1731100018 Connectors, Interconnects

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Application Field and Working Principle of D-Sub, D-Shaped Connectors - Backshells, Hoods

D-Sub connectors, commonly referred to as D-Shaped connectors, are as the name implies, shaped and sized like the letter D. They provide reliable connection of signals in a variety of environments and are found in a range of higher end products such as computer systems, medical equipment and industrial applications. D-Sub connectors are typically used in the communication, computer and industrial markets. Because of their wide range of applications, D-Sub connectors need to be of sound construction with proper shielding in order to prevent unwanted electromagnetic interference (EMI) from occurring.

Backshells are essentially protective housings that are fitted around the connectors to provide physical and electrical protection. The backshell is designed to mate in such a way that it supplies the same degree of protection to the internal components as it does to the external environment. These protection elements are designed in such a way that they provide the necessary grounding, sealing and shielding for the connectors.

Hoods are the protective layer which the cables pass through when they are connected to a connector. The hood protects the cables from being damaged or contaminated. It also prevents electromagnetic interference (EMI) from occurring. Hoods come in two styles - crimping style and screw-on style. Crimping style hoods are installed using a crimping tool and screw-on hoods are installed using a screwdriver.

When a D-Sub connector with backshell and hood is in use, the internal components are shielded from outside electrical and environmental interference. This interference can degrade the performance of the system. Additionally, the shielding of the internal components protect them from being damaged due to excessive vibration or physical shocks.

D-Sub connectors typically come in two sizes - 9 and 15 pin varieties. The 9-pin variety is the most commonly used, while the 15-pin variety is used for specialized applications. Both varieties use a standard 3.5mm pitch size and have polarization to ensure that the connections are properly produced. The mating of the two connectors requires a certain pressure in order for the collar of the connector to physically connect to the backshell.

Overall, D-Sub, D-Shaped Connectors - Backshells, Hoods are versatile and reliable connectors that are used in a variety of applications. They offer a robust and reliable connection and they’re easy to install and maintain. Moreover, the backshell and hood components provide the necessary reinforcement and protection which ensures a strong and secure connection. With this, the need for field maintenance is minimized.

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