Before introducing circular connectors, let us introduce the classification of connectors.
The form and structure of the connectors vary widely. There are various types of connectors with different application objects, frequencies, powers, application environments, etc. With the increasingly diversified structure of connectors, new structures and application fields are constantly emerging, and it is not appropriate to try to use fixed patterns to solve the classification and naming problems. Nevertheless, Shenzhen Business Electronics has summarized some basic classifications for you. Interconnection can be divided into five levels according to the function of internal and external connection of electronic equipment.

  1. Internal connection of chip package
  2. Connection of integrated circuit package pins and printed circuit boards. A typical connector is an integrated circuit socket.
  3. The connection between a printed circuit and a conductor or a printed circuit board. A typical connector is a printed circuit connector.
  4. The connection between the bottom plate and the bottom plate. A typical connector is a cabinet connector.
  5. Device-to-device connection. Typical products are circular connectors.
SC 104 AZ Plug, Fischer Push pull Brass Equivalent Circular Cable Connector

The above division of connector product types is somewhat confusing. Technically, there are only two basic classification methods for connector products:

  1. According to the operating frequency: low frequency and high frequency (divide low frequency and high frequency with a boundary of 3MHz, which is basically the same as the frequency division of radio waves.).
  2. According to the external structure: circular and rectangular (connector cross-sectional shape). For example, coaxial connectors are round, printed circuit connectors are rectangular (historically, printed circuit connectors are actually separated from rectangular connectors to form a category), and popular rectangular connectors have a trapezoidal shape similar to a rectangle Cross section.

As can be seen, circular connectors are the most common of all.
In the broad sense, circular connectors include low-frequency circular connectors, RF coaxial connectors, audio connectors, and the like. Its cylindrical structure has natural firmness and higher strength than any other shape. Most of the plugs and sockets of circular connectors are threaded. The connection terminals can range from two to several hundred. It has the characteristics of small size and high reliability, which can meet the needs of cable connection between electronic equipment.