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D-sub, D-shaped connectors and contacts are a line of electrical components designed to facilitate the interconnection of electrical components. The shape of the connector is a “D”, and it is mainly used in computers, communications systems and other electronic equipment. The popularity of the D-sub connector is due to its many advantages such as a wide range of choices, high reliability and stable performance, and easy assembly and disassembly.

The D-sub connector family consists of four basic types:

• Male: these connectors are fitted with male pins that are inserted into corresponding female connectors.
• Female: these connectors feature female contacts designed to receive male pins.
• Right angle connector: this type of connector is designed to connect the female and male connectors by means of a right angle.
• Plug: these connectors feature a female contact for the plugging of male pins.

D-sub connectors are also available in a range of sizes. The most commonly used sizes are DA, D, DB, DE, DG, DH and DI. For better performance, they are also offered in various material choices, including copper plating, gold plating, chrome plating, nickel plating, bronze plating and stainless steel plating.

D-sub connectors are specifically designed and manufactured for secure and reliable electrical connections. They are widely used in various electrical and electronic circuits. The working principle of the D-sub connector is simple. When the connector is inserted into its mating connector, the pins of the connector enter the female contacts. The female contact and the metal shield are then firmly connected electrically, thus forming a secure electrical connection.

D-sub connectors are highly resistant to corrosion and can perform efficiently in extreme temperatures and harsh conditions. They are capable of carrying high current and are suitable for applications ranging from telecom and computer systems to Military and Aerospace applications.

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