What should I pay attention to when purchasing sma RF connectors?

The sma connector belongs to a kind of RF connector, in the choice of sma connector products, the purchaser should pay attention to what. Blind procurement will only make the procurement work buried hidden danger, a series of unimaginable problems, so in the procurement of good points to note, so what exactly procurement sma RF connectors should pay attention to it? The following Huicheng yuan electronic connector company for you to introduce some of the considerations for the procurement of sma RF connectors.

Purchase of sma RF connectors, need to take into account the interface mechanism type, electrical performance, mounting methods, termination forms, materials and plating five aspects, as follows: 1, the interface mechanism type connector connection mechanism is not only to provide convenient and fast connection or separation of coaxial transmission lines, the key is to provide stable electrical properties and environmental protection devices, when the use of the occasion does not have enough space to rotate the connection nut, should choose a non-twisting type connection mechanism. When there is not enough space to rotate the connecting nut in the application, the non-twisting connecting mechanism should be selected. In addition for the frame connector, non-twisting type connection mechanism is also very useful, 2, electrical performance a. Characteristic impedance: connectors should be matched with the transmission system and cable impedance, otherwise it will lead to a decline in the performance of the system; b. Withstand Voltage: connector higher voltage withstand value should be in line with the system to use the withstand voltage requirements; in general, if it is a wide-bandwidth applications, to sacrifice some of the favorable broadband Impedance matching characteristics to obtain the required high-voltage rating. c. Higher efficiency. 3, cable mounting methods and cable types a. Cable connection: connector cable mounting methods there are two kinds of: a welded center conductor, combing braided conductor standard elasticity method is still common, especially suitable for no special installation tools occasions, and facilitate on-site maintenance. Two. Welding center conductor, crimping braided layer of the clamping method. Because the crimping method is highly efficient. Termination performance is reliable, and good consistency, has become today's common method. b. Cable type: should be used according to the characteristics of various types of cables (such as flexible cables, semi-rigid cables, wrinkled conductor-insulated cables, foam-insulated cables) to select the appropriate connector, the general outer diameter of the small cable with small connectors to match. 4, termination form connectors can be used for RF coaxial cables, printed wiring boards, frames drawer type 5, materials and plating shell and inner conductor is mainly brass, beryllium copper, tin bronze, insulation materials are mainly tetrafluoroethylene. The center conductor is generally coated with silver or gold plating, and the shell is plated with nickel or silver. sma, smb, ssmb, smc outer conductors are all gold plated. RF coaxial connectors are used to transmit RF energy in the frequency range up to 18 GHz or higher. The basic structure includes: positive and negative neutral contacts, outside the interface material, the outermost is the contact, the outside part of the play as the cable outside the shield as the same function: both the transmission of signals, shielding and grounding.

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