Increasingly diverse due to the structure of the connector, the new structure and applications continue to emerge, trying to solve the problem of classification and nomenclature, it has become difficult to adapt to a fixed pattern. Nevertheless, some of the basic classification is still valid.
(1) the level of interconnection
According to the functionality of electronic devices inside and outside connection, interconnection (interconnection) can be divided into five levels. ① chip package is internally connected ② IC package pins and PCB's connection. Typical IC socket connector ③ printed circuit wire or printed the connection of the system board. typical connector to connector for printed circuit connector ④ backplane and backplane connections. typical connector for rackmount connection ⑤ equipment and devices. typical products for circular connectors. ③ and ④ hierarchy have some overlap in the five levels of the connector market, the highest amount of the first ③ and ⑤ the first level of products, the fastest growing is the product of the first ③ hierarchy of2 connector product category.
Connect the division of the Product type although some confusion, but from a technical point of view, the connector product category there are only two basic division of approaches: (1) according to the shape of the structure: circular and rectangular (cross section), ② the operating frequency: low frequency and high frequency (3MHz sector) in accordance with the above division of the coaxial connector is round, printed circuit connector is rectangular (Historically, the printed circuit connector is indeed separated from the rectangular connector out of a class by itself ,), the popular rectangular connector cross-section is a trapezoid, similar to a rectangle. 3MHz for the demarcation of the low and high frequency radio wave frequency division is basically the same the other way by end-use, installation, special structure, special properties can be divided into many different types, and often appear in publications and the manufacturer's promotional materials, but generally only in order to highlight the particular characteristics and uses, the basic classification is still not exceed the above principle of classification. taking into account the connector technology development and actual situation, from its versatility and technical standards, connectors can be divided into the following categories (sub categories): ① The low-frequency circular connector; ② rectangular connector; the ③ printed circuit connector; ④ RF connectors; ⑤ The fiber optic connectors.