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What is an RJ45 Connector?

RJ45 connector is a standard connector, mainly used in Ethernet to connect various network devices, such as computers, routers, switches, etc. It has the characteristics of standardized interfaces, reliable structure, and easy installation, making it a common and cost-effective network connection technology that plays an important role in modern network and communication fields.

RJ45 Connector

Components of RJ45 Connectors

RJ45 connectors typically consist of plastic housing and 8 metal contacts.

Plastic shells are usually made of high-quality PC materials.

The contact points are made of phosphor bronze, and each contact point is nickel plated to ensure its oxidation resistance, and further gold plated to improve data performance. The gold plating thickness is optional, usually available in Fu, 3u, 6u, 30u, and 50u.

In addition, the contact points of RJ45 connector can be 2 or 3 prong contacts , with 2 prong contacts are usually used for multi stranded wires and 3 prong contacts are suggested for multi stranded wires and solid wires. 3 pronged connector crosses the wire through three pins, resulting in a larger connection contact area. Therefore, it is more suitable for high-performance transmission requirements.

RJ45 Connector Contacts

Category of RJ45 Connector

The selection of RJ45 connector depends on the corresponding network cable, which means that the RJ45 connector should have the same grade and performance as the cable to match, ensuring the best performance and compatibility of network applications.

At present, the main categories of RJ45 connectors are as follows:

Category Transmission Frequency Transmission Speed Application
CAT5E 100Mhz 1000Mbps general household and small business environments
CAT6 250Mhz 1000Mbps medium-sized office and enterprise environments
CAT6A 500Mhz 10Gbps large enterprises, high-density environments, and professional applications
CAT7 600Mhz 10Gbps data centers, high-speed and bandwidth intensive applications

RJ45 Connector Types

RJ45 connectors can be classified according to different standards. Next, we will list several common types of RJ45 connectors.

By Shielding Type

Unshielded RJ45 Connector

Unshielded RJ45 connectors, also known as UTP RJ45 connectors, do not have the additional metal housing or shield. They rely entirely on the twisting of the paired wires within the cable to cancel out electromagnetic interference. Although UTP connectors provide less EMI protection compared to STP RJ45 connectors, they are usually more cost-effective and are widely used in standard Ethernet networks.

UTP RJ45 Connector

Shielded RJ45 Connector

Shielded RJ45 connectors have an additional metal shield around the connector. This shielded design helps block external electromagnetic interference, such as electromagnetic radiation from other electronic devices or power sources and provides better protection against EMI, allowing for improved signal transmission and reduced signal loss.

STP RJ45 Connector

By Internal Structure

Non Pass Through RJ45 Connector

Non pass-through Connector is a typical RJ45 connector that can be used in conjunction with most standard crimping tools. During the installation process, the wires cannot directly pass through the bottom of the connector, making the installation relatively complex.

Non Pass Through RJ45 Connector

Pass Through RJ45 Connector

Pass through RJ45 connector allows wires to pass directly through the bottom of the connector, ensuring correct wire sequence and controlling the length of reserved network cables. It provides a simpler installation process and makes it easier to ensure the quality of the connection, but it usually requires specific crimping tools.

Pass Through RJ45 Connector

By Installation Method

Standard RJ45 Connector

Standard RJ45 connector requires the use of professional RJ45 crimping tools during installation, which is more complex than toolless connectors, but can provide higher connection quality and stability.

UTP RJ45 Connector

Toolless RJ45 Connector

Toolless RJ45 connector does not require additional crimping tools. Tool-free design typically includes a snap-on mechanism that allows for a fast and easy installation process, saving time and effort, is suitable for various network requirements for fast wiring and temporary connections.

Toolless RJ45 Connector

Wiring Standard

RJ45 connector is used to connect Ethernet cables, and there are currently two wiring standards for twisted pair cables, T568A and T568B. The two standards define the wiring sequence of 8 wires, with the main difference being the wiring sequence of orange and green wires.

At present, T568B is more widely used in the market, but there is no difference in performance between two standards. As long as the wiring standards at both ends are consistent, communication can proceed normally.

T568A T568B Wiring Standard

How to Crimp a RJ45 Connector

If you are not clear about how to assembly a standard RJ45 connector, Gcabling provides complete installation steps to assist you.

RJ45 Connector Installation

Application of RJ45 Connectors

RJ45 connector, as a standard interface, plays a crucial role in connection performance during network transmission. High-quality RJ45 connectors can ensure low signal loss and minimal interference, achieving high-speed data transmission, and have been widely used in the fields of network and communication.

Application of RJ45 Connectors

Gcabling RJ45 Connector

Gcabling can supply a wide range of RJ45 connectors bulk, here we list some hot-selling products.

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