Do you know the performance selection of RF Coaxial Connectors?

When purchasing MMCX Connector, not only should you care about the price, but more importantly, you should consider the basic performance of the connector: mechanical, electrical, and environmental performance. Another important mechanical property is the mechanical life of the connector. Mechanical life is actually an index of durability, which is called mechanical operation in the national standard GB5095. It takes one insertion and one extraction as a cycle, and judges whether the connector can normally complete its connection function after a specified insertion and removal cycle.

1. Mechanical properties In terms of connection function, the insertion force is an important mechanical property. The requirements for insertion force are divided into the insertion force and extraction force. In the relevant standards, there are provisions for maximum insertion force and minimum separation force, which indicates that from the perspective of use, the insertion force is small, and if the separation force is too small, it will affect the reliability of the contact. The insertion force and mechanical life of the connector are related to the quality of the plating on the contact part of the contact structure and the accuracy of the contact arrangement dimension. The processing methods of various components in the manufacturing process determine the mechanical and electrical properties of the RF connector. Considering the mechanical properties, the quantity and scale of production should also be considered. It is important to study the reasons why certain performance is not met, and this analysis helps to avoid the next error.

MMCX Female Coaxial Connector

On the other hand, the smaller the MMCX Female Coaxial Connector, the more difficult it is to manufacture, the higher the manufacturing cost, and the worse the accuracy and error. In future industrial applications, the demand for small, excellent, and inexpensive electronic components will continue to grow.

2. Electrical performance The main electrical properties of a connector include contact resistance, insulation resistance, and electrical strength. For RF coaxial connectors, there are also electrical indicators such as characteristic impedance, insertion loss, reflection coefficient, and voltage standing wave ratio (VSWR). Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signals, a new type of connector, namely a high-speed signal connector, has appeared. Correspondingly, in terms of electrical performance, in addition to characteristic impedance, some new electrical indicators have also appeared. , Such as crosstalk, transmission delay, time delay, etc.

3. Environmental performance Common environmental properties include temperature, humidity, salt spray, vibration, and shock.

Development trend:

1. Miniaturization: With the miniaturization of the whole system, the volume of RF connectors is getting smaller and smaller, such as SSMB, MMCX and other series, the volume is very small.

2. High frequency: HP has launched RF connectors with a frequency of 110GHz as early as a few years ago. The frequency of domestic common products does not exceed 40GHz. Flexible cable use frequency does not exceed 10GHz, semi-rigid cable does not exceed 20GHz.

3. Multi-function: In addition to functioning as a bridge, it also has functions for processing signals, such as filtering, phase adjustment, frequency mixing, attenuation, detection, and amplitude limiting.

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

5. Large capacity and high power: Large capacity and high power are mainly adapted to the development needs of the information superhighway.

6. Surface mount: It mainly meets the development needs of SMT technology and is helpful for simplifying the wiring structure design of multilayer printed boards.

We are RF Coaxial Connector Factory, welcome to consult.