RJ45 interface, also known as crystal plug, is a kind of connector of information socket (i.e. communication outlet) in wiring system. It is composed of plug (connector, crystal head) and socket (module). The plug has 8 grooves and 8 contacts. It and socket (RJ45 module) together form a complete connector unit. This kind of connector is widely used to connect the network cable between the LAN and the network equipment of ADSL broadband Internet users. It is called five level wire or twisted pair.
The main factors affecting RJ45 connector pin contact resistance and reliability are as follows:
(1) Connector contact material RJ45 connector technical conditions for plug-in contacts of the same specification made of different materials, different contact resistance assessment indicators are specified. The general specification for quick release environment RJ45 resistant connector gjb101-86 stipulates that the contact resistance of the connector contact with a diameter of 1mm is copper alloy ≤ 5m Ω and ferroalloy ≤ 15m Ω.
(2) The surface vertical pressure of the connector contact surface RJ45 the surface vertical pressure of the connector contact refers to the force generated by the surfaces in contact with each other and perpendicular to the contact surface. With the increase of vertical pressure, the number and area of contact micro points also increase gradually, and the contact micro points transition from elastic deformation to plastic deformation. As the concentrated resistance decreases gradually, the contact resistance decreases. The positive contact pressure mainly depends on the geometry and material properties of the contact.
(3) During the use of the surface cleanliness of the contact, the surface of RJ45 connector contact may be a loose surface film formed by mechanical adhesion and deposition on the contact surface due to dust, oil, etc. this layer of surface film is easy to be embedded in the micro pits of the contact surface due to particulate matter, which reduces the contact area, increases the contact resistance and is extremely unstable. Second, due to the pollution film formed by physical adsorption and chemical adsorption, the surface of the butt contact is mainly chemical adsorption, which is produced with time migration after physical adsorption. Therefore, for some products with high reliability requirements, such as aerospace electrical connectors, there must be clean assembly and production environmental conditions, perfect cleaning process and necessary structural sealing measures. RJ45 connector users must have good storage and operation environmental conditions.
Txga provides RJ45 interface in stock, with various specifications, quick delivery in stock and after-sales of the original factory. Enter txga [product center] to place an order online for convenient purchase.
