2890R-06J

Fixed inductors are an indispensable part in power electronics applications, and the 2890R-06J is among the most popular types presently available. It is a moulded surface mount inductor, offering advantages over the conventional through-hole components, such as minimized footprint and more efficient usage of boardspace. The device\'s structure and properties make it ideal for a wide range of applications in power electronics.

Specifications

The 2890R-06J is a low-profile, surface-mount body inductor. It is constructed with magnetically shielded ferrite cores for superior noise elimination. The input parameters of the device are as follows: 2.2µH rated inductance; DC current range of 1.11 A-1.9A; DC resistance of 3.05 mΩ. Other specs include low ESL (equivalent series inductance) value of 1.8 nH, storage temperature range between -25°C and 85°C, operation temperature range between -40°C and 55°C, and rated voltage of 100 mV.

Application Fields

The 2890R-06J is an ideal building block in a range of electronic circuits, such as LED lighting, server and network rail power supplies, and DC-DC conversion in poer supply units. It can also be used in frequency converting units. Its low profile design makes it very convenient to use in spaces with height constraints, such as keyboards and gaming controls. Furthermore, its superior noise-suppression properties make it suitable for use in RF amplifiers, as well as audio and video applications.

Working Principle

The 2890R-06J operates based on Faraday\'s law of induction. Faraday\'s law states that a changing magnetic field produces an electromotive force (EMF) around a closed-loop wire. When the magnetic field is produced inductively by a coil of wire, then electric current will flow around the loop. The amount of current is proportional to the rate of change of the magnetic field, which in turn depends on the number of turns of wire in the coil.

The 2890R-06J has a two-layer ferrite core, with windings of enamelled copper wire that produces the magnetic field. This magnetic field is then inductively coupled to the main winding, creating a voltage and opposition to the current flow. This creates a resistor in the circuit, allowing it to store and release energy. This behavior is ideal for power supply applications, as it prevents excessive flow of current and stores energy during peak requirements.