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Rectangular connectors comprise a class of electrical connectors which are designed to form a mating connection between the connectors in an electrical system. These connectors are typically used in applications such as electronic devices, computer systems, and telecommunications systems. The rectangular design makes them ideal for space saving installations where space constraints are an issue. The main components of rectangular connectors are the contact, housing, shell, and cable assembly. The contact is what actually makes the electrical connection between the two connectors. The housing provides mechanical support and stability and is often molded to the shape of the connector. The shell, or metal frame, houses the contact and provides protection against environmental factors such as dust, dirt, and moisture. Finally, the cable assembly provides the electrical link between the two connectors, as well as the necessary strain relief for the cable.Rectangular connectors come in two main types: arrays and edge connectors. Array connectors are characterized by a row of pins extending out from the rectangle. These pins typically connect to a single circuit, making them suitable for low-voltage applications such as handheld electronics. Edge connectors are similar in design to array connectors, except that they have fewer pins located on the edges of the rectangle. These connectors are better suited for power and signal applications as they can accommodate a higher current rating.Rectangular connectors are also used to form board-to-board connections. These connections are ideal for high-speed communication and can be used in a variety of applications, such as between the processor and memory in a computer system. The most popular type of board-to-board connectors are known as mezzanine connectors, which are characterized by a series of connectors extending from the edges of the device. These connectors use either two or four pins and can form a high-speed connection between multiple boards.Finally, it is important to consider the working principle of rectangle connectors. Essentially, the connection is formed when the two connectors are mated and the contacts make an electrical connection. This electrical connection can then be used for power or signal transfer. However, it is important to note that in some cases where pins are used, gold plating may be required in order to make a reliable connection.In summary, rectangular connectors represent a class of electrical connectors which are used in a variety of applications. There are two main types of rectangular connectors: arrays and edge connectors. In addition, board-to-board connections can be formed using mezzanine connectors. The working principle of rectangular connectors revolves around making an electrical connection when the two connector halves are engaged. Gold plating may be needed in certain applications in order to provide a reliable connection.

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