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D-sub, D-shaped connectors are connectors that have a trapezoidal (D) cross section and were designed for computer peripheral applications. They come in a range of sizes and shapes accommodating a variety of connections and design requirements.

D-sub connectors consist of two parts, a connector body or shells and a mating pin. The shells are metal pieces that snap together and form the main structural component of the connector while the pins are inserted into the connector body and attach the electrical connections. Backshells and hoods are additional components used to protect, secure, and provide strain relief for the D-sub connector.

Applications

D-sub connectors have become popular for mass produced consumer goods due to their low cost and compatibility with many interface and communication standards. Many mass produced items are now available with easy and reliable D-sub connectors such as headphones, video game controllers, and PC mice. In addition, many industrial devices, such as control systems, medical equipment, point of sale systems, and industrial automation use D-sub connectors.

D-sub connectors can be used in a variety of applications such as defense, aerospace, industrial automation, medical, and consumer electronics. Their small form factor makes them ideal for tight spaces, and they are used extensively in PCB assembly and in many industrial machines that require a reliable and durable connection.

Working Principle

D-sub connectors use large metal shells or shells to provide mechanical support and shielding from electrostatic noise. The shells of the connection are made from metal components including an inner frame and an outer shield. The inner frame is made from two pieces of metal that snap together around the pins. The outer shield is made from two pieces of metal that snap together and fits around the inner frame. This shielding helps protect the connection from electrostatic noise, which can interfere with signal transmission.

The pins of the D-sub connectors are inserted into the metal connectors and pressed against the connector to make the electrical connection. The pins are made of a conductive material such as copper or gold and they are usually gold plated to ensure the connection is corrosion resistant. The pins are then soldered in place to ensure an even and reliable connection.

The backshells and hoods of D-sub connectors are made of a resilient plastic material such as nylon or polypropylene. The backshells are designed to provide strain relief for the connection and the hoods provide additional protection from the environment. The backshells and hoods are also designed to provide a customizable look for the connection.

Conclusion

D-sub, D-shaped connectors are versatile solutions for electrical connections in a variety of applications. The shells provide mechanical support and electrostatic shielding, while the pins make the electrical connection. The backshells and hoods provide strain relief, environmental protection, and additional customization. D-sub, D-shaped connectors are reliable, cost-effective solutions for many applications and are being used in an increasingly wider range of electronic products.