RJ45
RJ45 is a type of connector for information outlets(ie,communication terminals) in a cabling system.The connector consists of a connector (connector,crystal) and a socket(module).The connector has 8 slots and 8contacts.RJ is an acronym for Registered Jack,which means”registered outlet”.RJ is an interface to the public telecommunications network under the FCC(Federal Communications Commission Standards and Regulations)and is commonly known as the standard 8-bit modular interface for computer networks.

RJ45 Design Principles
RJ45 is composed of a plug and socket,the connector consisting of these two components connected between the wires,in order to achieve the electrical continuity of the wire.
At the core of the RJ45 module is a modular jack.Gold-plated wires or socket holes maintain a stable and reliable electrical connection to the modular EMI finger.Due to the friction between the EMI and the jack,the electrical contact is further strengthened as the plug is inserted.The jack is designed with an integral locking mechanism so that when the modular plug is inserted ,the maximum pull-out strength can be produced outside the interface of the plug and jack.RJ45 module through the “U”shaped through to connect the twisted pair,locking shrapnel can be fixed on the panel and other information on the RJ45 module outlet.
RJ45 Jack Specification

Common RJ45 non-shielded module is high 2cm,width 2cm,thickness 3cm,plastic anti-high pressure,flame retardant,card can be connected to any M series of modeled panels,brackets or surface mount boxes, and it can be mounted on a standard panel with a 90”(vertical)or 45”angle.
Special process design provides at least 750 times repeated insertion and removal.The module uses the T568-A and T568-B cabling.No matter of the Cat 3,Cat 5 or Cat 5e and Cat 6,its appearance has maintained a fairly consistent.
RJ45 Jack Category
According to RJ45 module installation location,there are embedded,carpet type,desktop and universal four standard.
According to the shielding performance is divided into non-shielded modules and shielded modules.When installing shielded cable systems,the entire link must be shielded,including cables and connectors,all requiring shielded information modules.
According to the whether the modules need to be terminated when the cable is terminated, the information module has a dozen type and a free type information module.Wire-style information module requires a dedicated cable tool to push the twisted-pair wire into the information module wiring slot. Free-link tool design is also a manifestation of the user-friendly design of the module,which eliminates the need for a dedicated tool when terminating the module.
In accordance with the different parts the wiring,which is divided into two kinds of termination in the upper and tail termination,most of the products using the upper termination.
The difference between RJ45 Connector and RJ11 Connector
There will be some RJ11 connectors in the household ADSL Modem,which is slightly than the RJ45,mainly used to connect the phone line.It should be noted that the RJ11 interface is 4 or 6 pints,and the RJ45 is an 8-pin interface,so the RJ45 plug can not be inserted into the RJ11 interface,and the RJ11 plug can not be inserted into the RJ45 interface(though it is achievable on the physical interface)The actual use must be clearly distinguished.
RJ45 Connector Application
RJ45 Connector Are Widely Used In Motherboards,Projector and CD-ROM drive
Such As Protable Navigation,Automotive interior line,Navigation Systems,Car audio,Digital Cameras,LCD TV display panel, Plasma TV Panels,Laptop/desktop,PC/Wireless Card,Network Switches,Mobile telephone,Routers boxes,VOIP Internet Phone,ECG,Development boards,ADSL/VDSL MODEM,Set top box,Mini box,Smart box,Entrance guard.

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