Although the distinction of connector product types is somewhat chaotic, from a technical point of view, there are only two basic ways to distinguish connector product categories: ①According to the shape and structure: round and rectangular (cross-section), ②According to the operating frequency: low frequency and high Frequency (with 3MHz as the boundary).
According to the above distinction, the coaxial connector is classified as a circle, and the printed circuit connector is classified as a rectangle (historically, the printed circuit connector is indeed separated from the rectangular connector), and the prevailing rectangle The cross-section of the connector is trapezoidal, which is approximately rectangular. It is also fundamentally common to distinguish between low frequency and high frequency and the frequency of radio waves using 3MHz as the boundary.
As for other types, many different types can be distinguished by use, device method, special structure, special function, etc., and they often appear in publications and manufacturer's promotional materials, but they are generally just to distinguish a certain feature and use. The basic classification is still Does not exceed the above distinction criteria.
Taking into account the technical development and actual situation of the connector, from its versatility and related technical standards, the connector can be divided into the following categories (subcategories): ① low-frequency circular connector; ② rectangular connector; ③ printed circuit Connector; ④RF connector; ⑤Optical fiber connector.
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