable, specialized or custom modular jacks are available for industrial and proprietary applications that require unique configurations or electrical performance.

What factors should I consider when choosing a modular jack?

To select the right connector for an application, engineers must take multiple factors into consideration. To start, the number of contacts and positions will likely be determined if a standard is being used (such as Ethernet), but in unique applications, these will depend on signal and power requirements. Cable compatibility also needs to be considered, along with the speed requirements. This also ties in to shielding requirements, as high-speed cables often need adequate shielding. Environmental considerations and durability also play a considerable role, especially in harsh industrial and commercial environments. Finally, compliance with industrial standard such as TIA and EIA should be evaluated.

Can modular jacks support high-speed Ethernet?

Modern modular jacks are ideal for carrying high speed Ethernet, especially the RJ45 variation, as long as they are paired with the appropriate cable category (for example, Cat6a and Cat7 for 10Gbps) and correctly terminated.