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D-sub connectors, also called D-shaped connectors, are connectors that have two sides, both of which connect to a central plastic or metal element called a shell. The shape of the connector and surrounding shell give the D-sub its name. The connectors come in many sizes and types, but generally they have two pronged tips that snap into place for easy installation and connection. Backshells, hoods, and other specialized pieces can be purchased separately to provide additional flexibility and customization in your applications.

The main applications for D-sub connectors include both computer and computer-based electronic systems. The connectors are designed to provide a reliable electrical connection between your components and electronic modules, as well as a secure mounting point. The size of the connector and the number of pins are important factors in the compatibility of the connectors with other components and systems.

There are different types of D-sub connectors, depending on how the pins are arranged. For example, a single-row version of the connector has two rows of pins, each row having either up to 15 or up to 25 pins. A double-row connector has two rows of pins, each with up to 25 pins. There are also versions with three rows of pins, and with up to 25 pins per row. The higher number of pins allows for increased flexibility and connection options.

The working principle of D-sub connectors is based on the fact that electric current flows from one tip of the connector to the other. This is done via electrical contact between the two pins and the plastic or metal housing, which allows the current to pass through. The contacts usually have a concentric design, which means that they are arranged in circles that extend outward from the center of the connector. This arrangement helps to ensure that power is transferred evenly and safely through the system.

Backshells and hoods are available to provide extra protection for the internal parts of the connector. Backshells are metal enclosures that are attached to the back of the connector. They provide direct shielding from environmental contaminants and vibrations that could otherwise affect the electrical connections or components. The hoods are a form of external protection, usually made of plastic, and they fit over the connector to provide a secure fit and further protection from environmental elements.

D-sub connectors are used extensively in the communications, military, and aerospace industries, and have been used in a variety of applications, including high-speed signaling, data storage, and communications. They are also commonly used in computers, networking, and digital electronic applications. Because of their small size, they are ideal for use in tight spaces, and they provide reliable electrical connections in environments where other types of connectors may not provide adequate protection.

In summary, D-sub connectors are popular in many different applications, and provide a reliable and secure connection between components. These connectors come in various sizes and configurations, and can be purchased with or without additional protective backshells and hoods. The working principle of D-sub connectors relies on the fact that electric current flows from one pin to the other and that the contacts are arranged in concentric circles. This helps ensure that the connection is reliable and secure.

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