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Rectangular connectors - headers, male pins, are commonly used in electronic applications. These connectors are usually composed of two parts, a header and a male pin. The header is the portion containing the contact pins which mate with the male pin. The pin is inserted into a mating hole in the header, creating an electrical connection between the two.

Rectangular connectors are generally divided into four categories: board-to-board connectors, plug-and-play connectors, high-power connectors, and special connectors. Board-to-board connectors are frequently used in a variety of electrical and electronic applications, such as circuit boards, power supplies, and instrumentation systems. They provide a highly reliable connection between two printed circuit boards. Plug-and-play connectors are designed for low-power applications such as computer cables and audio/visual applications. As the name suggests, these connectors allow for quick and easy connection and disconnection of devices. High-power connectors are mainly used to transmit higher voltages or currents compared to other connector types. Special connectors are further divided into specialty connectors such as circular connectors, high-density connectors, and automotive connectors.

The working principle of rectangular connectors is simple. Two mated connectors form an electrical connection by pushing the pins into the mating holes of the female connector. The contact force between the pins and the holes secures the connection. The electrical contact for signal and power applications is formed by bending the pins in a U-shape. The U-shapes on the pins create a stronger bond between the two connectors. This provides a better electrical contact and thus ensuring higher reliability and less corrosion.

Rectangular connectors are also designed for various applications such as computer peripherals, consumer electronics, telecommunications, and industrial automation. With their wide range of uses, they have become an integral part of countless electronic applications. In addition, they are also available in a variety of shapes and sizes, meeting the needs of any device or system.

Rectangular connectors can be further divided into plastic and metal variations. Plastic connectors are the most commonly used connector type due to their low cost and ease of production. Metal connectors on the other hand have better electrical and mechanical properties compared to plastic ones. Metal connectors are typically used in high-current and high-voltage applications.

In conclusion, rectangular connectors are a major component in many electronic systems. They provide quick and reliable connections between two or more components and are available in a number of shapes, sizes, and materials. Their flexibility makes them an integral part of many contemporary electronic applications.

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