D-Sub, D-Shaped Connectors - Contacts

The 1-745270-1 D-subminiature connector is a type of board-level connector that was originally developed for the military for providing a high-density connection to an isolated control or measurement circuit. It is often used for connecting a variety of external devices, such as audio, video, and USB cables. The applications range from medical equipment to gaming systems, and it is even used in satellite communications.

Design and Construction

The D-subminiature connector\'s design and construction are similar to a standard D-shaped plug-and-socket connector, but with a much smaller profile. The metal contacts are housed in a plastic body, and there are 9 to 37 pins in each connector, depending on the model. The 1-745270-1 has 9 pins arranged in a dual-row configuration with a 9.3mm spacing.

Material and Finish

The 1-745270-1 is available in a variety of materials, including brass, nickel-plated brass, stainless steel, and gold. The contact is typically plated with a 50 micro inch (1.27 micrometre) of gold over a minimum 25 micro inch (0.64 micrometre) nickel underplate. It is also available in tin-plated versions.

Working Principle

The working principle of a D-subminiature connector is relatively simple. In a typical configuration, the female contact is the socket, while the male contact is the plug. When the plug is inserted into the socket, it engages the contacts in each of the contact pins, allowing a connection to be made. This connection can either be for data transfer, grounding, or voltage.

Advantages

The primary advantage of the 1-745270-1 D-subminiature connector is its compact size. It offers a very small footprint, which is ideal for applications that require a small connector with high density connections. Additionally, it offers reliable electrical connections, which makes it suitable for use in a variety of applications. The D-subminiature connector has also proven to be highly durable, making it a popular choice for a wide range of applications.

Disadvantages

The 1-745270-1 D-subminiature connector does have its drawbacks, however. One of the main disadvantages is its lack of environmental protection. It is not typically designed to be able to withstand harsh environments, such as dust, water, or vibration. Additionally, its small size also limits its ability to carry higher levels of current.

Applications

The 1-745270-1 D-subminiature connector is typically used in applications where small size and reliable electrical connections are required. It is commonly used in high-density connection applications, such as for a variety of consumer electronics, medical equipment, and gaming systems. It is also used for satellite communications, industrial motor control, and data transfer between computers.

Conclusion

The 1-745270-1 D-subminiature connector is a type of board-level connector that is designed for a wide range of applications. It is known for its compact size and reliable electrical connections, and it is often used for connecting a variety of external devices, such as audio, video, and USB cables. Despite its drawbacks, such as lack of environmental protection and limited current-carrying capacity, it is still a popular choice for a variety of applications. Therefore, the 1-745270-1 D-subminiature connector is an ideal solution for those seeking a high-density connection in a small package.