The basic properties of the connector can be divided into three broad categories: mechanical, electrical and environmental performance. Another important mechanical properties is the mechanical life of the connector. Mechanical life is actually a durability (durability) indicators. It is based on a mesh, into a loop with specified mesh, separating normal completion of the loop Connector connection features (such as contact resistance) as a basis for evaluation. 1. Mechanical properties in terms of connectivity, plug power is an important mechanical properties. Plug power is divided into insertion force and pullout (pullout, also known as separation), the requirements are different for the two. Maximum insertion force in the relevant standards and minimum separation requirements, suggesting that, from the point of view, insert a smaller force (which has low insertion force LIF, and no insert the ZIF structure), and separation force is too small, you will affect the reliability of the contact. Connector plug power and mechanical life and contacts structure (positive pressure) contact part coating quality (the coefficient of sliding friction) as well as contacts arranged dimensional precision (alignment degrees).
2. Main electrical property of electrical connector including contact resistance, insulation resistance and electric strength.
① contact resistance of electrical connector should be of high quality with low and stable contact resistance. Connector contact resistance range from a few cents to dozens of cents.
② insulation resistance measuring the electrical connector contacts and contacts between shell and insulation performance indicators, their order of magnitude for the hundreds of megohms ranging from thousands of megohms.
③ electric strength or voltage, medium voltage, is the characterization of the connector contacts or contacts between shell and the ability to withstand rated test voltage.
④ other electrical properties.
EMI leakage attenuation is to evaluate the electromagnetic interference shielding effectiveness of connector, EMI leakage attenuation is to evaluate the electromagnetic interference shielding effectiveness of connector, usually in the 100MHz~10GHz frequency range testing.
RF coaxial connectors, and characteristic impedance, insertion loss, reflection coefficient, voltage standing wave ratio (VSWR) electrical indicators. Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signal, there has been a new type of connector signal connectors, accordingly, in terms of electrical performance, apart from the characteristic impedance, and there have been new electrical indicator, such as crosstalk (crosstalk), # transmission delay (delay), delay (skew).