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What is the difference between RJ45 and RJ12 ?

What is the difference between RJ45 and RJ12  ?


RJ45 is an 8-position connector mainly used for contacts in network wiring. In use, the most commonly used RJ45 connectors are CAT5E or CAT6 cables.

Standardization of connectors provides different classes of performance impact. When RJ45 is equipped with all 8 conductors, different properties can be used in different places.

There is also an RJ 45 JACK whose main function is to provide a connection for data. The 8-position modular connector in the RJ 45 connector can connect any pin, even common structured cabling systems.

RJ12 is a 6-position connector, it has 6 conductors and can be used as a telephone connection. This technology, although still in local use, is a mobile technology that is about to be phased out.

The important thing is that RJ11 and RJ12 use the same connection, only 4 positions compared to RJ11 is the main difference between it and RJ12.

Professional engineers of RJ12 connector manufacturers will explain to you the difference between RJ12 and RJ45 from the two aspects of definition and application, as follows:

1. By definition

The RJ12 connector is a 6-piece connector and its 6 positions and 6 conductors can be used as a telephone line. This technology, while still in place, seems to be a knock-out

It is important to note that RJ11 and RJ 12 use the same switch, the main difference between using only 4 positions for both RJ 11 and using RJ12 in all positions. The type you can rely on, it can be a phone or CAT5 cable.

The RJ45 connector is an 8-position 8 whose role is mainly limited to network wiring contacts. The cables that use 45 RJ connectors are most commonly Cat 5 E or CAT 6 cables.

In terms of application, RJ12 is mainly used for telephone lines, using telephone or cat 5 wiring, and RJ45 is mainly used for network wiring

Premier Cable make a lot of  RJ11, RJ12, RJ45 connectors

D Series wall plate RJ12 Female

D Series wall plate RJ45 Female

RJ12 Panel Mount Extension Cable

Panel Mount Coupler, RJ12 Socket

Panel Mount Ethernet Extension RJ45 Cable

Flanged Panel Mounted RJ45 Coupler cable

You can see the products details from below link ,  

If you need product details, drawings, and samples, you can use below contact info : 

Skype : James198585 

Wechat : 13929497934

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