207345-1 Connectors, Interconnects

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D-sub, d-shaped connectors are a type of electrical connectors used for data, power, coaxial and high voltage applications. They have a low profile and are designed for harsh environmental conditions. The female D-subs have a metal base that provides shielding from electromagnetic and radio interference. The male D-subs are designed for durability and mechanical strength.

The backshell, or hood, is designed to fit around the male ends of the D-sub connectors. It provides protection against water, dust and other environmental hazards. The hood is typically made of metal and is designed to be easily removed for service or replacement. An internal gasket is used to provide a seal around the joint between the hood and the connector.

The physical shape of the backshell can vary. Some backshells are straight with smooth sides. Others may have two bends for easier routing of the wires, or to provide additional protection from dirt and dust. Most backshells have a small “loop” which allows the connector to be connected to a retaining cable or another piece of hardware.

The backshells are designed to fit the specific type of connector being used. This means that they must have the same electrical and mounting specifications. For example, standard backshells for D-sub connectors are designed to fit over the panel cutouts. There are also specialized backshells for applications that require a specific size, shape or enclosure.

The working principle of backshells is relatively simple. When the connector is inserted into the female and the hood is placed over the connector, a tight seal is created between the two parts. This seal prevents moisture and other contaminants from entering the connection, which reduces the risk of corrosion and other damage to the internal wires.

The backshells also cushion and protect the wiring from mechanical shock and vibration. In addition, the hoods provide shielding against electromagnetic radiation, which is necessary in many applications. This shielding helps to reduce noise from the outside environment, and also protects against interference from other nearby radio signals.

The backshells and hoods are available in a wide range of sizes and styles, and can also be customized to meet specific applications. They are also available in different materials, such as metal and plastic, and may be painted or plated to match the other components of the connector assembly.

In conclusion, D-sub, d-shaped connectors and their associated backshells and hoods are an invaluable part of any electrical system. The backshells and hoods provide the necessary protection, shielding and durability that an electrical connection needs. They are available in a variety of sizes and materials, and can be customized to meet the needs of any application.

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