dc jack power connector

A DC jack power connector is a device that allows electronic devices to be connected to external power sources. It is typically used in electronic devices that are powered by batteries or AC adapters.

The most notable feature of this power jack is its 2.1mm specification, which refers to the inner diameter of the center pin of the jack. This size is a standard in the electronics industry, ensuring compatibility with a vast range of power adapters that feature a corresponding 5.5mm outer diameter and 2.1mm inner diameter plug. The metal body of the jack is typically made from high - quality materials such as brass or aluminum, which are often nickel - plated. The metal construction offers excellent mechanical strength, protecting the internal components from physical damage, impacts, and vibrations.

Designed for panel mounting, this 2.1mm Metal Panel Mount DC Barrel Power Jack has a threaded outer barrel that allows it to be securely fastened through a pre - drilled hole in the panel of an electronic device or enclosure. The threaded design, along with a nut and washer, ensures a stable and reliable installation. Inside the metal body, the jack contains the essential electrical contacts. These contacts are usually made of highly conductive metals, like copper, and may be gold - or silver - plated to reduce contact resistance, prevent oxidation, and enhance electrical conductivity.

The 2.1mm metal panel mount DC power jack is engineered to handle specific DC voltage and current ratings. Common voltage ratings range from 5V to 24V, and it can typically handle currents from a few hundred milliamperes to several amperes, depending on the specific model and design. The low contact resistance of the internal contacts ensures efficient power transfer, minimizing power losses and heat generation during operation. This is crucial for maintaining the stability and performance of the connected electronic device, as excessive heat can lead to component failure and reduced lifespan.

The metal body of the jack also serves as a shield against electromagnetic interference (EMI) and radio - frequency interference (RFI). It helps to block external interfering signals from entering the power supply circuit, protecting the sensitive electronics within the device. At the same time, it contains any electromagnetic emissions generated by the device, ensuring compliance with electromagnetic compatibility (EMC) standards.