Do you really choose the connector, these precautions are still to be remembered!

A connector is an electromechanical component that connects a conductor (wire) to an appropriate mating component to enable the circuit to be turned on and off. Also known in the country as connectors, plugs and sockets. There are various types of connectors depending on the application object, frequency, power, application environment, and the like. For example, there are aviation plugs, aviation sockets, etc. in aviation, and waterproof connectors, cable connectors, etc., which can be used in life. In today's society, connectors are widely used in military systems such as aerospace, aerospace, and defense.

First, the selection of the connector series is based on the application environment of the required product:

Wireless base station

2. Transmission equipment, switching equipment

3. Backplane, set-top box, network card

The choice of connector family is based on product performance and mechanical requirements such as impedance matching, VSWR, maximum frequency, transmission power matching, and more. A typical application environment can guide you through the various parts of the catalog.

Wireless base station

Wireless base stations need to transmit high-power RF signals, high-speed digital signals, and the like.

The input/output ports of the equipment cabinet are generally N-type and 7/16 type connectors. The embedded RF modules need blind series such as BMA series, DIN series embedded modules (MARCONI) and panel connectors, and input/output modules apply MCX. , surface mount series, panels and cable connectors. Finally, the semi-rigid cable assembly and the flexible cable assembly are used to complete the signal connections of the various parts of the device.

2. Transmission equipment, switching equipment

In today's high-capacity transmission equipment market, such as voice transmission, data transmission, image transmission, Jipin provides a large number of high-performance RF connection products. Includes connectors, cable assemblies, various consumables, from the central office to the user, from the base unit to the set-top box, from 50Ω to 75Ω, using small RF coaxial connectors; such as BNC

Series, TNC series, to ultra-small versions such as MCX, SMA, SMB, SMC and their miniaturized versions SSMA, SSMB, SSMC. Micro, such as MMCX, it provides extremely high mounting density. In the DIN and IEC standard interfaces, the need for high speed annunciator transmission requires a high performance GHz band BNC connector.

Wiring devices are used between the transmission device and the switching device. This requires the use of DDF series connectors.

Digital distribution frame DDF (Digital DistribuTIon

Frames): With the development of communication technology, high-capacity SDH, ATM and other devices are widely used, which requires corresponding development of RF coaxial connectors for their basic components. It requires smaller size, wider frequency band and better performance. Well, the connection is more reliable. Jipin has re-optimized the L9 (Siemens) series and C3 (AT) commonly used in China with its independently developed RF/microwave connector transition compensation CAD system.

&T) series, C5 (NEC) series, C6 (Fujitsu) series, ERI (Ericsson) series and other series connectors. Make it more reliable and better adapt to future high-speed communication requirements.

Kyrgyzstan's C4, SMZ, and CC4 three series of wiring systems developed with reference to international standards use connectors, innovative modular design, smaller size, high frequency of application, and excellent electrical performance.

3. Backplane, network card and set-top box.

In recent years, the coaxial connector market has developed rapidly, and BNC type connectors have occupied a large number of applications in coaxial egress Ethernet applications that provide high-speed paths.

In the lower layers of the communication link, the BNC series connectors are widely used. The BNC series is easy to plug and unplug because of its unique bayonet locking method, making it a large number of applications.

Recently, SMB series connectors have been able to improve the density of connector installations, and because of their excellent performance, both for general commercial applications and for military use, some users have gradually chosen to use the SMB series.

In fact, the same application has a variety of options to choose from, users can choose their own suitable connector according to their needs.

Connection mechanism selection:

The connection mechanism makes it possible to interface the two connectors to each other, depending on the required quality and impedance characteristics of the two interface mating connections, as well as the frequency of operation. The connection mechanism has a large impact on the performance of the connector. Here are five common connection mechanisms.

Screwed Coupling

Mechanism) This connection is connected by a connecting nut. Pay attention to limiting the maximum torque to prevent the nut from slipping. The connectors with threaded connections are available in the following series, SMC,

SMA, TNC, N, 7/16, SSMA, CC4, L9, because the threaded connection is relatively strong, reliable performance; it is mainly used for test equipment, military and telecommunications equipment.

Push-in connection mechanism: (Snap-on Coupling

Mechanism) Push-in connection mechanism is mainly used for connectors with small interface, and its installation density is relatively high. Because this connection mechanism is convenient and easy to use, it is commonly used for connection on printed circuit boards (PCBs).

The push-in connection has a reed for locking, which has the advantage of very quick and convenient insertion. This connection mechanism is mainly used in small connector series such as MMCX, MCX, SMB, SSMB, SMZ series.

Slide-in connection mechanism (Slide-on Coupling

Mechanism) The slide-in connection mechanism is generally used in high-density installations, and its insertion is very easy. This type of connector is mainly used in the board-to-board coaxial connection system. This type of connection is mainly used in small DIN multi-terminal connectors such as BMA, C4, C5, C6, ERI. They are usually modular.

The bayonet coupling mechanism (Bayonet Coupling Mechanism) has a pair of locking slots. The locking mechanism is BNC (Bayonet Navy).

Unique to the Connector).

Bayonet couplings are typically used in applications that require reliable connection and quick insertion, such as test and measurement equipment and military equipment.

Push-Pull Self-Latching has a unique self-locking mechanism.

It is as fast and convenient as a slide-in connection, but it is very reliable. When it is self-locking, even if the cable is pulled, it will not be unlocked. Push-in self-locking is usually done on a small-density connector with high density: 1.0/2.3, 1.6/5.6 series. It plugs in quickly and locks reliably.