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D-Sub Connectors are a family of electrical connectors developed by the Deutsch Automotive Corporation for use in industrial and automotive markets. The D-Sub connector family is composed of two parts, the male and the female, which connect together to form a whole unit. This type of connector is often referred to as a "DELECTRIC" connector because of its electrical properties.

The D-Sub connector family features various types of connectors, including those with and without contact points, and a variety of sizes and shapes. In addition, some connectors are available with contactless connections, and most have solder or crimp connection options available.

The D-Sub family of electrical connectors has many applications, such as connecting communication equipment, computer systems, and data networks. Its use is especially prominent in the automotive industry, where it is used to connect electrical components in running vehicles. It is also used in many scientific, medical, and industrial settings.

The D-Sub family features two types of contacts, which are differentiated by their physical appearance. Type A, the most common, has two rows of contacts and is identified by its two-letter code, “D-Sub”. Type B is usually identified by its three-letter code and has three rows of contacts. Both contact types feature a variety of sizes, ranging from 2 to 20 pins. Single-ended cables are commonly encountered in these connectors, multi-ended cables and rare.

The main advantages of D-sub connectors are their durability and robust construction. They are better suited to harsh environments as they are less sensitive to dust and abrasion than other types of electrical connectors. They are also highly reliable and maintain their contact quality even after repeated cycles of installation and removal.

Despite their strong construction and reliability, many of the higher pin counts types are bulky and heavy. In addition, the wide variety of contact types and sizes can complicate the design process and lead to confusion when selecting the appropriate connector.

D-Sub connectors work according to the principle of a metal-to-metal contact. When two connectors are mated, their contact points, which are usually composed of steel or brass, come into contact with each other. When they are properly aligned and the contact points make contact, an electrical conduction is established, allowing electricity to flow freely between the two components.

The D-Sub connector has become an essential part of many modern electrical systems. Its ability to provide a reliable, durable solution to data and power system applications make it a popular choice for many industries. Its various types and sizes make it well-suited to many different application fields, even in the automotive and medical sectors.

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