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                Frequently Asked Questions
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                Connector performance
                Release date:2015-01-06 10:09:17

                The basic performance of the connector can be divided into three categories:mechanical properties, electrical properties and environmental performance. Another important mechanical properties are the life of the mechanical connector. Mechanical life is actually a durability index (durability). It is based on a mesh, separation as a circle, to engage in prescribed, disengage the connector can normally complete theirconnection function cycle (such as contact resistance value) as the basis for evaluation.

                1 Mechanical Properties of connector is connected to the function, force is an important mechanical properties. Force is divided into the insertion and pullout strength (pull-out force also known as separation force), which is different from the former. In the relevant standard has a maximum insertion force and minimumseparation force rules, this shows that the use of perspective, the insertion force to small (and thus have low insertion force LIF and no insertion force ZIF structure),while the separation force if too small, it will affect the contact reliability. Connectorinsertion force and mechanical life and contact structure (positive pressure) the quality of the coating parts in contact (sliding friction coefficient) and contacts arranged size precision (alignment) about.

                The main electrical performance of the 2 connector electrical performance including the contact resistance, insulation resistance and dielectric strength.

                Electric connector contact resistance of high quality should have a low and stable contact resistance. The contact resistance of connector from a few milliohms to tens of millitesla Europe ranging.

                The insulation resistance of the insulation performance indicators to measurebetween the electric connector contact and contact with the shell, the order of numberof megabytes to several Gigabit Europe ranging from europe.

                The dielectric strength or resistance to voltage, medium pressure, is the ability tocharacterize the connector between contact or contact and rated voltage test shelltolerance.

                The other electrical properties.

                Electromagnetic interference leakage attenuation is electromagnetic interference shielding effect evaluation of connector, electromagnetic interference leakageattenuation is electromagnetic interference shielding effect evaluation test connector,generally in the 100MHz~10GHz frequency range.

                The RF coaxial connector, and the characteristic impedance, insertion loss, reflection coefficient, voltage standing Bobbi (VSWR) and other electrical index. Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signal, a new type of connector that high-speed signal connector, thecorresponding, in terms of electrical performance, in addition to the characteristic impedance, there are some new electrical indicators, such as crosstalk (crosstalk),transmission delay (delay), Shi Zhi (skew) etc..

                The environmental performance of 3 common environmental performance includinghigh temperature resistance, humidity resistance, salt spray, vibration and shock etc..

                The temperature at the maximum operating temperature is 200 DEG connector(except minority high temperature special connector), the lowest temperature of -65 DEG C.

                The connector connector when working current to generate heat at the points of contact, resulting in temperature rise, it is generally believed that the working temperature should be equal to the ambient temperature and the contact temperature rise and. In some specifications, clearly defines the maximum temperature connector in the rated working current under admissible L. The wet moisture intrusion will affect the connection H insulation performance, and the corrosion of metal parts. Damp heat test conditions for 90%~95% relative humidity (according to the product specification,up to 98%), +40 + - 20 DEG C temperature, test time according to product regulations, at least 96 hours. Cyclic damp heat test is more severe. The salt fog resistance connector containing moisture and salinity in the work environment, themetal structure, contact surface treatment layer may produce electrochemical corrosion, affect the physical and electrical properties of connector. To evaluate theelectrical connector tolerance of this environment, the provisions of the salt spray test.It is the test box connector hanging in a temperature controlled by regulations, blowing compressed air with sodium chloride solution concentration, the formation of salt spray atmosphere, the exposure time by the product specification, for at least 48hours. The vibration and shock resistant to vibration and shock is an important performance of the electric connector, in the special application environment such asparticularly important in aviation and aerospace, railway and highway transportation, itis an important index of robustness and reliability of electrical contact inspection ofmechanical structure of the electric connector. There are clear provisions in therelevant test methods

                Article Keywords:Connector performance
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