What factors affect the resistance performance of RJ45 connectors?

I. What are the factors affecting the resistance performance of the RJ45 connector? (1) touching the surface of the appearance of the straight pressure RJ45 connector touching parts of the appearance of the straight pressure refers to the appearance of the mutual touch onset and straight in the touching appearance of the force. With the increase in direct pressure, touch the number of micropoints and the area also gradually increased, together with the touch micropoints from elastic deformation transition to plastic deformation. Because of the gathering resistance gradually decreases, and the touch resistance decreases. Touch positive pressure depends primarily on the geometry of the touching parts and the function of the material. (2) touch parts material RJ45 connector technical conditions for different raw materials manufactured by the same standard insertion and mating touch parts, the rules are not the same touch resistance check target. Rapid separation of environmental RJ45 network connector general standard GJB101-86 rules, the diameter of 1mm mating touch parts touch resistance, copper alloy ≤ 5mΩ, ferroalloy ≤ 15mΩ. (3) the application of voltage RJ45 connector application voltage reaches a certain threshold, will make the touch parts of the membrane layer is broken, and make the touch resistance decreased rapidly. But because the thermal effect accelerates the chemical reaction in the region adjacent to the membrane layer, the membrane layer has a certain corrective effect. So the resistance value appears nonlinear. In the vicinity of the threshold voltage, small fluctuations in the voltage drop will cause the current to change within a range of perhaps twenty or tens of times. So that the touch resistance has changed a lot, do not understand this situation will be in the test and the use of touch parts of the error. (4) the appearance of the shape of the appearance of the shape of the design and the state of the environment, touching the appearance of the parts may be due to dust, rosin, oil, etc. in the contact point of the appearance of the mechanical adhesion of the accumulation of the more lax surface film, this layer of the surface film because of particulate matter easily embedded in the touch of the appearance of the microscopic pit, so that the touching area is reduced, the touch resistance increases, and is extremely unstable. Secondly, because of physical adsorption and chemical adsorption of the pollution film, the metal appearance is the primary chemical adsorption, it is in the physical adsorption with the electronic relocation and seizure. Therefore, some of the high reliability requirements of the goods, such as aerospace electrical connectors must have a clean installation and production environment conditions, improve the cleaning technology and the necessary construction sealing methods, RJ45 network connectors must be used to have a good storage and use of the operating environment conditions.

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