D-SUB is a connector what?What are the main types of D-SUB connectors functions as well as characteristics features electrical performance parameters?

A D-SUB connector is a common type of electronic connector that is typically used in computers, communications equipment, industrial automation, and military equipment. It gets its name from the fact that its shape resembles the letter "D" and usually consists of two or more pins arranged in a row. This connector is widely used in electronic equipment, is one of the important parts of many devices to transmit signals and power.D-SUB connectors are mainly of the following types: 1. D-SUB 9 connector: consists of 9 pins, usually used for RS-232 serial communication interface, MIDI music devices, game controllers, and modems and other equipment.2. D-SUB 15 connector: consists of 15 pins, usually used for devices such as VGA monitors and video controllers.3. D-SUB 25 connector: consists of 25 pins, usually used for SCSI hard disks, printers, and industrial automation devices, etc. The main features and characteristics of the D-SUB connector are as follows: 1. Reliability: D-SUB connectors have excellent reliability for a variety of application environments. 2. Versatility: D-SUB connectors can transmit many types of signals, including digital signals, analog signals, and power supplies.3. High Density: D-SUB connectors can connect multiple pins in a very small space, so they can achieve high-density connections.4. Simple and Reliable: D-SUB connectors are very popular because of their simple structure and easy to install and maintain.5. Anti-jamming: D-SUB connectors have good anti-jamming properties. 6. D-SUB connectors have good anti-interference performance and can work in harsh environments.The electrical performance parameters of D-SUB connectors include:1. Number of pins: The number of pins of D-SUB connectors can vary from 9 to 100, which can be selected according to the specific application requirements.2. Contact impedance: The contact impedance of D-SUB connectors is generally 50 ohms or 75 ohms, which can be adapted to different signal transmission requirements.3. Maximum current: The contact impedance of D-SUB connectors is usually 50 ohms or 75 ohms, which can be adapted to different signal transmission requirements.4. Maximum Current: The maximum current of D-SUB connector can range from 1 to 40 amperes, which can be selected according to the specific application requirements. 4. Maximum Voltage: The maximum voltage of D-SUB connector is generally within 250 volts, which can be adapted to different power transmission requirements. 5. Operating Temperature Range: The operating temperature range of D-SUB connector is generally between -55℃ and 125℃. 6.

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