RJ45 Connector: RJ45 Connector Color Code, Where and How to Use RJ45
INSERT RJ45 JACK TO IDC CON BULK
The RJ45 connector is an eight-pin standard interface that is used to connect a computer to a local area network (LAN). This article is going to explain what is RJ45 featuring its pinout, specifications, applications, capabilities, alternatives comparison, and more about the RJ45 connector.

An eight-pin standard interface
What is RJ45 Connector?
The RJ45 connector is an eight-pin standard interface that is used to connect a computer to a local area network (LAN). Originally designed for telephone conversations, this connector is now utilized in a variety of applications. RJ45 is an abbreviation for Registered Jack-45. The wiring patterns of the jacks, rather than their physical properties, are the subject of registered jack specifications. The term RJ45 has also come to refer to a variety of Ethernet jack connectors. An 8P8C, or 8 Position/8 Contact connector, is a communications cable modular connector, It is also known as an RJ45 unofficially.

RJ45 Connector Pinout

RJ45 Connector Pinout
RJ45 Connector Features
Crimp-on the plug for use with Cat6 solid Ethernet cable
Includes insert to hold wires in place
Gold plated contacts
Clear plastic housing
RJ45 Connector Applications
Factory Automation
Industrial Process Control
Industrial Robotics (fabrication and assembly)
Test and Measurement Systems
Quality Control Systems
Voice over Internet Protocol (VOIP) Systems and Devices
Internet of Things (IOT) Network Devices

Specifications
- TypeParameter
- Factory Lead Time4 Weeks
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Connector Type
Connector Type in electronic components refers to the specific design and configuration of the connector used to establish electrical connections between different devices or components. This parameter describes the physical shape, size, and layout of the connector, as well as the number and arrangement of pins or contacts. Common connector types include USB, HDMI, RJ45, and D-sub connectors, each serving different purposes and applications. Understanding the connector type is crucial for ensuring compatibility and proper functionality when connecting electronic devices together.
RJ45 - Style
In the context of electronic components, the parameter "Style" typically refers to the physical design or form factor of the component. This includes the shape, size, and layout of the component, as well as any specific features that distinguish it from other components. Different styles of components are often designed to fit specific applications or requirements, such as surface mount components for compact circuit board designs or through-hole components for more robust connections. Understanding the style of a component is important for selecting the right part for a particular electronic design and ensuring compatibility with other components and the overall system.
Modular - Exterior Type (Adapter End)
Exterior Type (Adapter End) is a parameter used in electronic components to describe the physical design or configuration of the adapter end of a device. This parameter specifies the type of exterior connection or interface that is present on the adapter end of the component, which is used to connect the component to other devices or systems. Common types of exterior connections include USB ports, HDMI ports, Ethernet ports, and various other types of connectors. Understanding the exterior type of the adapter end is important for compatibility and proper integration of the component into a larger system or setup.
Modular Jack 8p8c (RJ45, Ethernet) - Interior Type (Adapter End)
The parameter "Interior Type (Adapter End)" in electronic components refers to the specific design or configuration of the interior connection point at the adapter end of the component. This parameter describes how the internal components are arranged and connected within the adapter end of the electronic component. It is important for ensuring compatibility and proper functioning of the component within a larger system or circuit. Different interior types may include variations in the layout, wiring, or components used within the adapter end, which can impact performance, durability, and ease of installation. Understanding and specifying the interior type of the adapter end is crucial for selecting the right component for a particular application or system.
IDC, Pressdown, Punchdown Block - Exterior Housing Color
Exterior Housing Color in electronic components refers to the color of the outer casing or enclosure of the device. This parameter is primarily aesthetic and serves to differentiate the appearance of the component. The exterior housing color can vary depending on the manufacturer's design choices and can range from standard colors like black, white, or gray to more vibrant options. It is important for both visual appeal and practical purposes, as it can help users easily identify and distinguish between different components in a system.
Silver - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant - Ratings
The parameter "Ratings" in electronic components refers to the specified limits that define the maximum operational capabilities of a component. These ratings include voltage, current, power, temperature, and frequency, determining the conditions under which the component can function safely and effectively. Exceeding these ratings can lead to failure, damage, or unsafe operation, making it crucial for designers to adhere to them during component selection and usage.
Cat6a
RJ45 VS CAT5 VS CAT6
RJ45 is an electrical connecting standard that specifies the connector and how the wires are organized at the cable's end, whereas CAT5 is an Ethernet cable standard.
RJ45 is a connection, and CAT6 is a cable, both of which are used to connect computers in an Ethernet network. RJ45 has eight pins: four visible colors and four striped pins, four of which are only used for Ethernet. CAT6 has six pins of various colors, one of which is used to connect Ethernet networking.
RJ45 VS RJ11
RJ45 connectors are often used with Cat5 and Cat6 cables, whereas RJ11 is only used with telephone cables, Switches, cables. PCs, routers, and other devices in a copper cable network can all be connected with RJ45, RJ11 connection switches typically have two sockets for a two-line telephone system.
| RJ11 | RJ45 | |
| Configuration | 6P4C (6 positions, 4 connectors) | 8P8C (8 positions, 8 connectors) |
| Shape and Size | Compact, square-shaped | Longer, more rectangular |
| Bandwidth | RJ11 connectors can support about 24Mbps | RJ45 connectors can support 10Gbps over Ethernet. |
| Usage | Phones, ADSL lines, modem cables. RJ11 is mostly used for voice applications. | Computer networking. RJ45 is typically used in Ethernets or connecting cable modems with Wi-Fi routers. |
Table for RJ45 VS RJ11
Where to use RJ45?
Ethernet networking relies on RJ45 connectors to transmit voice and data media. They were created as a considerably smaller and less expensive alternative to the older hardwired telephone installation methods. The installation is made easier by the plug-and-play manner. RJ45 is more versatile than RJ11 and can be used for Ethernet networking, telephony, factory automation, and other applications. Ethernet cables, modems, PCs, laptops, printers, and other networking devices are often utilized.
How to Identify RJ45 Interface Color Code?
The two most prevalent wiring techniques for terminating twisted-pair cable onto the connector interface are T568A and T568B. When connecting an RJ45 connector to a cable, the two standards describe how the individual eight wires are arranged. For electrical compatibility, these wiring configurations have their color scheme. The T-568B wiring design is the one that is most often utilized.
The color convention changes between T568A and T568B are depicted in the diagram below.


How to Identify Color code
There are two different types of connectivity for the two standards. A straight-through connection is one in which both ends of the patch cords are wired to the same standard. If not, the link is a crossover. A crossover Ethernet cable with a T-568A connector on one end and a T-568B connection on the other is required for some networking applications. When there is no router, hub, or switch accessible, this type of cable is often used for direct computer-to-computer communications.

RJ45 Connector Dimensions Outline

RJ45 Connector Dimensions Outline
RJ45 Connector Manufacturer
HellermannTyton is a leading global manufacturer of systems and solutions which help world-class customers better manage and identify wire, cable, and components. Located in over 34 countries, HellermannTyton offers an integrated approach in the design, manufacturing, and delivery of its products which result in higher quality and lower costs for our customers. HellermannTyton serves the aerospace, automotive, data communication, defense, industrial automation, OEM, rail, solar and wind, truck and heavy equipment and wire processing industries: Bundling and Securing, Application Tools, Routing, Protection and Insulation, and Identification
Datasheet PDF
- Datasheets :
Is RJ45 the same as CAT6?
RJ45 is a connector, and CAT6 is a Cable, where both are used for the Ethernet network. RJ45 comes up with eight pins- four apparent colors and the other four in striped, where four only work for Ethernet. CAT6 has six pins in different colors, including those that connect Ethernet networking.
What are the differences between RJ45 and RJ11?
RJ45 connectors commonly connect to Cat5 and Cat6 cables, while RJ11 simply connects to a telephone cable. RJ45 can connect to various devices in a copper cable network such as switches, cables, computers, routers, and so on. Switches with RJ11 connectors comprise mainly two sockets for a 2-line telephone system.
Is Cat5 and RJ45 the same?
RJ45 is an electrical connecting standard that specifies the connector and how the wires are organized at the cable's end, whereas CAT5 is an Ethernet cable standard.
Is RJ45 and Ethernet the same?
RJ45 connectors are commonly seen with Ethernet network cables. Ethernet cables with RJ45 connectors are also called RJ45 cables. These RJ45 cables feature a small plastic plug on each end, and the plugs are inserted into RJ45 jacks of Ethernet devices.
What is the most common wiring technique for terminating twisted-pair cable onto the connector interface?
RJ45 Interface Color Code
What are the two most common wiring techniques for terminating twisted-pair cable onto the connector interface?
T568A and T568B
What is RJ45 an abbreviation for?
Registered Jack-45
What is the RJ45 connector?
An eight-pin standard interface
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