DEF9SII

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D-Sub connectors have become very prevalent due to their versatility in connecting different types of electronic components. The DEF9SII is a D-Sub connector variant that is used when a combination of power, signal, and ground connections are required. It is widely used in a variety of applications, including telecommunications, computer networks, and consumer electronics.

DEF9SII connectors feature a 19-pin (9-pin + 10-pin) dual row design. The 9-pin row is designed for power/ground connections and the 10-pin row is used for signal and ground connections. This makes the DEF9SII suitable for applications that require both power and signal connections, such as computer motherboards, network servers, and other communications gear.

The DEF9SII connector is available in various sizes, depending on the application. They come in 9, 15, and 21 pin configurations and can be connected with either female or male contacts. This makes them highly customizable and can be used in a wide variety of applications.

The DEF9SII connectors are very robust and offer excellent signal integrity performance when mated correctly. They are designed and manufactured to meet industrial standards such as IP54, which make them very reliable in harsh environments. The connectors also feature polarization and keying options, which help to ensure that the mating connectors are not misaligned.

The working principle of DEF9SII connectors is quite simple. When two mated connectors are properly aligned, their contacts make contact and carry an electrical current. The current is then passed through the contacts to the corresponding connections on the receiving device. The connection is then complete, allowing current to flow from one end of the connection to the other.

Overall, the DEF9SII is a very versatile and reliable D-Sub connector variant. It provides reliable performance in a wide range of applications and is suitable for both signal and power connections. This makes them a great choice for many different applications, such as computer motherboards, network servers, and telecommunications.

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