DE-9F is a type of electrical connector, specifically a 9 – pin female D – subminiature connector3. The following is a detailed introduction:
Related Cables and Adapters: There are various cables and adapters related to DE – 9F, such as DB – 25 serial/COM port male to DE – 9F female connectors, which are used to connect devices with different interfaces to achieve signal transmission.
Basic Characteristics3: The “DE” in DE – 9F represents the D – subminiature series, and “9” indicates that it has 9 pins, with “F” standing for female. It has a smaller shell size, and the pins are in the form of holes, which are used to mate with the male connectors of the corresponding specifications.
Technical Parameters1: Usually, its rated load is 0.5A 30V DC, the contact resistance is at most 30 mΩ, the insulation resistance is at least 100 MΩ under 500V DC, and it can withstand a dielectric voltage of 500V AC for at least 1 minute. The insertion force is at most 0.75 lbs, and the service life can reach 5000 times, with an operating temperature range of – 40 °C to + 70 °C.
Applications3: It is widely used in RS – 232 serial communication, and many uninterruptible power supply units are equipped with DE – 9F connectors to signal to the connected computer through the RS – 232 interface. In addition, it is also used in some token – ring networks and other computer networks, as well as in computer video output and game controller ports.
Ruigu Electronic 
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