208742-1 Connectors, Interconnects

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D-sub, D-shaped connectors, and especially housings, have a wide range of applications, and are used in a wide range of industries, from consumer electronics to medical equipment to aerospace. As one of the most popular and widely used connectors in the world, understanding the application field and working principle of these connectors is essential.

Types of D-Shaped Connectors

D-shaped connectors come in a variety of sizes, configurations, and materials. The most common D-shaped connector is the 208742-1, which is a high-density, shielded D-shaped connector with PC board termination. It has three rows of 28 pins each, with a basic locking mechanism design. In addition to the 208742-1, there are a number of other D-shaped connectors available, such as D-sub connectors with display serial interfaces, high-speed bus interfaces, Ethernet connectors, USB connectors, and even miniaturized and ruggedized connectors.

Applications of D-Shaped Connectors

D-shaped connectors are used in a variety of applications, including in the medical, aerospace, automotive, military, and telecommunications industries. These connectors are frequently used in medical and industrial equipment as well as computer systems. The high-density 208742-1 connectors are designed for high-speed data transmission in applications such as liquid crystal displays, medical imaging systems, and telecommunications equipment. The smaller and more miniaturized connectors are commonly used in military and aerospace applications. Additionally, D-shaped connectors can be used for power and signal transfer in splash-proof enclosures, providing both durability and protection from environmental hazards.

Working Principle of D-Shaped Connectors

D-shaped connectors are designed with two main components: a plug and a receptacle. The plug is inserted into the receptacle, and the two pieces are held together using a locking mechanism. The locking mechanism ensures that the plug and receptacle remain connected during the application. The contacts of the plug are connected to the contacts of the receptacle via a flexible cable, allowing for electrical signals or data to be transferred between the two. The contacts can be made from various materials, such as copper, nickel plated brass, stainless steel, or gold plated contacts, depending on the application. Furthermore, the contact pins can vary in size, from 0.62 mm to 3.96 mm in diameter.

D-shaped connectors are designed with five main functional features: mating, locking, unlocking, grounding, and shielding. Mating is the process by which a plug and receptacle are joined together. Locking prevents the two pieces from being disconnected; the locking mechanism is usually spring or cam-operated. Un-locking frees the plug and receptacle from each other. Grounding ensures that the contacts are properly grounded in order to provide a safe electrical connection. And finally, shielding reduces the amount of electromagnetic interference.

Conclusion

D-shaped connectors, and specifically 208742-1 housings, have a wide range of applications in a variety of industries, from medical to aerospace. They are designed with two main components—a plug and a receptacle—and are held together using a locking mechanism. Contacts are made of various materials, and the contacts’ pins can be different sizes, depending on the application. D-shaped connectors also have five main functional features to provide for a safe and secure electrical transfer: mating, locking, unlocking, grounding, and shielding.

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