Simple introduction of SMA RF connector

         SMARF ConnectorAs an important electrical connection component, it plays an important role in various electronic equipment, instruments and electronic information systems. After decades of development, RF coaxial connectors have formed an independent and complete professional system and become an important part of the connector family. The rapid development of the domestic information industry has strongly driven the continuous growth of the RF connector market.

In addition to the pursuit of miniaturization and high frequency of these two key technology projects, RF coaxial connector manufacturers are also in the product's multi-function and reliability of continuous improvement. Now the RF connector in addition to the role of signal connection, but also has the function of processing signals, such as filtering, phase adjustment, mixing, attenuation, detection, limiting and so on. In addition, low standing wave, low loss, large capacity, high power and ease of installation have also become the goals of manufacturers.“With the change of the production process, stamping technology has now appeared. In the past, it was turned, but now it is formed by stamping at one time, so that the volume can be made smaller and the height of the entire connector is less2,3A millimeter, now some coaxial connectors have been made as small as sesame.

        SMABasic parameters of the connector:

Insulation resistance refers to the application of voltage to the insulating part of the connector,As a result, a leakage current is generated in or on the surface of the insulating portion to exhibit a resistance value. It is mainly affected by insulating materials,Temperature,Humidity,defacement and other factors. The insulation resistance value provided on the connector sample is generally the index value under standard atmospheric conditions.,Under certain environmental conditions,The insulation resistance value will decrease to an unnecessary degree.

• Security parameters

Insulation resistance refers to the application of voltage to the insulating part of the connector,As a result, a leakage current is generated in or on the surface of the insulating portion to exhibit a resistance value. It is mainly affected by insulating materials,Temperature,Humidity,defacement and other factors. The insulation resistance value provided on the connector sample is generally the index value under standard atmospheric conditions.,Under certain environmental conditions,The insulation resistance value will decrease to an unnecessary degree. Also pay attention to the test voltage value of the insulation resistance. According to insulation resistance(MΩ)=Voltage applied to the insulator(V)/leakage current(ΜA)Apply different voltages,There are no results. In the test of the connector,The applied voltage is generally10V,100V,500VThird gear.

• Withstand voltage

Withstand voltage is between the mutually insulated parts of the contact pair or between the insulated parts and the ground,The critical voltage that can withstand higher than the rated voltage without breakdown within a specified period of time. It is mainly affected by contact pair spacing and creepage distance and geometry,Insulator material and ambient temperature and humidity,Effect of atmospheric pressure.

• Combustibility

Any connector cannot work without current,There is a risk of fire. Therefore, the connector is not only required to prevent ignition,It is also required that in the event of ignition and fire,It can self-destructed in a short time. In the selection should pay attention to choose the use of flame retardant type,Electrical connectors of self-extinguishing insulating material.

SMATerminating Method of RF Connector

1.Wiring type

Wiring is divided into wire and crimp connectors. The welding wire type is to weld the center conductor and the cable shielding layer. Crimping type is to crimp the center conductor and cable shielding layer, and the pressing type has good efficiency and high performance. The wire bonding type is stable and reliable. Generally, flexible cables are mostly pressed and pressed, and semi-flexible cables and semi-steel cables are mostly welded.

2.connectedPCB(printed circuit board)

When the connector is to be connected toPCBWhen connected, it is mostly plug-in type.(Through Hole)or patch(SMT). for easy tin, andPCBThe connecting metal is mostly gold-plated or tin-plated.

3.Panel

Panel connectors are mostly installed on the chassis to connect internal and external devices. The flange type is fixed by drilling on the connector body panel. There is also a screw on the connector body, fixed with the screw. Such connectors often also require a waterproof function.

SMAThe development trend of RF connectors will have the following characteristics:

1,SMAMiniaturization of RF connectors: With the miniaturization of the whole system,RFThe size of the connector is getting smaller and smaller, suchSSMB,MMCXSuch as series, the volume is very small.

2,SMAHigh Frequency of RF Connectors: USAHPAs early as a few years ago has been launched frequency has reached110GHzofRFConnectors. The frequency of use of domestic general-purpose products shall not exceed40GHz. The frequency of use of flexible cables does not exceed10GHz, half rigid cable does not exceed20GHz.

3,SMAMulti-function of RF connectors: In addition to the role of a bridge, it also has the function of processing signals, such as filtering, phase adjustment, mixing, attenuation, detection, limiting, etc.

4Low standing wave, low loss: to meet the needs of weapon systems and precision measurement.

5,SMALarge capacity and high power of RF connectors: large capacity and high power are mainly adapted to the development needs of the information superhighway.

6Surface mount: mainly adaptSMTTechnology(surface mount technology)development needs, and is conducive to simplifying the wiring structure design of multilayer printed boards.

Shenzhen Philharmonic Electronics Co., Ltd.YesProductionRF coaxial connectors, RF cable components of science and technology enterprises, set design, production and sales as one, with first-class design and engineering team.,It is a technology-based manufacturing enterprise with technology as the leading core.

Philharmonic ElectronicsProvideRFRFseries of connectors, from smallMMCX,SMP,MCXWait until the commonly usedSMA,SMB,SMC,BNC,TNCSeries of male or female connectors,Independent research and development and production of miniature high-frequency connectors and high-frequency hybrid connectors,High-speed connection cable assembly (High speed cable assemblies), coaxial RF cable assembly (RF coaxial cable assembly), low frequency cable assembly, coaxial RF connector, coaxial RF adapter,18GHz/26.5GHz/40GHzConnector/Adapter/Adapter,18GHz/26.5GHz/40GHzLow-loss cables, etc. These products are mainly used in data storage, network, communications, automotive, medical, aviation, etc., for the military field or data signal transmission.Adra Electronics sincerely expect your call cooperation, the company website www.szadele.com  Contact Manager Li Mobile Phone 13332979910