403-30-15-119-459

Introduction to D-Sub, D-Shaped Connectors - Contacts

D-sub connectors, also known as D-shaped connectors, are very common and versatile connectors used for electronic equipment. They have several distinct characteristics which make them a favorite among electrical engineers and designers.

The connector itself is shaped like a letter D, and the two terminals of the connector are fixed on the two sides of the D. D-sub connectors come in various sizes and shapes, with different numbers of pins and sockets. The number of pins and sockets can range from one to twenty, with two being the most common. The contacts in a D-sub are arranged in two rows, with one row containing the receiving terminals and the other containing the transmitting terminals. This arrangement ensures that the signals are transmitted correctly and accurately.

The pin numbers of D-sub connectors are usually encoded in the following format: 403-30-15-119-459. This three-part numbering system contains the series number (403), contact count (30), contact diameter (15), contact material (119), and contact finish (459).

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

D-sub connectors are most commonly used for video applications, due to their high pin count and ability to handle HD video signals. They are also used in computer systems, test equipment, satellites, and communications systems. The connections are reliable and secure, and the connectors are designed to take advantage of the shielding capabilities of metal chassis. As a result, these connectors are often used in instrumentation and control panels.

D-sub connectors also have the ability to remove or insert contacts without damaging the primary insulation. This allows them to be used in switching applications, such as patch bays, where signals need to be switched from one circuit to another.

The working principle of D-sub connectors is based on the principle of contact compression. When two contacts are inserted into the connector, the pressure from the inserting pin pushes the contact outwards, creating a strong connection. This connection is so strong that it cannot be easily broken. As a result, these connections can be used in harsh environments where high levels of vibration and corrosion are present without risking the connection.

Conclusion

D-sub connectors are one of the most widely used types of connectors due to their versatility and reliability. They are used in many different applications, including video, computers, instrumentation, and communications systems. The number of pins and sockets can range from one to twenty, with two being the most common. Their strong connection and ability to handle HD video signals make them ideal for HD video applications.