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SMA RF connector is a kind of connector for RF transmission. It has the advantages of miniaturization, shockproof, anti-vibration and so on. It is widely used in wireless communications, satellite communications, aerospace and other fields. SMA RF connectors were first introduced by Amphenol in the 1960s. SMA stands for SubMiniature version A, which means that the connector is a miniature A-type connector. SMA connectors are suitable for signal transmission in the frequency range of DC ~ 18 GHz, where DC stands for direct current and GHz stands for gigahertz. The internal structure of the SMA connector is a center conductor and an outer ring conductor, wherein the center conductor is mainly used for transmitting signals, and the ring conductor is used for shielding the signals. The main types and specifications of SMA RF connectors include the following: 1. SMA pin connector SMA pin connector is a basic model of SMA connector, which includes SMA in-line connector and SMA panel mount connector. SMA pin connectors are characterized by easy connection and are commonly used in test instruments and wireless communication equipment. 2. SMA threaded connector SMA threaded connector is a common type of SMA connector, which includes SMA male connector and SMA female connector. SMA threaded connectors are characterized by compact structure and stable performance, which are usually used in satellite communications, aerospace and other fields. 3.SMA Onboard Connectors SMA Onboard Connectors are special SMA connectors that are typically mounted on a PCB board to connect RF signals and antennas. SMA on-board connectors are characterized by compact structure and high reliability, and are commonly used in wireless communication equipment, smart phones and other products. 4. SMA waterproof connector SMA waterproof connector is a special type of SMA connector, which has the characteristics of waterproof, dustproof and anti-corrosion. The characteristic of SMA waterproof connector is that the shell material is usually made of high-quality stainless steel or titanium alloy, which can withstand all kinds of harsh environments. 5. SMA coaxial connector SMA coaxial connector is a special type of SMA connector, which is a coaxial connector mainly used for cable and antenna connection. The characteristic of SMA coaxial connector is that it usually consists of two connector heads, which has good shielding performance and anti-interference performance. In summary, the SMA RF connector is a very common RF connector.
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