142289

Coaxial Connectors (RF)

Coaxial connectors, otherwise known as RF connectors, are components used to join one piece of coaxial cable to another, or to other types of connection elements. These connectors are used to acquire or send analog or digital signals from radiofrequency. One important property of RF connectors is to maintain the shielding that the coaxial cable provides.

142289 application field and working principle

The number 142289 in this context is the standard for the mechanical key position to type N coaxial connectors. This type of connector is commonly used in radiofrequency applications, with a frequency range of DC to 11 GHz. It features low loss, 50 Ohm impedance, and low VSWR characteristics.

A Type N connector consists of an inner contact, an outer contact, and a dielectric housing. The inner contact is typically machined brass, which is plated with either silver or nickel for enhanced corrosion protection. The outer contact is nickel or silver-plated brass with an insulating sleeve. The dielectric housing encases the inner and outer contacts, usually made of UL-94V-0 thermoplastic, but sometimes die-cast versions are used. The Type N connector also features a threaded coupling nut, which is used to join the two mating halves.

The main function of the Type N connector is to provide a durable and reliable connection between two pieces of coaxial cable, or between two devices. These connectors can also provide a waterproof or dust-proof seal within harsh environment. The threaded design is also beneficial for applications where a secure electrical connection between two pieces of coaxial cable is required.

One important feature of the Type N connector is its high accuracy retention of the transmitted signal. The inner and outer contacts are designed to tightly grip the center conductor of the coaxial cable, which provides a low-impedance path and ensures good electrical performance. The contacts are also designed to ensure that the shield of the cable is securely held and that it retains its shielding coverage.

The Type N connector is also known for its robust construction, with its dielectric housing and stainless steel coupling nut. The connector is suited for indoor, outdoor, and even underground applications when the environment requires moisture resistance. It is also a popular choice for applications that need a secure connection between two pieces of coaxial cable or between two components.

The Type N connector is well-suited for a wide range of applications that require radiofrequency transmission, such as for HF, VHF, and UHF radiofrequency applications. They are especially popular for antenna connections, distribution systems, like radio-based systems, scientific applications, satellites, radar systems, and test instruments.