The main effect of the RJ45 connector

The main effect of the RJ45 connector

2019-01-24 15:37:39


The RJ45 connector is used for the termination of the data cable, and the connection and change of the device and the patch panel module are completed. The RJ45 crystal head is required to have excellent conduction function; the contact trigeminal reed has a gold plating thickness of 50μm, which meets the Category 5 transmission specification and fits the T568A and T568B line sequences; it has functions of preventing looseness, insertion and removal, and self-locking.

The RJ45 connector is a standard adapter in copper cabling that together with the socket (RJ45 module) form a complete adapter unit. The adapters of the two components are connected between the wires to complete the electrical continuity of the wires. It is also an integral part of the jumper of the induction wiring technology product. The RJ45 crystal head is usually connected to the two ends of the twisted pair cable. In the standard induction wiring planning device, this accessory product is generally not listed separately, that is, it is not recommended that the user complete the connection work of the twisted pair and the RJ45 plug.




RJ45 connectors are available in both unshielded and shielded versions. The shielded RJ45 plug is covered with a shielded cladding. The actual shape is the same as that of the unshielded plug. There is also an industrial shielded RJ45 plug specially designed for the factory environment, which is used with the shielding module.

RJ45 connectors often use a non-slip plug jacket for maintenance plugs, anti-slip and easy insertion and removal. In addition, it has a variety of color choices to provide the same color as the embedded icon for proper connection.

Line sequence connection

RJ45 connector


The information module or RJ45 plug and twisted pair are terminated with T568A or T568B. They are supported by TIA/EIA-568-A and TIA/EIA-568-B induction wiring specifications. The RJ45 crystal stylus sequence number should be investigated as follows: the front side of the RJ45 plug (the side with the copper needle) faces toward you, with the copper needle facing up, one end of the connecting cable facing down, and 8 copper from left to right. The needles are numbered sequentially from 1 to 8.



The line order from pin 1 to pin 8 is:

T568A: white one green, green, white one orange, blue, white one blue, orange, white one brown, brown.

T568B: white one orange, orange, white one green, blue, white one blue, green, white one brown, brown.

There is no substantive difference between the two international norms, just the difference in color. It is necessary to ensure that when connecting two RJ45 crystal heads, it is necessary to ensure that: 1 and 2 feet are a pair, 3 and 6 pairs are a winding. Yes, pairs 4 and 5 are a pair, and pairs 7 and 8 are a pair. In the same induction wiring system project, only one connection specification can be selected. TIA/EIA-568-B specifications are generally used in manufacturing wiring, sockets, distribution frames, etc., otherwise, they should be clearly marked.

The cable needs to be terminated with a similar connector. For example, the 5e and 6 type connectors are similar in appearance but different in physical organization. If a Category 5e cable is terminated with a Category 3 specification adapter or distribution panel, the cable channel functionality is reduced to Category 3. Therefore, in order to ensure the functional indicators of the cable, it is necessary for the module adapter to reach the corresponding specifications.

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