RLB0812-221KL

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Fixed inductors, or more simply referred to as coils, are electronic components that store energy in an electro-magnetic field created by the electric current that flows through them. They are commonly used to filter out unwanted signals, to provide an AC choke, or to define the frequency of oscillation or radio-frequency applications. A fixed inductor is usually built using a ferromagnetic core, as it will concentrate the magnetic flux. Its core is then usually wrapped in a coil of insulated copper wire. The energy stored in a fixed inductor is determined by the amount of coil turns and also the core material.
RLB0812-221KL is a fixed inductor used in many applications such as DC-DC converters, LED drivers, chokes and filters for personal computers, set-top boxes and servers. It features an inductance of 220uH and ±10% tolerance. It can operate within a wide temperature range from -40°C to +150°C and it is a miniaturized designed component with dimensions of 14.2mm x 7.8mm x 8.7mm. RLB0812-221KL is a high-temperature grade inductor, which is ideal for automotive applications.
The working principle of the RLB0812-221KL fixed inductor is based on Faraday’s law of induction, which states that “A changing magnetic field will generate a current in a wire”. This is the fundamental principle of how an inductor works, the current flowing through the coils causes an electric field to be created around the inductor which in turn causes a magnetic field. The magnetic field then collapses and a voltage is induced in the inductor, which is proportional to the rate of change of the current flowing through it. This process continues and the inductor stores energy in its magnetic field.
The RLB0812-221KL fixed inductor is usually used in applications where it is essential to filter out noise or oscillate a signal at a specific frequency. It also provides a strong and stable DC choke, which prevents the current from flowing through the circuit, and in some cases it can be used to slow down the rise time of an AC signal or reduce the transient peaks of a switching waveform. It can also be used to reduce interference from other sources such as electromagnetic interference (EMI). Furthermore, the RLB0812-221KL can also be used in high-volume consumer applications such as car stereo systems, entertainment systems and other electronic devices.

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